Fermi surface and magnetic properties of antiferromagnet EuBi3

Ai Nakamura, Yuichi Hiranaka, Masato Hedo, Takao Nakama, Yasutomi Tatetsu, Takahiro Maehira, Yasunao Miura, Akinobu Mori, Hiroki Tsutsumi, Yusuke Hirose, Katsuya Mitamura, Kiyohiro Sugiyama, Masayuki Hagiwara, Fuminori Honda, Tetsuya Takeuchi, Yoshinori Haga, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Yoshichika Onuki

研究成果: ジャーナルへの寄稿学術誌査読

17 被引用数 (Scopus)


EuBi3 with the AuCu3-type cubic structure is known to be a Eu-divalent antiferromagnet with the Néel temperature TN ∼ 7:5 K. We succeeded in growing a high-quality single crystal by the Bi self-flux method. The magnetization at 1.3K for the magnetic field along the h100i direction increases linearly as a function of magnetic field, and saturates at a critical field Hc = 225 kOe, reaching a saturated magnetic moment of 7μB/Eu. Hc is well explained by the magnetic exchange interaction based on a two-sublattice model, using the simple relation Hc = (kB/3μB)(TN- θp) namely, Hc [kOe= 4:9 (TN - θp) [K], where θp is the paramagnetic Curie temperature θp = -36 K. The present antiferromagnetic state is found to be stable under pressures up to 8 GPa, where the Néel temperature increases with increasing pressure, being TN = 16:5K at 8 GPa. From the results of de Haas-van Alphen experiments on EuBiT3 and energy band calculations for the non-4f reference compound SrBi3, the Fermi surface is found to consist of three types of nearly spherical Fermi surfaces.

ジャーナルjournal of the physical society of japan
出版ステータス出版済み - 12月 2013

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)


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