Different Concentrations Of Sm Research Articles

Sm3+ activated Ba3LaNa(PO4)3F fluorophosphate phosphor: Synthesis, characterization and their photoluminescence investigation for warm WLEDs

In this present research report, the series of Ba3LaNa(PO4)3Fphosphor doped with Sm3+ was successfully synthesized by using a high-temperature solid-state reaction method. The phase purity was examined using X-ray diffraction (XRD), which confirmed a pure phase of prepared material after sintering the sample at 700 °C. Fourier transform infrared (FT-IR) spectra showed absorption bands corresponding to the stretching and vibrational modes of PO4 in phosphate. Scanning electron microscopy (SEM) images displayed the morphology of sample and agglomerated structure of micron-sized particles. Photoluminescence excitation (PLE) and emission spectra of the Ba3LaNa(PO4)3F: Sm3+ phosphors were studied. When excited with near-UV light, the phosphor showed three prominent peaks at 567, 604, and 643 nm. The emission spectra for different concentrations of Sm3+ ions were also measured to find the optimal dopant concentration. The highest intensity was observed at a 2.0 mol% concentration of Sm3+ ions at 604 nmwith concentration quenching occurring beyond this point. The CIE chromaticity coordinates for the different concentration phosphor were located in the orange-red region, indicating its characteristic light emission. So therefore, these results suggested that the synthesized reddish-orange light-emitting Ba3LaNa(PO4)3F: Sm3+prepared phosphor is promising for applications in white light-emitting diodes (WLEDs).

Beta-irradiated ZnGa2O4:Sm3+ phosphor: Thermoluminescence glow curves and kinetic parameters via gel combustion synthesis

This study examines the X-ray Diffraction (XRD) characteristics of Sm3+-doped ZnGa2O4 phosphor, shedding light on its structural characteristics. The XRD data reveal distinctive peaks that represent the crystal's lattice structure. This provides the basis for a more detailed analysis of thermoluminescence (TL). Initially, the TL glow curves corresponding to different concentrations of Sm were analysed, leading to the identification of the most favorable Sm concentration. Subsequently, an investigation was conducted into the TL behavior of the material in response to varying doses within a broad spectrum of beta radiation, revealing a linear characteristic (b=1.075) across doses ranging from 0.1 Gy to 50 Gy. Following this, a reusability assessment was executed over three measurement sets, wherein it was ascertained that the deviation in peak area across ten cycles did not surpass 2 %. Furthermore, it was investigated how different heating rates ranging from 0.5 °C/s to 7 °C/s affect the TL curve of the material. To determine the TL trap parameters of the sample, Initial Rise (IR) and Computerized Glow Curve Deconvolution (CGCD) methods were employed. A consistent pattern of activation energy values was observed in both IR in the TM-Tstop experiment and CGCD analyses, indicating a uniform response to distinct energy levels within the sample. In terms of providing valuable insights into the characteristics of TL, these methods were found to be very effective. This contributed to a comprehensive understanding of charge carrier dynamics within the crystal lattice. Moreover, Peaks I, II, and III showed a linear response to applied doses, indicating the material's potential for dosimetry applications. The findings of this study not only provide insights into Sm3+-doped ZnGd2O4 phosphors' TL properties, but also enhance our understanding of how to optimize their radiation response.

Concentration Dependence of Sm2O3 on Physical, Optical and Luminescence Properties of Na2O:Al2O3:Gd2O3:P2O5 Glass System

The Na2O:Al2O3:Gd2O3:P2O5 glasses were doped with different concentrations of Sm3+ ions and synthesized by the melt-quenching technique. These glasses were investigated to characterize physical and spectroscopy analyses that have been carried out by density, molar volume, absorption, FTIR, and photoluminescence measurements. The density and molar volume of glasses increases with the addition of Sm2O3 concentration. Glasses absorbed photons in UV, VIS, and NIR regions. The strong orange emission via the 4G5/2 to 6H7/2 radiation transition of Sm3+ was generated under 275 and 402 nm excitation. The glass has an interesting potential photonic application.

Effect of Sm3+ ions doping on the structural and optical properties, Judd-Ofelt and radiative parameters of ZnS phosphor materials

Undoped ZnS and Sm3+ doped with varying concentration of ZnS phosphor materials were synthesized via low temperature solid state reaction method. The samples were investigated for the influence of different concentrations of Sm3+ ions on their structural and spectroscopic properties. The presence of various absorption bands in UV–Vis–NIR spectra revealed the transition from ground state to different excited states of Sm3+ ions. The Judd-Ofelt (JO) analyses were evaluated to identify the structure and the bonding around the Sm3+ ions. The high value of Ω2 intensity parameter reveals that the site symmetry is lower. The parameters such as radiative transition probabilities, radiative lifetime, branching ratio, stimulated emission cross-sections and the optical gain parameters are also evaluated. The PL spectra shows five high intensity emission bands centered at 567 nm, 590 nm, 619 nm, 641 nm and 667 nm corresponding to 4G5/2→6Hj (j = 5/2, 7/2,9/2, 11/2, 13/2) transitions and showed optimum for concentration at x = 0.03 in Zn(1-x)S. The quantum yield of the prepared optimal phosphor using integrating sphere method was found to be 10.08%. This indicates that the materials synthesized may be favorable for the applications of laser and other optical devices.

Deep reddish-orange emitting Sr3Gd(PO4)3: Sm3+ phosphors via modified citrate-gel combustion method

The photoluminescence properties of different concentrations of Sm3+ activated Sr3Gd(PO4)3 phosphors synthesized by modified citrate gel-combustion method were investigated for white light emitting diode (w-LED) applications. The studied phosphors were characterized through powder x-ray diffraction (PXRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), photoluminescence excitation, emission and lifetime studies. The PXRD profiles confirmed the body centred cubic structure of undoped and Sm3+ -doped phosphors. The SEM studies showed the distribution and agglomeration of particles. The characteristic emission transitions such as 4G5/2 → 6H5/2 (∼561 nm), 4G5/2 → 6H7/2 (∼598 nm), 4G5/2 → 6H9/2 (∼645 nm) and 4G5/2 → 6H11/2 (∼705 nm) were noticed at their respective positions when excited at 403 nm wavelength. The highest luminescence intensity was found for 1.0 mol% of Sm3+ doped phosphors at 403 nm excitation showing luminescence quenching and it was ascribed to dipole-dipole interaction type of energy transfer among the excited Sm3+ ions at higher concentrations. The reddish-orange color of emitted luminescence was examined by evaluating the chromaticity coordinates. The experimental results confirm the potentiality of studied phosphors for w-LED applications.

Visible luminescence in Sm3+ doped CaY2Al4SiO12 garnet obtained by sol-gel method

A series of CaY2Al4SiO12 garnet phosphor doped with different concentrations of Sm3+ varying from 0.01 mol to 0.11 mol was prepared by using the sol-gel method. Structural investigations were conducted by recording the X-ray diffraction (XRD) patterns. The UV-Vis diffuse reflectance spectrum was recorded to identify the optical band gap. The luminescence behavior was studied by recording the excitation and emission spectra. The emission spectra recorded under 403 nm excitation revealed emission peaks due to f-f transitions of Sm3+ ions. The optimum amount of Sm3+ was also identified by studying the concentration effect. The studied colorimetric properties revealed the orange color emission of the prepared garnet phosphors. These results support the potential utility of the prepared garnet phosphor in display and lighting devices.

Photoluminescence, radiative shielding properties of Sm3+ ions doped fluoroborosilicate glasses for visible (reddish-orange) display and radiation shielding applications

The various concentrations of trivalent samarium ions activated SiO2 +B2O3 + Na2CO3 + NaF + CaF2 (SBNC) glasses have been prepared with the conventional melt quenching method. Various physical parameters like density, refractive index, thickness, etc were evaluated/calculated for prepared glasses. The synthesized glasses were subject to analysis through FTIR, absorption, photoluminescence excitation, emission and fluorescence decay measurements. Judd-Oflet parameters (Ω2, Ω4 and Ω6) were estimated for all investigated SBNCSm glasses and calculated various radiative parameters. The fluorescence emission spectra consist of four sharp peaks centered at 564 nm (4G5/2 →6H5/2), 600 nm (4G5/2 → 6H7/2), 660 nm (4G5/2 →6H9/2), and 710 nm (4G5/2 →6H11/2). The glass doped with 0.5 mol % Sm3+ ions (SBNCSm05) has the highest emission intensity for 4G5/2 →6H7/2 transition (600 nm (orange)). The characteristic fluorescence emission parameters were calculated. The SBNCSm05 glass attains the higher values of stimulated emission cross-section (σemi = 11.23 × 10−20 cm2), the gain bandwidth (σemi x Δλeff = 16.22 × 10−25 cm3) and optical gain parameter (σemix τR = 19.85 × 10−25 cm2s). The lifetime of excited of Sm3+ ions (4G5/2) was estimated using the least square fitting method. The CIE chromaticity coordinate values of investigated glasses confirmed the emitted radiation fall in the visible reddish-orange region of the EM spectrum. Moreover, the shielding capacity of SBNCSm glasses against gamma photons and fast neutrons were extensively evaluated using Py-MLBUF online software. The results clearly shows that the different concentrations of Sm3+ ions into SBNC glasses improved both shielding and optical properties. The obtained values suggested that the SBNCSm05 and SBNCSm20 glasses can be used as a potential candidate in photonic device applications and radiation shielding applications.

Thermal stability and luminescence of novel garnet-type yafsoanite Ca3Zn3(TeO6)2:Sm3+ phosphors for white LEDs

In this study, novel garnet-type yafsoanite tellurate Ca3Zn3(TeO6)2:Sm3+ phosphors are successfully synthesized using the traditional high-temperature solid-state reaction. The phase purity of the obtained phosphors is analyzed by X-ray diffraction and Rietveld refinement studies. Morphological variations are also observed with the different concentrations of Sm3+ ions substitution, which is analyzed using Scanning Electron Microscopy (SEM). The photoluminescent properties of the phosphors are systematically investigated. Results show that the samples display the strongest emission peak at 612 nm under the near-ultraviolet (n-UV) 409 nm excitation. This peak can be ascribed to the 4G5/2 → 6H7/2 transition of Sm3+. The Ca3Zn3(TeO6)2:Sm3+ phosphor shows a high color purity, exhibits excellent thermal stability and good color drifting resistance. Furthermore, red and white light-emitting diodes have been successfully prepared. The white light-emitting diodes (w-LEDs) demonstrates a high color rendering index (CRI, Ra) and low correlated color temperature (CCT). This study introduces a new orange-red-emitting phosphor and discusses its application in herb-growth w-LEDs.

Reformed solution combustion approach for probing of structural and dielectric properties of Sm3+ doped GdAlO3 nanoparticles

A reformed solution combustion technique incorporated for the synthesis of nanosized Gd1−xSmxAlO3 (x = 1, 3, 5, 7, 9 mol%) using a mixture of ODH and E-tirucalli plant latex as fuels. The structural morphology of amalgamated nanomaterials is revealed from different methods like x-ray diffraction analysis, electron microscopic studies, Optical characterizations such as FTIR, UV-Visible and Photoluminescence studies. XRD confirms the formation of phase pure gadolinium nano aluminates of 50–60 nm size. Fourier infrared transform spectra depict the formation of the metal-oxygen ligand complex bond between the Al3+ and Gd3+ with oxygen ions referring to the perovskite structure. Photoluminescence studies under the excitation wavelength of 405 nm are carried out. Effect of different concentrations of Sm3+ over the dielectric parameters was studied under room temperature in the radio frequency range using LCR meter. The outcomes clearly indicate that the inclusion of Sm3+ leads to an increase in permittivity. Other parameters like Ac conductivity and energy dissipation decrease with frequency. The Nyquist plot shows the contribution of both grains and its boundary for the impedance of the synthesized nanomaterial.

Optical spectroscopy of thermal stable Na2ZnP2O7:Sm3+/(Li+, K+) phosphors

Na2ZnP2O7 pyrophosphates doped with different concentrations of Sm3+ were synthesized successfully via a solid-state reaction process. A vibrational Raman-IR spectroscopic and diffraction analysis has been performed. The Na2ZnP2O7:Sm3+ powders were crystallized in a tetragonal lattice with P42/mnm space group. The photoluminescence (PL) emission and PL excitation (PLE) spectra were studied as a function of Sm3+ concentration. The optimal Sm3+ doping concentration in Na2ZnP2O7 host matrix is determined to be 1 mol%. In order to enhance the luminescent intensity of these phosphors, the compensator charge Li+ and K+ ions were introduced in the Na2ZnP2O7 host. Furthermore, the luminescence of Na2ZnP2O7:Sm3+ indicates good thermal stability at high temperatures. The chromaticity diagram of the Commission International de l′Eclairage (CIE) was investigated, indicating a bright orange-red emission. Hence, the obtained results indicate that the as-prepared phosphor can be a potential candidate for application in Light Emitting Diodes (LEDs).

The studies of energy transfer between Sm3+ ions in lead sodium telluroborate glasses using Inokuti-Hirayama model

Lead sodium telluroborate (LSTB) glasses doped with different concentrations of Sm3+ ions were prepared by melting method. The excitation, emission spectra and lifetimes of LSTB:Sm3+ have been investigated. The quenching of luminescence intensity happens after 0.75 mol% concentration of Sm3+ ions. The non-exponential decay curves are fitted to the Inokuti and Hirayama model to give the energy transfer parameters between Sm3+ ions. The dominant interaction mechanism for energy transfer process is dipole–dipole interaction. The energy transfer probability (WDA) increases whereas lifetime (τexp) decreases with the increase of Sm3+ concentration in glass.

Luminescence characterization of Sm3+-doped sodium potassium borate glasses for laser application

Sodium potassium borate glasses doped with different concentrations of Sm3+ ions (NKBSm) were prepared using a normal melt quench technique. Optical absorption, excitation, emission and emission decay measurements were performed to understand visible luminescence and lasing potentialities of the prepared glasses. The bonding parameters (δ) have been estimated from the absorption spectra to know about the bonding nature between Sm3+ ions and nearby ligands. The Judd–Ofelt (J–O) intensity parameters (Ωλ, λ = 2, 4, and 6), acquired from the experimental oscillator strengths of the absorption spectral features were used to estimate different radiative properties of the fluorescent transitions, 4G5/2→6HJ, J=5/2, 7/2, 9/2 and 11/2, of Sm3+ ions in NKBSm glasses to get knowledge about the potentiality of these materials as visible lasers. The asymmetric ratios (O/R) were calculated to know the local disorder of Sm3+ ions in the glass network. The experimental lifetimes (τexp) for 4G5/2 emission state were found to be decreasing with increasing Sm3+ ion concentration owing to energy transfer. The quantum efficiency (η) of NKBSm10 glass has been measured by coupling the experimental lifetime (τexp), measured from the decay profiles with radiative lifetimes (τR), obtained from J-O theory. The strong visible emission, large stimulated emission cross-section (σe), high branching ratios (βR) and good quantum efficiency (η) were observed for the most intense transition 4G5/2 → 6H7/2 (orange) in NKBSm10 glass, indicating the suitability of this glass for the development of laser and photonic devices operating in visible region.

Concentration dependent spectroscopic behavior of Sm3+-doped sodium fluoro-phosphates glasses for orange and reddish-orange light emitting applications

Sodium fluoro-phosphate (NNS) glasses doped with different concentrations of Sm3+ ions have been prepared using conventional melt quenching technique and characterised for their lasing potentialities using spectroscopic techniques such as Raman, optical absorption, emission and emission decay measurements. The structures of glasses were investigated by X-ray diffraction (XRD) and Raman spectroscopy to understand their dependence of structure on composition. Absorption spectrum from near infrared to visible was obtained and the Judd–Ofelt (J-O) intensity parameters (Ω2, Ω4, and Ω6) were determined. Spontaneous emission probabilities of some relevant transitions, branching ratio, and radiative lifetimes of several excited states of Sm3+ have been predicted using intensity J-O parameters. The luminescence intensity decreases with the increase in Sm3+ ion concentration beyond 0.5 mol% and the same was discussed through various energy transfer mechanism which takes place between Sm3+ ions. The lasing parameters like peak stimulated emission cross-section (σep), branching ratios (βR), measured branching ratios (βexp) and radiative lifetime (τrad) for the excited 4G5/2 luminescent level have been calculated, discussed and reported. The measured lifetime (τmeas) of the 4G5/2 excited level is found to be single exponential up to 0.5 mol% and after that it changes into non-exponential for higher concentration and the non-exponential behavior arises due to the energy transfer between the Sm3+ ions through various cross-relaxation channels. The non-exponential decay rates, at higher concentrations, were fitted to Inokuti–Hirayama (IH) model for S = 6 which reveals that the energy transfer process is of dipole–dipole in nature. The R/O intensity ratios have been studied by varying the RE ion concentration and further CIE color chromaticity coordinates have also been calculated to characterize the emission of the prepared glasses. Using the Mc-Cumber method, emission cross-section (σem), Absorption cross-section (σa), and gain cross-section (G(λ)) for the 6F9/2→6H5/2 transition, were calculated.From the emission characteristic parameters of 4G5/2 level, it is concluded that the NNS glasses could be useful for photonic devices like visible lasers, fluorescent display devices and optical amplifiers.

Effect of Samarium (Sm) Addition on the Microstructure and Tensile Properties of Al–20%Si Casting Alloy

In the present work, the effect of Sm addition (0.2, 0.4, 0.6, and 0.8 wt%) on the microstructure evolution and tensile properties of as-cast hypereutectic Al–20%Si alloy were investigated. The scanning electron microscopy, X-ray diffraction (XRD), and electron probe microanalysis with wavelength dispersive spectroscopy (WDS) were used to quantitatively characterize the samples. The results indicated that the primary Si phases were significantly refined from coarse polygonal and star-like shape to fine block with smooth edges and corners when the addition of Sm increased from 0 to 0.6%. Furthermore, eutectic Si phases were fully modified from coarse platelet-like/needle-like structure to fine fibrous structure and discrete particles with the addition of 0.6%Sm. However, the primary and eutectic Si phases became coarser when the level of rare earth Sm reached 0.8%. The analysis of XRD and WDS shows that Sm mainly exists in the form of Al2Si2Sm compounds. In addition, the tensile properties of as-cast Al–20%Si alloy with different concentrations of Sm were investigated by tensile test. It was found that the ultimate tensile strength (UTS) and elongation (EL) gradually enhanced with the increasing concentration of Sm from 0 to 0.6% due to decrease of the size and the change of morphology on Si phases. Compared with unmodified Al–20%Si alloy, the UTS and EL values of Al–20%Si alloy with 0.6%Sm were increased by 48.5 and 68.8%, respectively.

Photoluminescence studies of CdWO4:Sm3+ phosphor: Concentration and annealing effect

A series of CdWO4 doped with different concentrations of Sm3+ have been successfully prepared by the combination of co-precipitation method with annealing of the precipitate formed. The prepared samples were characterized by XRD, TEM, FT-IR, SAED, EDS and PL. XRD studies exhibited monoclinic wolframite structure of the prepared samples and the crystallinity was increased with the increase of annealing temperature upto 900°C without any structural changes. FT-IR studies indicated vibrational bands of metal cations bonds like Cd-O, W-O and Cd-O-W for the CdWO4:Sm3+ phosphors in the ranges from 400 to 900cm−1. Photoluminescence studies showed characteristic emission lines of Sm3+ centers at 569, 608, 653 and 715nm upon 279nm UV light excitation. The observed most intense peak at 653nm is due to the 4G5/2-6H9/2 transition. The optimum concentration of Sm3+ was found at 1 at.%. The photoluminescence intensity was increased with the increase of annealing temperature.

Spectral investigations of Sm3+-doped niobium phosphate glasses

Phosphate glasses modified with niobium and doped with different concentrations of Sm3+ ions (P2O5+K2O + Al2O3+Nb2O5+Sm2O3) were prepared by conventional melt quenching technique. Structural and optical characterizations have been carried out through X-ray diffraction (XRD), absorption, excitation, emission and decay measurements. With the help of well known Judd-Ofelt theory (JO), various radiative properties such as radiative transition probabilities (AR), branching ratios (βR) and radiative lifetime (τR) for certain luminescent levels of Sm3+ ions have been determined. The emission spectra consists of four emission bands in the visible region that corresponds to the 4G5/2 → 6HJ (J = 5/2, 7/2, 9/2 and 11/2) transitions of Sm3+ ions. The stimulated emission cross-section found to be higher for 4G5/2 → 6H7/2 (11.52 × 10−22 cm2) and 4G5/2 → 6H9/2 (13.75 × 10−22 cm2) transitions. Experimental lifetimes (τexp), quantum efficiencies (η), energy transfer parameter (Q) and donor-acceptor interaction parameter (CDA) for all these glasses were evaluated under the frame work of Inokuti-Hirayama model. From the analyzed spectroscopic properties, such as quantum efficiency (98%) and CIE chromaticity coordinates, it is suggested that the 1.0 mol % of Sm3+ ions doped glasses are most suitable for the development of gain media for visible orange-red lasers.

Antimutagenic, Antigenotoxic, and Anticytotoxic Activities of Silybum Marianum [L.] Gaertn Assessed by the Salmonella Mutagenicity Assay (Ames Test) and the Micronucleus Test in Mice Bone Marrow

ABSTRACTSilymarin (SM), a standardized extract from Silybum marianum (L.) Gaertn., is composed mainly of flavonolignans, and silibinin (SB) is its major active constituent. The present study aimed to evaluate the antimutagenic activities of SM and SB using the Ames mutagenicity test in Salmonella Typhimurium, as well as their anticytotoxic and antigenotoxic activities using the mouse bone marrow micronucleus test. To assess antimutagenicity, Salmonella Typhimurium strains were treated with different concentrations of SM or SB and the appropriate positive control for each strain. To assess antigenotoxicity and anticytotoxicity, Swiss mice were treated with different concentrations of SM or SB and mitomycin C (MMC). The results showed that SM was not significantly effective in reducing the number of frameshift mutations in strain TA98, while SB demonstrated significant protection at higher doses (P < 0.05). Regarding strain TA 100, SM and SB significantly decreased mutagenicity (point mutations) (P < 0.05). The results of the antigenotoxic evaluation demonstrated that SM and SB significantly reduced the frequency of micronucleated polychromatic erythrocytes (MNPCE) (P < 0.05). The results also indicated that SM and SB significantly attenuated MMC-induced cytotoxicity (P < 0.05). Based on these results, both SM and SB presented antimutagenic, antigenotoxic, and anticytotoxic actions.

Fluorescence properties of Sm3+ ions in yttrium aluminum borate phosphors for optical applications

Different concentrations of Sm3+-doped yttrium aluminum borate (YAl3(BO3)4) phosphors were prepared by solid-state reaction method. The phase analysis has been carried out by X-ray diffraction studies. Fluorescence properties were investigated through emission, excitation and decay measurements. Upon 404nm excitation, YAl3(BO3)4:Sm3+ phosphors exhibit their characteristic emission lines at 564nm (4G5/2→6H5/2), 600nm (4G5/2→6H7/2), 646nm (4G5/2→6H9/2) and 707nm (4G5/2→6H11/2). Both emission and excitation spectra show a luminescence quenching beyond 0.01mole concentration of Sm3+ ions due to the energy transfer among the excited Sm3+ ions at higher concentrations. The YAl3(BO3)4:0.01Sm3+ phosphor can be used as a promising material producing intense orange-red emission for various optical applications.

Effect of Sm2O3 on structural and thermal properties of zinc fluoroborate glasses

Glasses based on Sm3+ doped zinc fluoroborate were synthesized and characterized. Formations of glasses were investigated in the 30ZnF2–20TeO2–(50–x)B2O3–xSm2O3 matrix. Fast quenching and adequate heat treatment are required to prevent melt crystallization and to diminish thermal stress, which result in an efficient amorphous material. The differential scanning calorimetry (DSC), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray photoelectron spectroscopy (XPS) were employed to record, calculate, measure and analyze the stability, density and refractive index of the glass samples with different concentrations of Sm3+ ranging between 0 to 2.5% (mass fraction). XPS result shows the values of core-level binding energy (Zn 3s, Sm 4d, Te 3d, B 1s, O 1s and F 1s) of (ZnF2–TeO2–B2O3–Sm2O3) glass matrix and indicates the good fusibility of the present glass samples. Density of the glass samples increases as dopant concentration increases and glass transition temperature tg ranges between 395 °C and 420 °C.

Radiative properties and luminescence spectra of Sm3+ ion in zinc–aluminum–sodium-phosphate (ZANP) glasses

The fluorescence properties of different concentrations of Sm3+ doped zinc–aluminum–sodium-phosphate (ZANP) glasses were studied by the XRD, SEM, FTIR, TG–DTA, optical absorption, photoluminescence and decay cure analysis. X-ray diffraction profiles and SEM images confirmed the amorphous nature of the glass samples. Structural information of these glass matrices was provided by FTIR spectrum. Judd–Ofelt (J–O) theory was applied to the experimental oscillator strengths to evaluate three phenomenological J–O intensity parameters, Ωλ (λ=2, 4 and 6). Using J–O intensity parameters and emission spectra, various radiative parameters such as radiative transition probabilities (AR), radiative lifetimes (τR), calculated and measured branching ratios (βR and βm), effective bandwidths (Δλeff) and stimulated emission cross-sections (σP) were calculated for observed emission transitions. The intensity of emission transitions with the variation of Sm3+ ion concentration was studied. The nature of decay curves of 4G5/2 level for different Sm3+ ion concentrations in ZANP glass was analyzed and obtained measured lifetimes (τexp). Quantum efficiency of 4G5/2 level was calculated based on experimental and measured radiative lifetimes (τexp and τR).