Magnetic resonance on LiCuVO4

被引：28

作者：

Kegler, C ^{[1
]}

Büttgen, N

von Nidda, HAK

Krimmel, A

Svistov, L

Kochelaev, BI

Loidl, A

Prokofiev, A

Assmus, W

机构：

[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

[2] Goethe Univ Frankfurt, Inst Phys, D-60054 Frankfurt, Germany

来源：

EUROPEAN PHYSICAL JOURNAL B | 2001年 / 22卷 / 03期

关键词：

75.30.-m Intrinsic properties of magnetically ordered materials; 76.30.Fc Iron group (3d) ions and impurities (Ti-Cu); 76.60.Es Relaxation effects;

D O I：

10.1007/s100510170109

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

EPR and Li-7 NMR measurements were performed in the distorted inverse spinel V(LiCu)O-4 down to 1.5 K. Anisotropy effects on magnetic resonance spectra due to the Jahn-Teller distortion of the oxygen octahedra surrounding the copper ions are discussed. The estimation of the spin-spin interactions deduced from the EPR-relaxation rate DeltaH reveals a situation comparable to the prototypical one-dimensional S = 1/2 Heisenberg antiferromagnet CuGeO3. Approaching three-dimensional antiferromagnetic order (T-N approximate to 2 K) from above, both magnetic relaxation rates, DeltaH(EPR) and (7)(1 /T-1), respectively, exhibit nearly the same critical divergence reminding to the onset of three-dimensional order in two-dimensional layered systems.

引用

页码：321 / 326

页数：6

共 16 条

[1]

BENNER H, 1990, MAGNETIC PROPERTIES, P368

[2] ANTIFERROMAGNETISM OF SPINEL LICUVO4 [J].