MAGNETIC-PROPERTIES OF IRON-DOPED LAYER-STRUCTURE DICHALCOGENIDES

被引：24

作者：

HILLENIUS, SJ ^{[1
]}

COLEMAN, RV ^{[1
]}

DOMB, ER ^{[1
]}

SELLMYER, DJ ^{[1
]}

机构：

[1] UNIV NEBRASKA,BEHLEN LAB PHYS,LINCOLN,NE 68588

来源：

PHYSICAL REVIEW B | 1979年 / 19卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.19.4711

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic-susceptibility measurements have been made on dilute excess Fe alloys of the layer-structure crystals TaSe2, NbSe2, and TaS2. The 2H selenides show local-moment formation and obey a Curie-Weiss law in the range 300-30 K with effective moments in the range (2.5-4.5)μB. For 2H-FexTaSe2 a strong susceptibility maximum is observed at low temperature and at low fields the maximum has a cusplike shape characteristic of a spin-glass" type transition. The temperature of the maximum scales approximately linearly with Fe concentration and reaches 13 K for x=0.10. The presence of the magnetic impurities decreases the onset temperature of the charge-density wave and smears the transition. At the same time the magnetic impurities can stabilize a spin-density wave and the data are reviewed in terms of such a possibility. Crystals of 2H-FexTaS2 do not show local-moment formation and the susceptibility measurements show a smearing of the charge-density wave but no depression of the onset temperature up to x=0.05. The Fe-doped 4Hb phases of TaS2 and TaSe2 show distinctly different behavior with 4Hb-FexTaS2 showing a strong-local-moment formation and a susceptibility maximum while 4Hb-FexTaSe2 shows only a weak-local-moment formation and no magnetic anomalies. The susceptibility behavior of the various phases also correlates with magnetic anomalies observed in the transport properties of the Fe-doped layer structures and these correlations will also be reviewed. © 1979 The American Physical Society."

引用

页码：4711 / 4722

页数：12

共 24 条

[11] OSCILLATORY MAGNETOTRANSPORT IN LAYER COMPOUNDS 4HB-TAS2 AND 2H-TASE2 [J].