MICROSCOPIC MAGNETIC-PROPERTIES OF V3O7

被引：7

作者：

NISHIHARA, H ^{[1
]}

UEDA, Y ^{[1
]}

KOSUGE, K ^{[1
]}

YASUOKA, H ^{[1
]}

KACHI, S ^{[1
]}

机构：

[1] KYOTO UNIV,FAC SCI,DEPT CHEM,KYOTO 606,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1979年 / 47卷 / 03期

关键词：

D O I：

10.1143/JPSJ.47.790

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nuclear Magnetic Resonance of 51V has been investigated in both the antiferromagnetic and the paramagnetic states of V3O7. Two signals associated with magnetic V4+(3d1) sites have hyperfine fields (HN) of —199.8 and —208.7(±0.3) kOe at 1.25 K which are dominated by intra-ionic dipolar field. The temperature dependence of HN was well described by an equation HN = HN0 (1 — AT2) with A =(16.0 ±0.5) ×10-3 (K-2) in the range 1.32≤T ≤2.22(K). Three signals from V5+ sites were also observed. Magnetic susceptibility at high and low field behaves differently below the Néel temperature of 5 K. These results together with the convex curve of magnetization versus field in the paramagnetic state are discussed in terms of the insulating low-dimensional magnetic system with small anisotropy energy and predominant ferromagnetic interaction along linear chains. © 1979, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

引用

页码：790 / 796

页数：7

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