On the magnetic structure of quasi one dimensional spin 1/2 system of Li2ZrCuO4

被引：17

作者：

Tarui, Yasuko ^{[1
]}

Kobayashi, Yoshiaki ^{[1
]}

Sato, Masatoshi ^{[1
]}

机构：

[1] Nagoya Univ, Dept Phys, Div Sci Mat, Chikusa Ku, Nagoya, Aichi 4648602, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2008年 / 77卷 / 04期

关键词：

Li2ZrCuO4; NMR; incommensurate magnetic structure; helical magnetic order;

D O I：

10.1143/JPSJ.77.043703

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetization and Li-7-NMR measurements have been carried out for an a-axis-aligned sample of Li2ZrCuO4, which has quasi one-dimensional Cu2+ spins (s = 1/2) in chains of edge-sharing CuO4 square planes and exhibits the magnetic transition at temperature T-N similar to 7 K. The NMR results at similar to 2 K indicate that the system has an incommensurate helical order of Cu spins within the ac-plane. Although the feroelectricity is predicted in this ordered state by existing theories developed for a single chain, no anomalies have been observed in the dielectric susceptibility E and electric polarization P for polycrystalline samples.

引用

页数：4

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