Effect Of Mn Substitution Research Articles

Effect of Mn substitution on crystal structure and cyclic property of Y–Ni alloy with superlattice structure

Effect of Mn substitution on crystal structure and cyclic property of Y–Ni alloy with superlattice structure

Effect of Mn substitution on Parasitic Reactions at the Interface of MgCr2-xMnxO4 Cathodes for Rechargeable Magnesium-Ion Battery

Effect of Mn substitution on Parasitic Reactions at the Interface of MgCr2-xMnxO4 Cathodes for Rechargeable Magnesium-Ion Battery

Study the Effect of Mn-Substitution on the Structural, Magnetic, and Dielectric Properties of Ba0.75Sr0.25Ti1−xMnxO3 Ceramics

Study the Effect of Mn-Substitution on the Structural, Magnetic, and Dielectric Properties of Ba0.75Sr0.25Ti1−xMnxO3 Ceramics

Effect of “Mn” substitution at B-site, on the crystal structure and energy storage performance of the La0.75Sr0.25CoO3 perovskite

Effect of “Mn” substitution at B-site, on the crystal structure and energy storage performance of the La0.75Sr0.25CoO3 perovskite

Effect of Mn substitution on the microstructure of (MgCoNiZnCu)O powder and its electrochemical performance as an anode material

Effect of Mn substitution on the microstructure of (MgCoNiZnCu)O powder and its electrochemical performance as an anode material

Effect of Mn substitution on Cr in the Al-Cu-Er-Mg-Zr-Fe-Si-Ti cast alloy

Effect of Mn substitution on Cr in the Al-Cu-Er-Mg-Zr-Fe-Si-Ti cast alloy

Effect of Mn Substitution on GeFe2O4 as an Anode for Sodium Ion Batteries

GeFe2O4 (GFO), with its intriguing intercalation mechanism based on alloying–conversion reactions, was recently proposed as an anode material for sodium ion batteries (SIBs). However, drawbacks related to excessive volume expansion during intercalation/deintercalation and poor electronic conductivity enormously hinder its practical application in batteries. In this regard, some experimental strategies such as cation substitutions and proper architectures/carbon coatings can be adopted. In this paper, pure and Mn-doped GFO samples were prepared by hydrothermal synthesis. The doped samples maintained the spinel cubic structure and the morphology of pure GFO. The electrochemical tests of the samples, performed after proper carbon coating, showed the expected redox processes involving both Ge and Fe ions. The Mn doping had a positive effect on the capacity values at a low current density (about 350 mAh/g at C/5 for the Mn 5% doping in comparison to 300 mAh/g for the pure sample). Concerning the cycling stability, the doped samples were able to provide 129 mAh/g (Mn 10%) and 150 mAh/g (Mn 5%) at C/10 after 60 cycles.

Sol-gel Synthesis of Mn-substituted Copper Ferrite Nano Particles as Anode for Lithium Ion Batteries

Mn substituted copper ferrites (MnxCu1-xFe2O4, x = 0, 0.33, 0.67, 1.00) have been synthesized from metal nitrates and citric acid by sol-gel method (chemical process). This study aims to know the effects of Mn substitution on structural, magnetic, and electrochemical properties of copper ferrites. For characterizing the prepared ferrites, different techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) spectroscopy were used. In addition, vibrating sample magnetometer (VSM) is used to investigate the magnetic properties such as saturation magnetization (Ms), residual magnetism (Mr) and coercive force (Hc). A single-phase spinal structure was confirmed by XRD and lattice parameter was increased from 8.36 Å to 8.52 Å with increasing Mn contents. Micrographs of SEM shows that nanoparticles are agglomerated and non-uniform in size. The FTIR analysis shows that theses absorption band about 1422 cm-1 to 1434 cm-1 was attributed octahedral B-site. For pure copper ferrite, band is shifted towards higher frequency by manganese content. The results from CV showed that the increasing in scan rate and specific capacitance decreases due to increase in the area loop which clearly means that the investigated samples are best for storage devices such as lithium ion batteries (LIBs).

DFT insights into LaFeO3 with Mn substitution: A promising path to energy-efficient magneto-optical applications.

In recent years, the demand for electronic materials has significantly increased, driven by industrial needs and the pursuit of cost-efficient alternatives. This comprehensive study investigates the effects of Mn substitution on LaFeO3 through the implementation of the GGA approach in density functional theory. The research findings demonstrate remarkable consistency with the experimental outcomes reported in the existing literature pertaining to the studied compounds. However, this study unveils novel insights into the mechanical and optical characteristics of the doped structures, which have not been previously reported. The structural stability is rigorously examined through multiple stability criteria, encompassing structural optimization, tests of elastic stability, and enthalpy of formation calculations. Furthermore, the electronic and optical properties of the compounds exhibit exceptional improvements in conductivity and reflectivity as a result of the doping process. The band structure analysis reveals the presence of a Moss-Burstein shift. Investigation of the magnetic properties indicates an increase in the magnetic moment value due to the Fe-Mn degeneracy resulting from increased Mn content. Mechanical analysis of the elastic moduli B, G, and Y demonstrates an enhanced strength and metal-like conductivity, attributed to the induced anharmonicity. Moreover, the internal strain factor suggests a higher degree of bond flexibility, implying potential applications of these compounds in flexible electronics.

Effect of Manganese-Doping on the chemical and optical properties of cobalt ferrite nanoparticles

Effect of Manganese-Doping on the chemical and optical properties of cobalt ferrite nanoparticles

Effect of Mn substitution on the electronic structure for Mn-doped indium-tin oxide films studied by soft and hard x-ray photoemission spectroscopy

Effect of Mn substitution on the electronic structure for Mn-doped indium-tin oxide films studied by soft and hard x-ray photoemission spectroscopy

Effect of moderate Fe doping and heat treatment on the microstructure of Ni-Mn-Ga melt-spun ribbons

Effect of moderate Fe doping and heat treatment on the microstructure of Ni-Mn-Ga melt-spun ribbons

Effect of Mn Substitution on the Dielectric Constant and Breakdown Voltage of Anti-ferroelectric PLZT

Effect of Mn Substitution on the Dielectric Constant and Breakdown Voltage of Anti-ferroelectric PLZT

Structural effects of Mn-substitution in β-FeSe

In the present work the structural and microstructural properties of Mn substituted β-FeSe are inspected by using high-resolution synchrotron X-ray powder diffraction data collected between 10 K and 150 K. It is demonstrated that the thermal increase of the structural strain in the tetragonal phase progressively breaks the 4-fold symmetry at the local scale, qualitatively tracing the development of anisotropy measured in some physical properties, generally ascribed to nematicity. This result points to a close relationship and interplay between structural strain and physical properties; with this notion, the structural strain can be considered as the origin of the unexpected anisotropy observed in some physical properties. Remarkably, incommensurate satellite peaks are observed in the diffraction pattern collected in the low-temperature orthorhombic phase field, likely related to the occurrence of a charge-density-wave instability.

Effects of Mn-substitution on magnetic properties of R6TX2-based (R = Gd–Dy, T = Mn–Ni; X = Sb and Te) multinary compounds

Effects of Mn-substitution on magnetic properties of R6TX2-based (R = Gd–Dy, T = Mn–Ni; X = Sb and Te) multinary compounds

Effect of Mn substitution on plateau pressure regulation of the Ti0.92Zr0.1Cr1.6−xMnxFe0.4 alloys for primary hydrogen compressor

Effect of Mn substitution on plateau pressure regulation of the Ti0.92Zr0.1Cr1.6−xMnxFe0.4 alloys for primary hydrogen compressor

First principles calculation to investigate the effect of Mn substitution on Cu site in CeCu3-x Mn x V4O12 (x = 0, 1, 2 and 3) system.

Structural, electronic, elastic and magnetic properties of CeCu3-x Mn x V4O12 (x = 0, 1, 2 and 3) system have been carried out through DFT using GGA, GGA+U and HF potential. The investigation of structural optimization reveals that lattice parameters of the understudy system is reliable with the reported results and are increasing with the Mn substitution due to their greater atomic radii as compare to Cu atom. Both the cohesive energy and the enthalpy show that CeCu3V4O12 is the most thermodynamically stable among these compounds. When Mn is replaced by Cu in these compounds, not only it become semi-metals, but the host compound also changes from non-magnetic to anti-ferromagnetic and their electrical resistance provides further credence to their electronic behavior. Mechanical stability, anisotropy, and ductility are all demonstrated through the elastic characteristics of these compounds. Due to anti-ferromagnetic ductile nature of the Mn base compounds, it is expected that the compounds in the system may use for spintronic application and in magnetic cloaking devices.

UV–vis-enhanced photothermal catalytic reforming of biomass model tar via LaMnxNi1-xO3 perovskite catalyst

UV–vis-enhanced photothermal catalytic reforming of biomass model tar via LaMnxNi1-xO3 perovskite catalyst

Effects of the on-site energy on the electronic response of Sr3(Ir1−xMnx)2O7

We investigated the doping and temperature evolutions of the optical response of Sr3(Ir1−xMnx)2O7 single crystals with 0 ≤ x ≤ 0.36 by utilizing infrared spectroscopy. Substitution of 3d transition metal Mn ions into Sr3Ir2O7 is expected to induce an insulator-to-metal transition via the decrease in the magnitude of the spin–orbit coupling and the hole doping. In sharp contrast, our data reveal the resilience of the spin–orbit coupling and the incoherent character of the charge transport. Upon Mn substitution, an incoherent in-gap excitation at about 0.25 eV appeared with the decrease in the strength of the optical transitions between the effective total angular momentum Jeff bands of the Ir ions. The resonance energies of the optical transitions between the Jeff bands which are directly proportional to the magnitude of the spin–orbit coupling hardly varied. In addition to these evolutions of the low-energy response, Mn substitution led to the emergence of a distinct high-energy optical excitation at about 1.2 eV which is larger than the resonance energies of the optical transitions between the Jeff bands. This observation indicates that the Mn 3d states are located away from the Ir 5d states in energy and that the large difference in the on-site energies of the transition metal ions is responsible for the incoherent charge transport and the robustness of the spin–orbit coupling. The effect of Mn substitution was also registered in the temperature dependence of the electronic response. The anomaly in the optical response of the parent compound observed at the antiferromagnetic transition temperature is notably suppressed in the Mn-doped compounds despite the persistence of the long-range antiferromagnetic ordering. The suppression of the spin-charge coupling could be related to charge disproportionation of the Ir ions.

The effects of Mn substitution on the crystalline phase structure, microstructure, DC resistivity, and magnetic-dielectric properties of Z-type hexaferrites

A series of the Ba 1.5 Sr 1.5 Co 2- x Mn x Fe 23 O 41 ( x = 0.0–0.5) hexaferrites was prepared by the conventional solid-state reaction method. The crystalline phase structure, microstructure and magneto-dielectric properties of samples were investigated. Z-type and W-type phases were detected in hexaferrites sintered at 1200 °C. Mn substitution can reduce the content of the second phase, changes the ion occupancy, magnetic moment, and electron hopping in hexaferrite. Therefore, the magnetic, DC resistivity, and dielectric properties were altered, and the losses were successfully reduced in the substituted samples. Particularly, the Ba 1.5 Sr 1.5 Co 1.8 Mn 0.2 Fe 23 O 41 hexaferrite has a more homogeneous crystal phase; its μ i is 18.5, f r exceeds 1 GHz, and the Snoek’s constant reaches 18.55 GHz. At the same time, this hexaferrite were characterized by a relatively large magnetic quality factor and low dielectric losses ( tan δ ε < 0.05 below 500 MHz). This Z-type hexaferrite has excellent high-frequency magneto-dielectric properties and holds a potential for use in miniature antennas. • The results show that an appropriate amount of Mn substitution can reduce the content of the second phase, increase the permeability, permittivity and Snoek’s constant, and lower the magnetic and dielectric losses. • Favorable magnetic and dielectric properties at high frequencies were obtained in the Ba 1.5 Sr 1.5 Co 1.8 Mn 0.2 Fe 23 O 41 hexaferrite. In this hexaferrite, the second phase content is less, μ i is 18.5, Snoek’s constant reaches 18.55 GHz, ε’ around 16, and magnetic and dielectric losses are low. • This Z-type hexaferrite has excellent high-frequency magnetic and dielectric properties with low losses, therefore, it can meet the requirements on both miniaturization and high-frequency applications.