Magnetocaloric Effect of Co(S1-xSex)2 under High Pressure
作者： Osamu Sadakuni , Akihiro Mituda , Hirofumi Wada
关键词: Thermodynamics 、 High pressure 、 Condensed matter physics 、 Pressure dependence 、 Doping 、 Magnetic refrigeration 、 Materials science 、 Electron 、 Metamagnetism 、 General Physics and Astronomy
摘要: We examined the magnetocaloric effect of Co(S 1- x Se ) 2 , which shows typical itinerant electron metamagnetism, under high pressures up to 1.2 GPa. It was found that magnetic entropy change, Δ S M =0 increases with increasing pressure, while for =0.05 is not sensitive pressure. For =0.08, decreased The temperature dependence calculated on basis spin fluctuation theory metamagnetism. results reproduce experimental – T curves well. pressure C also discussed.
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S. Fujieda, A. Fujita, K. Fukamichi, Y. Yamazaki, Y. Iijima, Giant isotropic magnetostriction of itinerant-electron metamagnetic La(Fe0.88Si0.12)13Hy compounds Applied Physics Letters. ,vol. 79, pp. 653- 655 ,(2001) , 10.1063/1.1388157
H. Wada, Y. Tanabe, Giant magnetocaloric effect of MnAs1−xSbx Applied Physics Letters. ,vol. 79, pp. 3302- 3304 ,(2001) , 10.1063/1.1419048
T. Goto, Y. Shindo, H. Takahashi, S. Ogawa, Magnetic properties of the itinerant metamagnetic system Co ( S 1 − x Se x ) 2 under high magnetic fields and high pressure Physical Review B. ,vol. 56, pp. 14019- 14028 ,(1997) , 10.1103/PHYSREVB.56.14019
H. Wada, A. Mitsuda, K. Tanaka, Magnetic entropy change of itinerant electron metamagnetic system Co(S 1-x Se x ) 2 Physical Review B. ,vol. 74, pp. 214407- ,(2006) , 10.1103/PHYSREVB.74.214407
O. Tegus, E. Brück, K. H. J. Buschow, F. R. de Boer, Transition-metal-based magnetic refrigerants for room-temperature applications Nature. ,vol. 415, pp. 150- 152 ,(2002) , 10.1038/415150A
H. Yamada, Metamagnetic transition and susceptibility maximum in an itinerant-electron system Physical Review B. ,vol. 47, pp. 11211- 11219 ,(1993) , 10.1103/PHYSREVB.47.11211
R.D. McMichael, R.D. Shull, L.J. Swartzendruber, L.H. Bennett, R.E. Watson, Magnetocaloric effect in superparamagnets Journal of Magnetism and Magnetic Materials. ,vol. 111, pp. 29- 33 ,(1992) , 10.1016/0304-8853(92)91049-Y
Kengo Adachi, Masaaki Matsui, Masahiro Kawai, Further Investigations on Magnetic Properties of Co(SxSe1-x)2, (0≤x≤1) Journal of the Physical Society of Japan. ,vol. 46, pp. 1474- 1482 ,(1979) , 10.1143/JPSJ.46.1474
H. Yamada, T. Goto, Itinerant-electron metamagnetism and giant magnetocaloric effect Physical Review B. ,vol. 68, pp. 184417- ,(2003) , 10.1103/PHYSREVB.68.184417
H. Yamada, K. Terao, M. Aoki, Electronic structure and magnetic properties of CoS2 Journal of Magnetism and Magnetic Materials. ,vol. 177, pp. 607- 608 ,(1998) , 10.1016/S0304-8853(97)00384-3