Orientation Of Crystallites Research Articles

Transmission electron microscopy investigation of the dislocation structure in a Ti-6Al-4V alloy subjected to an early stage of cyclic deformation

A detailed investigation was conducted of the dislocation structure formed within both the α and β phase of a Ti-6Al-4V alloy subjected to an early stage of cyclic deformation. The cyclic loading-unloading was carried out in tension between applied stress levels of 1100 and 100 MPa, the macroscopic yield stress (σ02) being about 1205 MPa, at a strain rate of 2×10−3 s−1 to 300 cycles, as part of an in-situ synchrotron experiment. The dislocation type, arrangement and density were examined post-mortem using transmission electron microscopy, complemented by the automatic determination of individual crystallite orientations through precession-enhanced nanobeam diffraction. The deformation took place entirely through dislocation glide and no evidence of deformation twinning was found within either of the constituent phases. The dislocation structure within the α phase was fairly similar to that formed during monotonic straining and no presence of periodic planar dislocation networks suggested in the literature was detected. Prismatic and basal slip were the dominant observed deformation modes, based on the calculated Schmid factor and critical resolved shear stress values reported in the literature. The <a>−type dislocations present after straining typically displayed a large screw component, with a majority of them having a pure screw character. There was also limited presence of <c+a> dislocations within the α phase and these were largely of a mixed type. Burgers vectors of the dislocations remaining after deformation within the β phase were also largely associated with the potential slip systems having high Schmid factor values and these dislocations mainly displayed a large screw component.

Study on the Characteristics of Zinc Oxide Nanocolloid Prepared Using Electrical Spark Discharge Method

In this study, zinc oxide (ZnO) nanocolloids (ZnONCs) were prepared in an electrical discharge machine using the electrical spark discharge method. ZnONCs comprising ZnO nanoparticles (ZnONPs) and zinc nanoparticles (ZnNPs) could be successfully prepared using metal electrodes with 99.97%-purity zinc (Zn) wire and deionized water as the dielectric fluid at normal temperature and pressure; chemical substances were not required in the preparation. According to the results of ultraviolet–visible spectroscopy, the ZnONP characteristic peak value was 345 nm. X-ray diffraction results indicated that ZnONCs had both Zn and ZnO crystallite orientations. Transmission electron microscopy results revealed that ZnONPs and ZnNPs exhibited elongated crystals measuring 30–50 nm, a ZnO d-spacing of 0.25 nm, and a Zn d-spacing of 0.21 nm. Raman and photoluminescence imaging results indicated favorable structural quality and crystallinity.

EFFECT OF EXPLOSIVE THERMAL EVAPORATION CONDITIONS ON THE PHASE COMPOSITION, CRYSTALLITE ORIENTATION, ELECTRICAL AND MAGNETIC PROPERTIES OF HETEROEPITAXIAL InSb FILMS ON SEMI-INSULATING GaAs (100)

EFFECT OF EXPLOSIVE THERMAL EVAPORATION CONDITIONS ON THE PHASE COMPOSITION, CRYSTALLITE ORIENTATION, ELECTRICAL AND MAGNETIC PROPERTIES OF HETEROEPITAXIAL InSb FILMS ON SEMI-INSULATING GaAs (100)

Effect of particle size distribution on the structure and mechanical properties in the process of laser powder bed fusion

The paper studies effects of particle size distribution on the structure and mechanical properties of monolithic samples obtained by L-PBF. A powder of 321 austenitic stainless steel of one batch was divided into three fractions 0–20, 20–40, and 0–40 μm. It was established that for narrow fractional powder composition, hardness anisotropy is observed that depends on the building direction, whereas for wide fractional powder composition, hardness anisotropy is practically absent. It was found that the particle size composition of AISI 321 steel powder does not fundamentally affect the morphology of the grain structure. Despite the general preferred orientation of the {101} planes, a weak effect of the powder composition on the crystallites orientation is observed.

Effects of cathode rotation and substrate materials on electrodeposited CoMnP thick films

In this study, rotating-cathode electrodeposition was performed to deposit 30 μm thick CoMnP films on various substrate materials at room temperature. The electrodeposition configuration and parameters realized a constant current efficiency of about 95%, which was under activation control rather than mass-transport control. Compositional analysis indicated that the deposited thick films were Co-rich with a Co content 92–95 wt.%, regardless of deposition parameters. X-ray diffraction revealed that cathode rotation physically altered the preferred orientation of Co crystallites. The texture of Co crystallites changed with the cathode rotational speed from distinct hexagonal close-packed (HCP) (002) to a heterogeneous phase mixture of HCP (110) and face-centered cubic (FCC) (220). The substrate materials physicochemically affected the relationship between rotational speed and microstructural evolution. The microstructural texture changed nonlinearly with the cathode rotational speed when the films were deposited on catalytic substrate materials, suggesting a substantial influence of the substrate activation nature. Due to magnetocrystalline anisotropy, the resultant films exhibited hard magnetic properties while depositing at the optimal cathode rotational speed. Stationary-cathode electrodeposition resulted in rough CoMnP films with Co grains of 8–18 nm and high Mn content. These films exhibited unique in-plane magnetic properties compared with the films deposited with electrolyte agitation. This study is the first to investigate the combined effects of cathode rotational speed and the activation nature of substrates on the growth behavior of electrodeposited Co-rich CoMnP thick films. The results can be extended to electrodeposition of other Co-based alloys, such as CoP, CoNiP, CoWP, CoPtP, and CoNiMnP.

High performance GZO/p-Si heterojunction diodes fabricated by reactive co-sputtering of Zn and GaAs through the control of GZO layer thickness.

The effect of thickness of Ga doped ZnO (GZO) layer on the performance of GZO/p-Si heterojunctions fabricated by reactive co-sputtering of Zn–GaAs target is investigated. GZO films were deposited at 375 °C with 0.5% GaAs area coverage of Zn target and 5% O2 in sputtering atmosphere. X-ray diffraction and X-ray photoelectron spectroscopy show that c-axis orientation of crystallites, Ga/Zn ratio and oxygen related defects depend substantially on the thickness of films. The 200–350 nm thick GZO films display low carrier concentration ∼1017 cm−3, which increases to >1020 cm−3 for thicker films. The diodes fabricated with >500 nm thick GZO layers display non-rectifying behaviour, while those fabricated with 200–350 nm thick GZO layers display nearly ideal rectification with diode factors of 1.5–2.5, along with, turn-on voltage ∼1 V, reverse saturation current ∼10−5 A, barrier height ∼0.4 eV and series resistance ∼200 Ω. The drastically improved diode performance is attributed to small Ga/Zn ratio (∼0.01) and extremely low dopant activation (∼0.3%), owing to diffusion and non-substitutional incorporation of Ga in thin GZO layers, which cause self-adjustment of doping concentration. These factors, together with c-axis orientation and chemisorbed oxygen at grain boundaries, facilitate ideal diode characteristics, not reported earlier for GZO/p-Si heterojunctions.

The two-level elastic-viscoplastic model: analysis of the influence of crystallite orientation distribution in the reference configuration and the complexity of loading on the behavior of polycrystalline materials

Components and structural elements used in modern technology are often exposed to significant loads in wide ranges of high and low temperature and deformation rates, high stresses and loading rates.. All these factors, as well as complex loading schemes that must be considered when designing structures of different sizes - from miniature to large-scale -, put forward increased requirements for the properties of materials. A significant part of the structures used in various industries are made of polycrystalline metals and alloys. The physical and mechanical properties of polycrystalline aggregates in finished products depend on their phase and component composition, meso- and microstructure, including the orientation of crystallites (grains, subgrains), symmetry properties of subgrains, and on the initial (residual) stresses that occur during their manufacturing. Experimenting with full-scale structures requires considerable material and time expenditures, therefore mathematical modeling approaches are applied, especially for designing structures and their manufacturing processes. Mathematical modelling provides an opportunity to describe processes in any materials with this or that degree of accuracy. Constitutive relations (or constitutive models) are the most important element of the mathematical models developed for solving these problems. Currently, the most promising among these models are multilevel models based on the introduction of internal variables and crystal plasticity. When analyzing the elastic-plastic deformation of various products, the isotropic constitutive relations are often used to simplify the analysis of the elastic component of deformations. The present work is devoted to the study of errors arising when the anisotropic elastic properties of crystallites are replaced by the corresponding isotropic properties of the materials with BCC, FCC and HCP lattices for different laws of orientation distribution of crystallites in a polycrystalline aggregate in the reference configuration. Using the two-level model based on the elastic-viscoplastic crystal plasticity, a series of numerical experiments on simple shear loading, sequences of two simple loads and cyclic deformation were performed to analyze the evolution of the stress-strain state and to estimate the residual stresses in crystallites.

Diffraction Peak Broadening Anisotropy of Shock Loaded Uranium

Analysis of angular dependences of the diffraction peak broadening observed in α-uranium in as-received state, after loading by converging spherical shock wave, low-speed uniaxial deformation, and annealing at 850°С has been presented in this work. Broadening anisotropy identical for all the states investigated has been demonstrated. The authors have attempted to explain the phenomena by Young’s modulus anisotropy of uranium or the crystallite orientation relative to the load applied under plastic deformation.

Origin of Mangetotransport Properties in APCVD Deposited Tin Oxide Thin Films.

Transparent conducting oxides (TCO) with high electrical conductivity and at the same time high transparency in the visible spectrum are an important class of materials widely used in many devices requiring a transparent contact such as light-emitting diodes, solar cells and display screens. Since the improvement of electrical conductivity usually leads to degradation of optical transparency, a fine-tuning sample preparation process and a better understanding of the correlation between structural and transport properties is necessary for optimizing the properties of TCO for use in such devices. Here we report a structural and magnetotransport study of tin oxide (SnO2), a well-known and commonly used TCO, prepared by a simple and relatively cheap Atmospheric Pressure Chemical Vapour Deposition (APCVD) method in the form of thin films deposited on soda-lime glass substrates. The thin films were deposited at two different temperatures (which were previously found to be close to optimum for our setup), 590 °C and 610 °C, and with (doped) or without (undoped) the addition of fluorine dopants. Scanning Electron Microscopy (SEM) and Grazing Incidence X-ray Diffraction (GIXRD) revealed the presence of inhomogeneity in the samples, on a bigger scale in form of grains (80–200 nm), and on a smaller scale in form of crystallites (10–25 nm). Charge carrier density and mobility extracted from DC resistivity and Hall effect measurements were in the ranges 1–3 × 1020 cm−3 and 10–20 cm2/Vs, which are typical values for SnO2 films, and show a negligible temperature dependence from room temperature down to −269 °C. Such behaviour is ascribed to grain boundary scattering, with the interior of the grains degenerately doped (i.e., the Fermi level is situated well above the conduction band minimum) and with negligible electrostatic barriers at the grain boundaries (due to high dopant concentration). The observed difference for factor 2 in mobility among the thin-film SnO2 samples most likely arises due to the difference in the preferred orientation of crystallites (texture coefficient).

Orientation patterns of aragonitic crossed-lamellar, fibrous prismatic and myostracal microstructures of modern Glycymeris shells

The shells of the bivalves Glycymeris glycymeris and Glycymeris nummaria are widely used for environmental studies. They consist of aragonite and comprise four different microstructures and textures from outer to inner shell surfaces: crossed-lamellar, myostracal, complex crossed-lamellar and fibrous prismatic. We characterize with SEM, EBSD, laser-confocal microscopy and AFM imaging mineral unit size, morphology and orientation of crystallites in the different microstructural arrangements and at the transition from one microstructure to the other. We also characterize the microstructure and texture of adductor and pedal retractor myostraca and address structural characteristics at the transition from crossed-lamellar to myostracal assemblies. We find that the crossed-lamellar layer has a three-dimensional crystallographic orientational order. Each set of first-order lamellae consists of twinned aragonite; the two sets of first-order lamellae are misoriented to each other by about 30 to 40° while retaining an approximately parallel a-axis; they do not show any particular twin relationship. Myostracal aragonite grows homoepitactically onto the crossed-lamellar aragonite, but is clearly a separate microstructure, with its own crystallite size and morphology. Within adductor and pedal myostraca, prisms increase in size towards inner surfaces. In contrast to the other shell layers, the myostraca form through competitive growth. The complex crossed-lamellar aragonite initially inherits the three-dimensional texture of the crossed-lamellar microstructure, but with growth develops an axial texture, which is transmitted to the underlying fibrous prismatic microstructure. With this work we provide a modern, unaltered, reference for fossil Glycymeris shells to be used for detection of diagenetic overprint in fossil Glycymeris analogs.

Role of substrate on film thickness, structural, compositional and magnetic properties of CoNi alloy thin films by low temperature electrodeposition technique

Impressment of Cobalt and Nickel based alloys in industries for the last few years attracted many researchers due to its significant features of physical, chemical and magnetic properties. The present work focused the structural, compositional, morphological and magnetic properties of Cobalt Nickel alloy thin film growth by one of the chemical methods. Thin films of Cobalt Nickel have been deposited on various substrates by means of low cost galvanostatic electrodeposition technique. Structural investigation showed that the deposited films have face centred cubic structure with orientation of crystallites along (111) plane. The structural parameters such as crystallite size, rms microstrain, dislocation density and stacking fault probability are estimated for the deposited films. Morphological features along with film composition showed that the deposited films have smooth surface with stoichiometry. Magnetic properties such as coercivity, remanence, retentivity was estimated and the results are reported.

New Insights into Osteointegration and Delamination from a Multidisciplinary Investigation of a Failed Hydroxyapatite-Coated Hip Joint Replacement.

Hydroxyapatite (HA) coatings have become very popular in uncemented total hip arthroplasty (THA). Analysis of retrievals and tissue samples from an HA-coated femoral stem, which failed within 14 months after THA, provides exceptional insights into the failure mechanism, as well as the process of osteointegration of such an implant. Methods: Retrievals were photo-documented. Samples were examined by micro-computed tomography, X-ray diffraction (XRD) and embedded in polymethylmethacrylate for histology. Results: The coating had partially delaminated. The sandblasted surface of the stem was partially polished by the delaminated HA coating, indicating failure before revision. In the tissue samples, the HA coating was well integrated by newly formed bone trabeculae. No adverse biological reaction was observed. XRD analysis showed that residues of the HA coating were still present and could clearly be differentiated from the surrounding bone. Preferential orientation of the HA crystallites could be identified within the newly formed bone, representing a potential mechanical weakness induced either by physiologic strain or by the coating. Conclusion: current HA coatings, relatively thick and made of high crystallinity HA, may be prone to delamination, as also seen in our study. Recent efforts have aimed towards thinner (<1 μm) coatings with nanocrystalline HA structures that possibly relate to lower delamination risks. However, the question arises if HA coatings are beneficial since sandblasted non-coated stems offer similar results without the risk of delamination. XRD not only permits differentiation between the HA from the coating and the HA of the ongrown bone, it also provides new insights into the microstructure of this newly formed bone.

Thermo-optic effects mediated self focusing mechanism and optical power limiting studies of ZnO thin films deposited on ITO coated PET substrates by RF magnetron sputtering under continuous wave laser regime

In this work, ZnO thin films are deposited on ITO coated PET substrates employing RF magnetron sputtering technique. The evolution of crystallites orientation on (002) plane with increasing thickness of the films is unveiled from XRD patterns. Further, the appearance of (103) plane in the highest thickness film (183 nm) is attributed to the formation of surface layer during sputtering process. The smooth and homogenous natures of the films are displayed by the interference pattern in transmittance spectra. The presence of defect level emission in the luminescence spectra is ascribed to compressive stress in the films. The exhibition of orange-red emission confirms the excess oxygen in the sputtered films (89 nm and 183 nm). The dominance of thickness on the third-order nonlinear optical parameters is revealed by single beam Z-scan measurements. The lower thickness ZnO film (42 nm) shows an interesting self focusing behavior under closed aperture Z-scan measurements. A transition from self focusing to self defocusing behavior is noticed with increasing thickness values from 42 nm to 183 nm. The self focusing property is attributed to the combination of presence of large dipole moments at the substrate-film interface as result of large energy gap gradients and thermo-optic effects.

Boosting the efficiency of quasi-2D perovskites light-emitting diodes by using encapsulation growth method

The fabrication of perovskite film is crucial for achieving efficient perovskite photoelectric device. Herein, a simple and novel encapsulation growth method was applied to prepare high-quality quasi-2D perovskite films with advantages of compact and uniform morphology, high crystallinity with lower defect density, enhanced photoluminescence quantum yield (PLQY) and optimized multidimensional domain distribution and crystallite orientation for perovskite light-emitting diodes (PeLEDs). The encapsulation growth method was found to decrease the proportion of the low-dimensional (n = 1,2,3) domains while increasing the high-dimensional domains content with randomly-oriented crystals, which simultaneously enhanced the overall energy landscape effect and charges transport within the quasi-2D perovskite films, and the PLQY of the quasi-2D perovskites significantly improved from 9.2% to 60.0%. Finally, an efficient flexible green PeLEDs was obtained with a high luminous efficiency (LE) of 47.1 cd/A, and a luminance brightness of 8300 cd/m 2 , and an efficient sky-blue PeLEDs was also achieved with record EQE of 12.8% by using encapsulation growth method. This encapsulation growth method provides a promising strategy for boosting the efficiency of quasi-2D PeLEDs. • Simple and novel growth method for high-quality quasi-2D perovskite films. • Demonstration of the flexible green PeLEDs. • The record EQE of 12.8% in sky-blue PeLEDs. • Promising strategy for boosting the efficiency in perovskite optoelectronic devices.

Semiconducting to Metallic Electronic Landscapes in Defects‐Controlled 2D π‐d Conjugated Coordination Polymer Thin Films

AbstractTwo‐dimensional coordination polymers (2DCPs) have been predicted to exhibit exotic properties such as superconductivity, topological insulating behavior, catalytic activity, and superior ion transport for energy applications; experimentally, these materials have fallen short of their expectation due to the lack of synthesis protocols that yield continuous, large crystallite domains, and highly ordered thin films with controllable physical and chemical properties. Herein, the fabrication of large‐area, highly ordered 2DCP thin films with large crystallite domains using chemical vapor deposition (CVD) approaches is described. It is demonstrated that defects and the packing motifs of 2DCP thin films may be controlled by adjusting the vapor–vapor and vapor–solid interactions of the metal and organic linker precursors during the CVD fabrication process. Such control allows for the fabrication of defects‐controlled 2DCP thin films that show either semiconducting or metallic behavior. The findings provide the first demonstration of tuning the electrical properties of sub 100 nm‐thick continuous 2DCP thin films by controlling their electronic landscape through defect engineering. As such, it is determined that large‐area, highly ordered 2DCP thin films may undergo a semiconducting to metallic transition that is correlated to changes in morphology, crystalline domain sizes, crystallite orientation, defect interactions, and electronic structure.

Microstructure of combined electroless and galvanic deposits on roll annealed copper foils and copper single crystals

The production of highly flexible printed circuit boards requires copper plating on roll annealed (RA) Cu foils with strong (001) crystallographic orientation, with electroless copper plating followed by galvanic copper plating. Concurrent epitaxial and polycrystalline crystal growth during galvanic plating has to be avoided because it leads to unacceptably rough sample surfaces, with polycrystalline regions protruding. Two electroless plating processes are compared in terms of their interaction with the subsequent galvanic plating step. Plating tests are carried out with RA substrates and (111), (011) and (001) copper single crystals. Crystallite orientation distributions are determined by measuring X-ray diffraction pole figures for the substrates, as well as the substrates with galvanic deposits, electroless deposits and combined electroless and galvanic deposits. One of the electroless processes creates Cu {111} planes parallel to the sample surface, thereby reliably disrupting epitaxy between the substrate surface and the growing galvanic film. Moderate constant stress in the electroless processes enables good mechanical adhesion to the substrate.

Effective Hamiltonian and 1H-14N cross polarization/double cross polarization at fast MAS

In this work we investigate in detail the underlying spin-dynamics associated with 1H-14N double CP experiments under fast MAS, recently demonstrated by Carnevale et al. We employ matrix logarithm and Floquet theory to compute numerically the effective Hamiltonian associated to the time-dependent problem. Certain common features related to construction of effective Hamiltonians by both approaches are discussed. The main observations related to 1H-14N CPMAS/double CP transfer are: (a) various spin terms of the effective Hamiltonian strongly depend on the crystallite orientation; (b) significant CP transfer occurs only when the magnitudes of the effective1H and 14N RF strengths are comparable, and simultaneously all pure 14N terms in the effective Hamiltonian are small, except for the longitudinal and the RF terms; (c) the sign of 14N CPMAS signal follows the sign of 14N effective RF strength; (d) sign of the double CP signal is largely independent of crystallite orientation. We predict and verify matching conditions employing multiples of the spinning frequency or involving different 14N RF strengths. We provide an analytical proof for (d). The proof also provides an estimate for the ratio of 1H-14N and 14N-1H transfer amplitudes which is further substantiated through simulations. In addition, we find that double CP signals include contributions from several single-quantum coherences present after the first CP process. The uneven contribution from different coherences leads to a reversal of signal at very short contact times, a feature noted experimentally by Carnevale et al. The connection between CPMAS transfer and efficient spin-lock is discussed and illustrated. The factors affecting second-order quadrupolar lineshapes in double CP experiment are examined. With a linear ramp of 1H RF amplitude we have observed that significant CP transfer occurs for more crystallite orientations resulting in improved sensitivity.

Dislocation structures representing individual slip systems within the α phase of a Ti–6Al–4V alloy deformed in tension

The current work performed a detailed examination of the dislocation structures associated with individual slip systems within the α phase of a Ti–6Al–4V alloy subjected to tensile deformation as a function of crystallite orientation. Tensile samples were deformed as part of an in-situ synchrotron experiment at a strain rate of 3 × 10−4 s−1 to a strain of about 0.07. The dislocation type, arrangement and density within eighteen randomly selected grains were examined post-mortem using transmission electron microscopy, complemented by the automatic determination of individual crystallite orientations through precession nanodiffraction. The Schmid factor values for all possible hcp slip systems were then calculated for each of the grain orientations and these were allocated to one of the four slip domains, representing prismatic, basal, first-type pyramidal <a> and first-type pyramidal <c+a> slip, on the basis of both the Schmid factor value and dislocation structure character. The deformation took place entirely through dislocation glide and the slip system selection and dislocation densities were governed by the global Schmid factor values. Prismatic slip was a prevalent deformation mode, followed by basal slip. The <a>-type dislocations present after deformation typically possessed a dominant screw component, with those representing prismatic slip typically being of a pure screw type, and displayed a strong tendency to adopt a screw character already during straining. Deformation also caused the formation of <c+a> dislocations, located in the first-type pyramidal planes, that typically occupied entire interiors of the close-to-[0001] oriented grains and were mainly of a mixed character.

Micro-mechanical investigation of (Al50Ti50)N coatings enhanced by ZrN layers in the nanolaminate architecture

A series of nanolaminate (Al50Ti50)N/ZrN coatings with different modulation period (λ) and bias voltage were synthesized by vacuum arc deposition (VA-PVD). The composition, evolution of the microstructure, and mechanical properties were studied during the transition from the basic monolayer (Al50Ti50)N coating to the nanolaminate architecture with a stepwise decrease in the modulation period. XRD and HR-TEM results showed that the binary layer in (Al50Ti50)N/ZrN nanolaminates composed of fcc-(Ti, Al)N phase with the (1 1 1) preferred orientation of crystallite. The isostructurality of fcc-(Ti, Al)N and B1-ZrN lattices contributed local epitaxial grain growth in multilayer nanolaminate. ZrN layers, as the second component of the bilayer, had a highly textured structure with a predominant texture axis (1 1 1). The maximum values of nanohardness of 26.5 GPa and elastic modulus of 287.3 GPa were obtained for the sample with the lowest modulation period of about 15 nm. According to the results of chemical analysis by XPS, we established the oxidized state of all elements of the metal component of the surface layer, such as ZrO, TiON, ZrNO, and the presence of TiN, TiNx, ZrN nitride compounds.

An in-depth investigation of physical properties of Nd doped CdS thin films for optoelectronic applications

The different contents (0 wt.%, 1 wt.%, 3 wt.% and 5 wt.%) of Nd @CdS films were casted using spray pyrolysis deposition procedure. The preferential orientation of crystallites along (002) for all films was noted by XRD profiles. The mean crystalline size (Davg), strain (ɛavg) and dislocation density (δavg) have also been evaluated using XRD results and discussed. The spherical shape morphology of nanoscale particles of Nd@CdS films were analyzed by FE-SEM, exhibits the increased grain sizes with Nd doping concentration. The optical band gaps (2.4–2.36 eV) were found to be decreased with increasing Nd doping content upto (3 wt.%) and increased at 5 wt.% The PL profile displays a stout intensity peak observed at 532 nm and week emission band at 638 nm. The dielectric constant, loss and loss tangent of pristine and Nd@CdS thin films were investigated by dielectric measurements. The optimum values of non-linear refractive index 1.06 × 10−10, 4.41 × 10−11, 3.44 × 10−11 and 1.85 × 10−10 were observed for Nd content varies from pristine to 5 wt.% respectively. Furthermore, optimum non-linear susceptibility values 7.31 × 10−12, 1.079 × 10−12, 4.53 × 10−13 and 1.36 × 10−11 were observed for 0, 1, 3 and 5 wt.% of Nd contents respectively in CdS. Such type of characteristics of Nd doped CdS thin films can be useful for optical devices.