Evidence of antiferroquadrupolar ordering of DyB2C2
Evidence of antiferroquadrupolar ordering of DyB2C2
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DyB2C2 反铁四极有序的证据
DOI：
10.1088/0953-8984/11/44/102
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Y. Yamaguchi
中科院分区：
文献类型：
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作者：
Yoshikazu Tanaka;T. Inami;Tetsuya Nakamura;H. Yamauchi;H. Onodera;K. Ohoyama;Y. Yamaguchi
用X射线共振散射技术研究了DyB_2C_2中的反铁四极有序。测量了两个超晶格峰的强度与温度、方位角和入射X射线能量的关系。结果表明，在TQ = 25 K以下存在反铁四极有序，并伴随着结构相变。提出了传播矢量为（0，0，1/2）和（0，1，1/2）的反铁四极有序的结构模型。
The antiferroquadrupolar ordering in DyB2C2 has been investigated using the x-ray resonant scattering technique. The dependence of the intensities of two superlattice peaks on temperature, azimuthal angle, and energy of the incident x-rays was measured. The results show that the antiferroquadrupole ordering, which accompanies a structural phase transition, exists below TQ = 25 K. A structural model for the antiferroquadrupole ordering, for which the propagation vectors are (0,0,1/2) and (0,1,1/2), is presented.