TY - JOUR
T1 - Magnetocaloric Effect and Magnetoresistance Due to Itinerant Electron Metamagnetic Transition in Co(S1-xSex)2
AU - Wada, Hirofumi
AU - Kawasaki, Daichi
AU - Maekawa, Yoshiro
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2014/6/1
Y1 - 2014/6/1
N2 - The Co(S1-xSex)2 compounds with the cubic Pyrite structure show itinerant electron metamagnetism for 0.12≤ x. We studied the magnetocaloric effect and magnetoresistance (MR) of this system. It was found that a substantial magnetic entropy change was obtained for Co(S0.88Se0.12)2, which has a paramagnetic ground state. We observed giant positive MR associated with the itinerant electron metamagnetic transition for Co(S1-xSex)2. The magnitude of the MR jump is independent of temperature and concentration for 0.13≤ x≤ 0.15. These results are discussed in terms of a simple band structure of CoS2, in which high-spin polarization is realized in a ferromagnetic state.
AB - The Co(S1-xSex)2 compounds with the cubic Pyrite structure show itinerant electron metamagnetism for 0.12≤ x. We studied the magnetocaloric effect and magnetoresistance (MR) of this system. It was found that a substantial magnetic entropy change was obtained for Co(S0.88Se0.12)2, which has a paramagnetic ground state. We observed giant positive MR associated with the itinerant electron metamagnetic transition for Co(S1-xSex)2. The magnitude of the MR jump is independent of temperature and concentration for 0.13≤ x≤ 0.15. These results are discussed in terms of a simple band structure of CoS2, in which high-spin polarization is realized in a ferromagnetic state.
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U2 - 10.1109/TMAG.2014.2303818
DO - 10.1109/TMAG.2014.2303818
M3 - Article
AN - SCOPUS:84957592679
SN - 0018-9464
VL - 50
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 6
M1 - 6736118
ER -