| タイトル | Theory of disordered Heisenberg ferromagnets |
| 本文（外部サイト） | http://hdl.handle.net/2060/19730015047 |
| 著者（英） | Stubbs, R. M. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1973-05-01 |
| 言語 | eng |
| 内容記述 | A Green's function technique is used to calculate the magnetic properties of Heisenberg ferromagnets in which the exchange interactions deviate randomly in strength from the mean interaction. Systems of sc, bcc, and fcc topologies and of general spin values are treated. Disorder produces marked effects in the density of spin wave states, in the form of enhancement of the low-energy density and extension of the energy band to higher values. The spontaneous magnetization and the Curie temperature decrease with increasing disorder. The effects of disorder are shown to be more pronounced in the ferromagnetic than in the paramagnetic phase. |
| NASA分類 | PHYSICS, SOLID-STATE |
| レポートNO | 73N23774
E-6936
NASA-TN-D-7208 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/199228 |
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