THE EFFECT OF THE HEAT-TREATMENTS ON THE ANTIFERROMAGNETISM IN LA2CUO4-DELTA SINGLE-CRYSTALS

被引：110

作者：

YAMADA, K ^{[1
]}

KUDO, E ^{[1
]}

ENDOH, Y ^{[1
]}

HIDAKA, Y ^{[1
]}

ODA, M ^{[1
]}

SUZUKI, M ^{[1
]}

MURAKAMI, T ^{[1
]}

机构：

[1] NIPPON TELEGRAPH & TEL PUBL CORP, ELECT COMMUN LABS, 162 TOKAI, IBARAKI 31911, JAPAN

来源：

SOLID STATE COMMUNICATIONS | 1987年 / 64卷 / 05期

关键词：

CRYSTALS - Heat Treatment - LANTHANUM COMPOUNDS - Thermal Effects - NEUTRONS - Diffraction;

D O I：

10.1016/0038-1098(87)90693-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Neutron diffraction and magnetic susceptibility measurements revealed antiferromagnetic order in single crystals of La//2CuO//4 where both sublattice moments (M//s/Cu) and Neel temperatures (T//N) strongly depend on heat treatments. Deoxidization enhances M//s and T//N (M//s equals 0. 6 plus or minus 0. 05 mu //B: T//N equals 298 plus or minus 5K), whereas oxidization reduces these values (M//s equals 0. 22 plus or minus 0. 04 mu //B:T//N equals 135 plus or minus 20K) from those of as-grown crystal (M//s equals 0. 38 plus or minus 0. 05 mu //B:T//N equals 230 plus or minus 10K). A broad peak in the temperature dependence of magnetic susceptibility near T//N with the field paralell to the c-axis (a less than b less than c) is also enhanced in deoxidized crystal.

引用

页码：753 / 756

页数：4

共 19 条

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