TY - JOUR
T1 - Magnetic and fermi surface properties of ferromagnets EuPd2and EuPt2
AU - Nakamura, Ai
AU - Akamine, Hiromu
AU - Ashitomi, Yousuke
AU - Honda, Fuminori
AU - Aoki, Dai
AU - Takeuchi, Tetsuya
AU - Matsubayashi, Kazuyuki
AU - Uwatoko, Yoshiya
AU - Tatetsu, Yasutomi
AU - Maehira, Takahiro
AU - Hedo, Masato
AU - Nakama, Takao
AU - Nuki, Yoshichika O.
N1 - Publisher Copyright:
©2016 The Physical Society of Japan.
PY - 2016/8/15
Y1 - 2016/8/15
N2 - We succeeded in growing single crystals of the ferromagnets EuPd2 and EuPt2 with the Laves-type cubic structure by the Bridgman method, namely, heating constituting materials in a Mo crucible up to a high temperature of about 1500 ° C. The ferromagnetic properties of EuPd2 and EuPt2 with Curie temperatures of 74 and 100 K, respectively, were confirmed from the results of electrical resistivity, specific heat, and magnetization measurements. The ordered moment is 7 μB =Eu, revealing the Eu-divalent ferromagnetism. The present Eu-divalent electronic state is found to be robust against high pressures of up to 8 GPa and is not changed into the Eu-trivalent state. We also carried out de Haas-van Alphen (dHvA) experiments for EuPd2 . The detected dHvA branches in EuPd2 are well explained by the relativistic linearized augmented plane wave (RLAPW) energy band calculations for SrPd2 , revealing a closed hole Fermi surface and compensated four closed electron Fermi surfaces.
AB - We succeeded in growing single crystals of the ferromagnets EuPd2 and EuPt2 with the Laves-type cubic structure by the Bridgman method, namely, heating constituting materials in a Mo crucible up to a high temperature of about 1500 ° C. The ferromagnetic properties of EuPd2 and EuPt2 with Curie temperatures of 74 and 100 K, respectively, were confirmed from the results of electrical resistivity, specific heat, and magnetization measurements. The ordered moment is 7 μB =Eu, revealing the Eu-divalent ferromagnetism. The present Eu-divalent electronic state is found to be robust against high pressures of up to 8 GPa and is not changed into the Eu-trivalent state. We also carried out de Haas-van Alphen (dHvA) experiments for EuPd2 . The detected dHvA branches in EuPd2 are well explained by the relativistic linearized augmented plane wave (RLAPW) energy band calculations for SrPd2 , revealing a closed hole Fermi surface and compensated four closed electron Fermi surfaces.
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U2 - 10.7566/JPSJ.85.084705
DO - 10.7566/JPSJ.85.084705
M3 - Article
AN - SCOPUS:84982702263
SN - 0031-9015
VL - 85
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 8
M1 - 084705
ER -