Results 261 to 270 of about 28,460 (303)

Magnetic Properties and Magnetic Entropy Change in Gd/Ti Multilayers

IEEE Transactions on Magnetics, 2014
[Gd/Ti] n multilayers with different thicknesses of Gd layers (L Gd ) have been prepared by magnetron sputtering. These multilayers exhibit second-order phase transitions at different temperatures, which are determined by L Gd . The peak value of magnetic entropy change in Gd(300 nm) film is nearly two times smaller than the one of bulk Gd.
Andrey V. Svalov, Vladimir V. Vas'kovskiy, Konstantin G. Balymov, Javier Alonso, Ma Luisa Fdez-Gubieda, Galina V. Kurlyandskaya   +5 more
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Magnetic structure and magnetic entropy change in the intermetallic compound DyCoAl

Journal of Applied Physics, 2010
Magnetic and magnetocaloric properties of polycrystalline DyCoAl compound have been studied in fields up to 9 T. This compound orders ferromagnetically at ∼37 K (TC). A maximum magnetic entropy change of ∼−18 J/kg/K is obtained for a field change of 9 T near TC which is reasonably large.
J. Arout Chelvane, Tilak Das, Rabindra Nath Mahato, A. V. Morozkin, Jagat Lamsal, W. B. Yelon, R. Nirmala, S. K. Malik   +7 more
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Effect of a magnetic field on magnetic entropy change in LaFe11.7Si1.3 compound

Journal of Rare Earths, 2011
The magnetocaloric effect of LaFe11.7Si1.3 compound was investigated under an external magnetic field up to 9 T. The magnetization changed drastically at the Curie temperature T-C under different fields and T-C increased with the applied fields. The magnetic entropy change |Delta S-M| vs temperature peak consisted of a spike and a plateau.
Wei ZHANG, Bo LI, Zhengnan QIAN, Jingyun ZHANG, Hongwei ZHANG, Wenhui SU   +5 more
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Scaling of the magnetic entropy change of Fe3−xMnxSi

Journal of Magnetism and Magnetic Materials, 2014
Abstract The magnetic entropy change of Fe 3− x Mn x Si (for x =1.15, 1.3 and 1.5) has been extracted from isothermal magnetization measurements near the Curie temperature. We used the scaling hypotheses of the thermodynamic potentials to scale the magnetic entropy change to a single universal curve for each sample.
M.R. Said, Y.A. Hamam, I. Abu-Aljarayesh
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Magnetic entropy-change in La0.67−xBixCa0.33MnO3 compound

Journal of Magnetism and Magnetic Materials, 2006
Abstract Bi doped lanthanum manganites with the chemical composition of La0.67−xBixCa0.33MnO3 ( x = 0 , 0.05, 0.1, 0.2) were prepared by the standard solid-state process. The Curie temperatures were measured to be 267 K for x = 0 , 248 K for x = 0.05 , 244 K for x = 0.1 and 229 K for x = 0.2 samples.
S. Atalay, V.S. Kolat, H. Gencer, H.I. Adiguzel   +3 more
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Magnetic entropy change in LaMn2−xFexSi2 compounds

Physica B: Condensed Matter, 2006
Abstract LaMn 2− x Fe x Si 2 ( x = 0 , 0.05, 0.10, 0.15, 0.20) compounds were prepared by arc melting. The crystal structure and magnetic properties have been investigated by X-ray diffraction and by using a vibrating sample magnetometer, respectively.
Tiebang Zhang, Yungui Chen, Yongbai Tang, Mingjing Tu   +3 more
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Large magnetic entropy changes in NdFe12B6 compound

Applied Physics Letters, 2006
Magnetic entropy changes of the NdFe12B6 compound, which was crystallized from amorphous as-quenched ribbons, were investigated. Differential thermal analysis shows that it is stable below 940K. An abrupt change of magnetization was observed around its Curie temperature of 218K. The maximum values of magnetic entropy change of this compound are 8.4 and
C. L. Zhang, D. H. Wang, Z. D. Han, S. L. Tang, B. X. Gu, Y. W. Du   +5 more
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Magnetic entropy change in Ni50.1Mn20.7Ga29.6 single crystal

Journal of Applied Physics, 2001
Magnetic entropy change (ΔS) of a single crystal Ni50.1Mn20.7Ga29.6 alloy under different applied fields has been investigated near the martensitic–austenitic structural transition temperature of 219 K. With increasing applied field from 0.2 to 5 T, the sign of ΔS changes from positive to negative.
Feng-xia Hu, Ji-rong Sun, Guang-heng Wu, Bao-gen Shen   +3 more
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The magnetic entropy change on amorphous FeMnZr alloys

Journal of Magnetism and Magnetic Materials, 2007
Abstract The magnetization behaviors have been measured for amorphous Fe 90 - x Mn x Zr 10 ( x = 0 , 4 , 6 ) alloys. The Curie temperature is decreased from 243 to 218 K with increasing Mn concentration ( x = 0 –6). The magnetization measurements were conducted at temperatures above the Curie temperature
S.G. Min, K.S. Kim, S.C. Yu, Y.C. Kim, K.Y. Kim, K.W. Lee, J.R. Rhee, S.Y. Cha, Y.S. Kim   +8 more
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Large magnetic entropy change in nanocrystalline Pr0.7Sr0.3MnO3

Journal of Applied Physics, 2010
Nanocrystalline Pr0.7Sr0.3MnO3 sample has been prepared by sol-gel method. The room temperature powder x-ray diffraction data show single phase nature of the sample and confirm the cubic crystal structure with Fm3¯m space group. The average crystallite size is calculated using Scherrer formula, and it is found to be ∼25 nm.
Rabindra Nath Mahato, K. Sethupathi, V. Sankaranarayanan, R. Nirmala   +3 more
openaire   +1 more source