Large magnetocaloric effect near room temperature in $${\mathbf{L}\mathbf{a}}_{0.67}{(\mathbf{S}\mathbf{r},\mathbf{K}/\mathbf{P}\mathbf{b})}_{0.33}{\mathbf{M}\mathbf{n}\mathbf{O}}_{3}$$ manganite nanomaterials
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DOI: 10.1007/s10854-020-04694-9
Abstract: The magnetic and magnetocaloric properties of $${\mathrm{La}}_{0.67}{\mathrm{Sr}}_{0.33}{\mathrm{MnO}}_{3}$$ ( $$\mathrm{LSMO}$$ ), $${\mathrm{La}}_{0.67}{\mathrm{Sr}}_{0.23}{{\mathrm{K}}_{0.10}\mathrm{MnO}}_{3}$$ (LSKMO), and $${\mathrm{La}}_{0.67}{\mathrm{Sr}}_{0.23}{{\mathrm{Pb}}_{0.10}\mathrm{MnO}}_{3}$$ (LSPMO) manganite nanomaterials were investigated. The superparamagnetic behavior of these nanomaterials was analyzed using the log-normal weighted Langevin function. Large change… read more here.
Keywords: magnetocaloric effect; mathbf; manganite nanomaterials; mathbf mathbf ... See more keywords
Prediction of Magnetocaloric Effect in Lanthanum Deficiency with Phenomenological Model
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DOI: 10.1007/s10948-016-3794-6
Abstract: In this paper, a profound theoretical work has been conducted on magnetic and magnetocaloric properties of La0.65−xxCa0.35MnO3 (0 ≤ x ≤ 0.15) perovskite manganites. Our work is based on a phenomenological model. The magnetization data… read more here.
Keywords: effect lanthanum; magnetocaloric effect; prediction magnetocaloric; phenomenological model ... See more keywords
Exploiting Magnetism and Magnetocaloric Effect in Nd0.55Sr0.45Mn0.98Ga0.02O3
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DOI: 10.1007/s10948-017-4046-0
Abstract: We report results of the magnetization and magnetocaloric effect in lightly Ga-doped perovskite manganites Nd0.55Sr0.45Mn0.98Ga0.02O3. It undergoes a second-order paramagnetic to ferromagnetic transition at TC = 250 K and shows a strong ferromagnetic properties below… read more here.
Keywords: 55sr0 45mn0; 45mn0 98ga0; magnetocaloric effect; 98ga0 02o3 ... See more keywords
Phenomenological Modeling of Magnetocaloric Effect for Ni58Fe26Ga28 Alloy
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DOI: 10.1007/s10948-017-4413-x
Abstract: The magnetocaloric effect (MCE) of shape memory Ni58Fe26Ga28 has been investigated. A phenomenological model is used for simulation of magnetization dependence on temperature variation to investigate magnetocaloric properties such as magnetic entropy change and heat… read more here.
Keywords: alloy; temperature; phenomenological modeling; magnetocaloric effect ... See more keywords
Observation of Magnetic Phase Transition and Magnetocaloric Effect in Ba1−xSrxMnO3−δ
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DOI: 10.1007/s10948-018-4648-1
Abstract: A series of perovskite materials (BaMnO3−δ and Ba1−xSrxMnO3) were synthesized by a solid-state reaction method. The content of oxygen vacancy can be controlled by verifying the sintering temperature and atmosphere. Two obvious divarications between zero-field-cooling… read more here.
Keywords: phase; temperature; xsrxmno3; magnetocaloric effect ... See more keywords
Metamagnetism, Multiple Magnetic Transitions and Wide Temperature Range Magnetocaloric Effect in Dy6.5Co2Si2.5 Alloy
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DOI: 10.1007/s10948-018-4849-7
Abstract: We report the structure, magnetic, thermodynamic, transport, and magnetocaloric properties of Dy6.5Co2Si2.5 alloy. It shows that this alloy has been formed in three phases viz., Dy5Si3, Dy3Co2.2Si1.8, and Dy3Co with four successive magnetic transitions named… read more here.
Keywords: 5co2si2 alloy; alloy; magnetic transitions; temperature ... See more keywords
Martensitic Transformation and Magnetocaloric Effect in High-Pressure Synthesized Ni53Mn23.5Ga23.5 Alloys
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DOI: 10.1007/s10948-019-5037-0
Abstract: The polycrystalline Ni53Mn23.5Ga23.5 ferromagnetic alloy was synthesized by high-pressure method. The Ni53Mn23.5Ga23.5 ribbons were prepared by melt-spinning; then, the ribbons were pressed to the bulk samples under the 6-GPa high-pressure and heated to 1173 K for… read more here.
Keywords: high pressure; ni53mn23 5ga23; martensitic transformation; pressure ... See more keywords
Influence of Cr-Addition on Magnetic Properties and Magnetocaloric Effect of Fe-Cr-B-Gd-Zr Rapidly Quenched Alloys
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DOI: 10.1007/s11664-019-07547-2
Abstract: In this paper, the influence of Cr on structure, magnetic properties and magnetocaloric effect of Fe82−xCr4+xB2Gd2Zr10 (x = 1, 2, 3 and 4) alloy ribbons were investigated. The ribbons with a thickness of ∼ 25 μm were prepared… read more here.
Keywords: properties magnetocaloric; temperature; magnetic properties; magnetocaloric effect ... See more keywords
Magnetocaloric Effect of Micro- and Nanoparticles of Gd5Si4
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DOI: 10.1007/s11837-019-03626-1
Abstract: Materials exhibiting a large magnetocaloric effect (MCE) at or near room temperature are critical for solid-state refrigeration applications. The MCE is described by a change in entropy (ΔSM) and/or temperature (ΔTad) of a material in… read more here.
Keywords: micro nanoparticles; temperature; effect; mce ... See more keywords
Phase Deconvolution of Multiphasic Materials by the Universal Scaling of the Magnetocaloric Effect
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DOI: 10.1007/s11837-020-04251-z
Abstract: Multiphase magnetocaloric materials result from design, where different phases are combined in a composite, or residual phases in the production of the material. The universal scaling of the magnetocaloric effect, commonly used for the study… read more here.
Keywords: phase; magnetocaloric effect; phase deconvolution; universal scaling ... See more keywords
Experimental and Monte Carlo simulation studies of the magnetocaloric effect in R2Fe17 (R = Nd and Gd) compounds
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DOI: 10.1007/s12648-019-01615-3
Abstract: Crystal structure investigations of R2Fe17 (R = Nd and Gd) have been performed with X-ray powder diffraction. The experimental results and Monte Carlo studies have been used to study the magnetic properties and magnetocaloric effect of R2Fe17… read more here.
Keywords: effect r2fe17; magnetocaloric effect; monte carlo; r2fe17 compounds ... See more keywords