Field-induced magnetic transitions and pressure-induced magnetic instability in CePdAl
Field-induced magnetic transitions and pressure-induced magnetic instability in CePdAl
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DOI：
10.1016/s0022-3697(02)00112-9
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发表时间：
2002-06-01
影响因子：
4
通讯作者：
Isikawa, Y
中科院分区：
文献类型：
--
作者：
Goto, T;Hane, S;Isikawa, Y
反铁磁 CePdAl 的磁化强度和电阻率是在 0.5 K 下、沿 c 轴高达 10 T 的稳定磁场中测量的。在 B-cl = 3.2 T、B-c2 = 3.4 T 和 B-c3 = 4.0 T 处发现了三个变磁转变，这源于几何挫败。电阻率在第一次和第二次转变之后显示出很大的值。在高达 1.2 GPa 的高压下测量了磁化率、电阻率和比热的温度依赖性。通过施加压力，尼尔温度突然降低并在 P-c = 0.95 GPa 时变为零。在 P-c 附近观察到非费米液体行为，这表明存在临界二维涨落。 (C) 2002 Elsevier Science Ltd. 保留所有权利。
The magnetization and electrical resistivity of antiferromagnetic CePdAl were measured at 0.5 K in steady fields up to 10 T along the c-axis. Three metamagnetic transitions were found at B-cl = 3.2 T, B-c2 = 3.4 T and B-c3 = 4.0 T, which originate from geometrical frustrations. The resistivity shows a large value just after the first and second transitions. The temperature dependences of the susceptibility, resistivity and specific heat were measured under high pressures up to 1.2 GPa. By applying pressure, the Neel temperature is abruptly decreased and becomes zero at P-c = 0.95 GPa. In the vicinity of P-c the non-Fermiliquid behavior is observed, which suggests the existence of critical 2D fluctuations. (C) 2002 Elsevier Science Ltd. All rights reserved.