题名 |
Spin-Flop Transitions in Co- and Ni-Doped Single Crystals of the Spin-Peierls Cuprate CuGeO3 |
作者 |
P. E. Anderson;J. Z. Liu;R. N. Shelton |
关键词 | |
期刊名称 |
Chinese Journal of Physics |
卷期/出版年月 |
38卷2S期(2000 / 04 / 01) |
页次 |
195 - 204 |
内容语文 |
英文 |
英文摘要 |
The recent discoveries of a spin-Peierls transition in two inorganic oxide compounds permit new studies of this novel magnetic transition through substitutional doping. We report the investigations of nickel and cobalt substitutions on the copper site in copper germanate, CuGeO3. The magnetization and specific heat of single crystal samples are used to explore the effects of doping that give rise to a spin-flop transition. Specifically, we find that the Néel state exhibits a spin-flop transition for either dopant, with a critical field of approximately 1 tesla. Surprisingly, the easy axis in the ordered state for nickel doping is the a-axis. This differs from the c-axis easy axis observed for other dopants, such as Zn, Co and Mn. |
主题分类 |
基礎與應用科學 >
物理 |
被引用次数 |
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