Crystal structure and magnetic property correlation in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si0004.gif" overflow="scroll"><mml:mrow><mml:msub><mml:mrow><mml:mi>Cd</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">M</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Cr</mml:mi></mml:mrow><mm

Behera, P. Suchismita; Bhobe, P. A.

doi:10.1016/j.jmmm.2015.06.064

Cited by 12 publications

(3 citation statements)

References 33 publications

(33 reference statements)

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“…It is known that the fitting of χ −1 ( T ) curve using Curie–Weiss law provides a valuable information about the magnetic character of material. 46–49 In our case, by fitting the high temperature region of χ −1 ( T ), the Curie–Weiss temperature θ cw proves to be equal to 310 K. The obtained value of θ cw is positive, validating the FM character of our sample. Generally, θ cw is slightly higher than T c which refers basically to the presence of a magnetic inhomogeneity.…”

Section: Resultssupporting

confidence: 72%

Magnetocaloric study, critical behavior and spontaneous magnetization estimation in La_0.6Ca_0.3Sr_0.1MnO₃ perovskite

et al. 2018

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Section: Resultssupporting

confidence: 72%

Magnetocaloric study, critical behavior and spontaneous magnetization estimation in La_0.6Ca_0.3Sr_0.1MnO₃ perovskite

et al. 2018

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“…If the distortions are limited to structural changes alone, a higher percentage of disorder is tolerable for materials properties. However, if the disorder causes charge-imbalance in addition to structural distortions, the effect is quite drastic [32][33][34] .…”

Section: Resultsmentioning

confidence: 99%

“…Repeated cycles of re-annealing were required to ensure the formation of phase pure compositions. These were characterized by powder XRD, EDX-SEM, fourprobe resistivity, and d.c. magnetization recorded as a function of temperature as well as applied magnetic fields [32][33][34] .…”

Section: Introductionmentioning

confidence: 99%

Peek into the World of Materials Using Thermopower and Xafs as Investigative Probes

Bhobe

2017

Current Science

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Over the last few decades, there has been growing interest for developing technologies aimed at providing cleaner and more sustainable energy sources. Great efforts are directed towards synthesis of newer functional materials and tailoring the existing ones with an aim to optimize their usability. As materials are being developed with various complexities in their physical properties and forms like single crystals, thin-films, nanostructure and composites, measurement of their basic physical properties is also getting equally challenging. This review deals with a brief summary of our efforts in developing the basic understanding of some functional materials, using experimental tools that are best known to us, viz. measurement of Seebeck coefficient and X-ray absorption fine structure spectroscopy (XAFS). In particular, we discuss the results of our investigation of magnetic shape memory alloy Ni 2 MnGa and multiferroic CdCr 2 Se 4 . Keywords: Magnetic shape memory alloys, XAFS, thermopower measurements, spin-phonon coupling, magnetic semiconductors. IntroductionTHE present age research in materials science is largely focussed around providing alternative technologies aimed at cleaner and more sustainable energy sources. Hence the mention of thermoelectric power in the perspective of contemporary research generally implies new schemes for materials synthesis and device fabrication with enhanced performance. This article, however, focusses on thermopower and XAFS measurements as an investigative tool, used for understanding material properties, not limited to thermoelectrics. What is thermoelectric power?In most simple terms, thermoelectric power or thermoelectricity is all about generating electrical power from heat, using a solid-state device without combustion or moving parts. It is an effect that involves interplay between electrical and thermal properties of a material with electrons acting as the active fluid. The two primary physical phenomena that are at play in thermoelectrics are the Seebeck effect and the Peltier effect.Discovered in 1821 by T. J. Seebeck and hence named after him, this effect describes how a temperature gradient (T) across a conductor leads to electric charge flow, causing a measureable potential gradient (V) across it. Thus, V = ST, where S is the Seebeck coefficient. The opposite effect, i.e. generation of temperature gradient upon passage of electric current (I) through a conductor was discovered by J. Peltier. The expression for heat absorbed/emitted being, Q = I, where  is the Peltier coefficient. It was not until 1855, when W. Thomson (Lord Kelvin), using thermodynamics laws, showed that the Seebeck and Peltier effects are basically inter-linked. He also pointed out the need for the third effect to be considered, which is reversible heating or cooling when there is both a flow of electric current and a temperature gradient.Thus was the birth of a concept -a type of heat engine that could be used either as a device for generating electricity from heat or, alternatively, as a h...

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Structural characterization and ZFC/FC magnetization study of La0.6Ca0.4−xSrxMnO3 nanoparticle compounds

et al. 2019

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Crystal structure and magnetic property correlation in Cd1−xMxCr

Cited by 12 publications

References 33 publications

Magnetocaloric study, critical behavior and spontaneous magnetization estimation in La_0.6Ca_0.3Sr_0.1MnO₃ perovskite

Magnetocaloric study, critical behavior and spontaneous magnetization estimation in La_0.6Ca_0.3Sr_0.1MnO₃ perovskite

Peek into the World of Materials Using Thermopower and Xafs as Investigative Probes

Structural characterization and ZFC/FC magnetization study of La0.6Ca0.4−xSrxMnO3 nanoparticle compounds

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Crystal structure and magnetic property correlation in Cd1−xMxCr

Cited by 12 publications

References 33 publications

Magnetocaloric study, critical behavior and spontaneous magnetization estimation in La0.6Ca0.3Sr0.1MnO3 perovskite

Magnetocaloric study, critical behavior and spontaneous magnetization estimation in La0.6Ca0.3Sr0.1MnO3 perovskite

Peek into the World of Materials Using Thermopower and Xafs as Investigative Probes

Structural characterization and ZFC/FC magnetization study of La0.6Ca0.4−xSrxMnO3 nanoparticle compounds

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About

Magnetocaloric study, critical behavior and spontaneous magnetization estimation in La_0.6Ca_0.3Sr_0.1MnO₃ perovskite

Magnetocaloric study, critical behavior and spontaneous magnetization estimation in La_0.6Ca_0.3Sr_0.1MnO₃ perovskite