Magnetization Process in GdB4
| Autor: | K Suga, Koichi Kindo, Koichi Katsumata, Akiko Kikkawa, Tomoya Fukui, S. Michimura, Yasuo Narumi, Takashi Sugaya, Fumitoshi Iga |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Journal of the Physical Society of Japan. 76:024711 |
| ISSN: | 1347-4073 0031-9015 |
| Popis: | Magnetization measurements are made on single crystal samples of GdB 4 under static fields up to 14 T and pulsed fields up to ∼60 T. When the external magnetic field, H , is applied along the [110] spin easy axis, the magnetization increases non-linearly at around 12 T, indicating a spin reorientation from the easy axis to the direction perpendicular to H . The values of saturation field, H s , are, H s [110] ≃52 T, H s [100] ≃52 T and H s [001] ≃54 T. We analyze the results based on the two-dimensional model proposed by Shastry and Sutherland [B. S. Shastry and B. Sutherland: Physica B 108 (1981) 1069]. We obtain J 1 / k B =-8.9 K and J 2 / k B =-0.68 K, where, J 1 and J 2 are the diagonal exchange interaction and the exchange interaction along the edges of a square, respectively. |
| Databáze: | OpenAIRE |
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