NEUTRON-DIFFRACTION STUDY OF QUADRUPOLAR ORDER IN TMTE : FIRST EVIDENCE FOR A FIELD-INDUCED MAGNETIC SUPERSTRUCTURE
NEUTRON-DIFFRACTION STUDY OF QUADRUPOLAR ORDER IN TMTE : FIRST EVIDENCE FOR A FIELD-INDUCED MAGNETIC SUPERSTRUCTURE
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TMTE 中四极有序的中子衍射研究：场致磁性超结构的第一个证据
DOI：
10.1103/physrevlett.80.4779
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发表时间：
1998
影响因子：
8.6
通讯作者：
T. Suzuki
中科院分区：
文献类型：
--
作者：
P. Link;A. Gukasov;J. Mignot;T. Matsumura;T. Suzuki
最近在TmTe中发现了一个有趣的相变，用中子衍射的方法确定了该相变为反铁四极相变。在外加磁场中，底层的有序结构的Tm四极矩的磁偶极矩的反铁磁分量的外观公开。这种诱导结构在磁场方向H_∞（111）和H_∞（001）上都可用波矢k=（1/2，1/2，1/2）来描述，但在前一种情况下，沿着垂直于磁场的二次立方轴取向的交错分量μ AF要强得多（约1.5 μ B）。
The intriguing phase transition discovered recently in TmTe at T Q= 1.8 K is characterized as antiferroquadrupolar by neutron diffraction. In an applied magnetic field, the underlying ordered structure of the Tm quadrupole moments is disclosed by the appearance of an antiferromagnetic component of the magnetic dipole moments. This induced structure is described by the wave vector k=(1/2, 1/2, 1/2) for both field directions H‖(111) and H‖(001), but the staggered component μ AF, oriented along a twofold cubic axis normal to the field, is much stronger (about 1.5 μ B) in the former case.