LOCALIZED F-ELECTRON ANTIFERROMAGNETISM, HEAVY-FERMION BEHAVIOR AND MIXED-VALENCE IN CE3AU3SB4, CE3PT3SB4 AND RELATED-COMPOUNDS

被引：18

作者：

KATOH, K ^{[1
]}

KASAYA, M ^{[1
]}

机构：

[1] TOHOKU UNIV, FAC SCI, DEPT PHYS, SENDAI, MIYAGI 980, JAPAN

来源：

PHYSICA B-CONDENSED MATTER | 1993年 / 186-88卷

关键词：

D O I：

10.1016/0921-4526(93)90594-V

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The valences of rare earth ions in R3Au3Sb4 are well defined to be 3+, giving rise to semiconducting properties for R = La, Ce, Pr and semi-metallic properties for R = Sm, Gd. Ce3Au3Sb4 shows no magnetic order down to 1.5 K and C/T is 2500 mJ/mol K2 at 1.5 K. Sm3Au3Sb4 and Gd3Au3Sb4 are antiferromagnets with a T(N) of 2 and 11 K, respectively. Ce3Pt3Sb4 is a mixed-valent compound. The semiconducting properties in Ce3Au3Sb4, Ce3Pt3Sb4 and their alloys suggest strongly that the origin of an energy gap in Ce3Pt3Sb4 is a band gap.

引用

页码：428 / 430

页数：3