MAGNETIC-PROPERTIES AND STRUCTURES OF THE HEXAGONAL HOALGA COMPOUND

被引：19

作者：

GIGNOUX, D ^{[1
]}

SCHMITT, D ^{[1
]}

TAKEUCHI, A ^{[1
]}

ZHANG, FY ^{[1
]}

ROUCHON, C ^{[1
]}

ROUDAUT, E ^{[1
]}

机构：

[1] CEN,DEPT RECH FONDAMENTALE,F-38041 GRENOBLE,FRANCE

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1991年 / 98卷 / 03期

关键词：

D O I：

10.1016/0304-8853(91)90247-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Specific heat and neutron diffraction experiments on polycrystalline samples as well as magnetization measurements on a single crystal of the hexagonal HoAlGa compound are presented. Below T(N) = 31 K, two magnetic phases are present with the Ho moments along c. The low temperature equal moment antiferromagnetic structure characterized by the propagation vectors (1/3, 1/3, 1/2) and (0,0,1/2) transforms, above T(t) = 18.5 K, toward a sine wave modulated structure with an incommensurate propagation vector (1/3,1/3,0.481). Surprisingly at T(t) no anomaly can be detected by specific heat and by susceptibility. Along c, multistep metamagnetic behaviours (three transitions at 1.8 K) are observed from which the H - T phase diagram has been determined.

引用

页码：333 / 340

页数：8

共 13 条

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