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Magnetocaloric Effect Of Ferromagnetic Particles
[1993] Digests of International Magnetics Conference, 1993The entropy change accompanying the removal of an applied magnetic field (i.e. the magnetocaloric effect) is calculated for a system of magnetic spins independent of each other and also clustered together into independently acting magnetic particles. Mean-field-theory calculations are made for interacting, single magnetic spins and also for interacting,
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Magnetocaloric effect of ErCo2
Journal of Magnetism and Magnetic Materials, 1999Abstract The magnetocaloric effect was examined for ErCo 2 , which shows a first-order ferrimagnetic to paramagnetic transition at 32 K. The application of a magnetic field of 8 T causes a temperature change of 13 K under adiabatic conditions.
H. Wada, S. Tomekawa, M. Shiga
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Magnetocaloric effect in Gd2PdSi3
Applied Physics Letters, 2000The influence of the application of a magnetic field (H) on the temperature (T) dependence of heat capacity and isothermal magnetization has been investigated in Gd2PdSi3, a compound ordering antiferromagnetically below (TN=)21 K in zero H. Among other findings, the one to be emphasized is the observation of significant magnetocaloric effect (MCE) over
E. V. Sampathkumaran +3 more
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The Magnetocaloric Effect in Neodymium
1990The adiabatic temperature change upon magnetization, ΔTs, and the field dependent heat capacity of Nd have been measured between 5 K and 40 K in applied magnetic fils up to 7 T in order to assess its potential for use as a magnetic refrigerant in an active magnetic regenerator (AMR).
C. B. Zimm +4 more
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Applied Physics Letters, 2007
The temperature dependence of heat capacity of MnSi has been measured in the presence of different values of magnetic field. When the magnetic field is applied, an appreciable adiabatic temperature change is observed in the compound. The entropy change due to isothermal change of magnetic field is found to be significant well above the ordering ...
Parul Arora +2 more
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The temperature dependence of heat capacity of MnSi has been measured in the presence of different values of magnetic field. When the magnetic field is applied, an appreciable adiabatic temperature change is observed in the compound. The entropy change due to isothermal change of magnetic field is found to be significant well above the ordering ...
Parul Arora +2 more
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Simple enhancement of the magnetocaloric effect in giant magnetocaloric materials
Applied Physics Letters, 2003A simple method of enhancing the magnetocaloric effect (MCE)) in ferromagnetic materials is described. Thin layers of pure Fe of 0.1- and 0.2-μm thickness were evaporated onto both sides of polished 0.6-mm, slices of the giant magnetocaloric material Gd5Si1.5Ge2.5.
L. H. Lewis, M. H. Yu, R. J. Gambino
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Magnetocaloric effect in superparamagnets
Journal of Magnetism and Magnetic Materials, 1992The magnetocaloric effect is calculated for superparamagnetic materials as a function of temperature, field and cluster size. Assuming classical behavior, a universal curve is calculated from which an optimum cluster moment may be found for maximum entropy change upon application of a given field H at a given temperature T. Quantum effects are shown to
R.D. McMichael +4 more
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The magnetocaloric effect on nickel
Journal of Biological Physics, 1981The original data of Weiss and Forrer are reanalyzed with the aim to obtain a precise relation between the observed temperature rise and the magnetic field strength at temperatures both above and below the Curie temperature. The application of nonlinear least squares analysis reveals that a simple dependence of the temperature rise upon the magnetic ...
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Magnetocaloric effect in manganites
Journal of Experimental and Theoretical Physics, 2012The magnetocaloric effect (MCE) in La1 − xSrxMnO3, Sm0.55Sr0.45MnO3, and PrBaMn2O6 compounds is studied. The maximum values of MCE (ΔTmax) determined by a direct method in the second and third compositions and in La0.9Sr0.1MnO3 are found to be much lower than those calculated from the change of the magnetic part of entropy in the Curie temperature (TC)
L. I. Koroleva +3 more
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Review of the magnetocaloric effect in manganite materials
Journal of Magnetism and Magnetic Materials, 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Manh‐Huong Phan, Seong‐Cho Yu
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