Magnetic Order–Order Transition in Tetragonal ErB2C2
Magnetic Order–Order Transition in Tetragonal ErB2C2
复制标题
四方 ErB2C2 中的磁序-序转变
DOI：
10.1143/jpsj.71.1746
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发表时间：
2002
影响因子：
1.7
通讯作者：
Y. Yamaguchi
中科院分区：
文献类型：
--
作者：
K. Ohoyama;Kentaro Indoh;A. Tobo;H. Onodera;Y. Yamaguchi
通过磁化和中子衍射测量，研究了反铁四极有序材料dyb2c_2和hob2c_2的同构化合物erb2c_2的磁性能。在t_n = 15.9 K和t_t = 13.0 K时，erb2 c2表现出磁跃迁。基态的磁结构为简单的ising型反铁磁结构，传播矢量k =(1,0,0)。在零磁场条件下，T N和T T之间的中间相位是一个具有横向正弦调制的长程磁有序态，其传播矢量为（1+δ, δ, 0），其中δ=0.1120(2)，与hob2c2中的第四相几乎相同。
We have investigated magnetic properties of ErB 2 C 2 which is an isostructural compound of the antiferroquadrupolar ordering materials, DyB 2 C 2 and HoB 2 C 2 , by magnetisation and neutron diffraction measurements. ErB 2 C 2 shows magnetic transitions at T N = 15.9 K and T t = 13.0 K. The magnetic structure of the ground state is a simple Ising-type antiferromagnetic one with a propagation vector of k =(1, 0, 0). The intermediate phase between T N and T t under zero magnetic field is a long range magnetic ordered state with a transverse sinusoidal modulation with a propagation vector of (1+δ, δ, 0), where δ=0.1120(2) which is nearly the same as that in phase IV in HoB 2 C 2 .