SPIN WAVES IN ORDERED FE3SI FE3A1 FERROMAGNETIC ALLOYS IN HEISENBERG MODEL

被引：8

作者：

LEONI, F

NATOLI, C

机构：

[1] Laboratorio di Fisica Nucleare Applicata, Centro Studi Nucleari della Casaccia del Comitato Nazionale per l'Energia Nucleare, Roma

来源：

PHYSICA | 1969年 / 40卷 / 04期

关键词：

D O I：

10.1016/0031-8914(69)90202-X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dispersion law for spin-wave excitations is studied in Fe3Si and Fe3Al ordered ferromagnetic alloys by using the Heisenberg model and in the non-interacting spin wave approximation. An explicit expression of the dispersion relation is given for small k vectors (|k| « 1/a) and for the principal point and lines of symmetry in the Brillouin zone. We write down explicitly the symmetry properties of the spin-wave states in these cases and show their usefulness when considering neutron scattering by spin waves in these alloys. © 1969.

引用

页码：553 / &

共 8 条

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