Highly anisotropic magnetic phase diagram of a 2-dimensional orthogonal dimer system TmB4
Highly anisotropic magnetic phase diagram of a 2-dimensional orthogonal dimer system TmB4
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DOI：
10.1016/j.jmmm.2006.10.476
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发表时间：
2007-03-01
影响因子：
2.7
通讯作者：
Kindo, K.
中科院分区：
文献类型：
--
作者：
Iga, F.;Shigekawa, A.;Kindo, K.
我们测量了Shastry-Sutherland晶格（SSL） TmB4的磁化过程。对于平行于c的B，高原分别出现在1.7-1.4和2-3 T的全力矩7 μ B/Tm的(1)/(8)和(1)/(2)处。对于平行于a的B，在30 T左右发生了一个变磁跃迁，随后在32 T左右出现了一个平台，这些平台是由SSL的几何挫折效应引起的。在T-N = 11.7 K以下，详细测量了磁阻和比热对磁场和温度的依赖关系。磁相图具有复杂的特征，有反铁磁相、自旋翻转饱和相以及由于SSL中受挫效应引起的长周期调制而产生的一些附加相。(c) 2006年Elsevier B.V.出版
We have measured magnetization processes of a Shastry-Sutherland lattice (SSL) TmB4. For B parallel to c, plateaus appear at (1)/(8) and (1)/(2) of the full moment 7 mu B/Tm at 1.7-1.4 and 2-3 T, respectively. For B parallel to a, a metamagnetic transition occurs at similar to 30 T which is followed by a plateau at similar to 32 T. These plateaus are originated from geometric frustration effect in SSL. Magnetic field and temperature dependences of magnetoresistance and specific heat were also measured in detail below T-N = 11.7 K. The magnetic phase diagram possesses complex features which have an antiferromagnetic phase, spin flop saturated one, and a few additional phases by long periodic modulations originated from frustration effect in SSL. (c) 2006 Published by Elsevier B.V.