APPLICATION OF A LAYERED TRIANGULAR-LATTICE MAGNETIC MODEL SYSTEM TO LINIO2

被引：28

作者：

GANGULY, P ^{[1
]}

RAMASWAMY, V ^{[1
]}

MULLA, IS ^{[1
]}

SHINDE, RF ^{[1
]}

BAKARE, PP ^{[1
]}

GANAPATHY, S ^{[1
]}

RAJAMOHANAN, PR ^{[1
]}

PRAKASH, NVK ^{[1
]}

机构：

[1] NATL CHEM LAB,DIV PHYS CHEM,POONA 411008,MAHARASHTRA,INDIA

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.46.11595

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic susceptibility of LiNiO2 can be described by a high-temperature Curie-Weiss law that is typical of ferromagnets but without spontaneous magnetization at low temperatures. We find that some of the ESR features of LiNiO2 below 40 K which were earlier attributed to a quantum spin-liquid state are present at higher temperatures around 240 K in Li0.3Ni0.7O. This behavior is typical of superparamagnetic domains. The magnitude of the Li-7 NMR anisotropic paramagnetic dipolar shift in La2Li0.5Ni0.5O4 and LiNiO2 suggests that the moment is localized predominantly on Ni ions. Arguments are presented to suggest that the systematics are consistent with the predominant creation of holes on Ni on the substitution of Ni by Li in NiO. The same conclusion is drawn from the ESR studies.

引用

页码：11595 / 11600

页数：6

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