Spin wave stiffness constants in some ferrimagnetics
Spin wave stiffness constants in some ferrimagnetics
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DOI：
10.1088/0022-3719/20/8/013
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发表时间：
1987-03
期刊：
影响因子：
--
通讯作者：
C. Srivastava;R. Aiyar
中科院分区：
文献类型：
--
作者：
C. Srivastava;R. Aiyar
自旋波刚度参数的大小。研究了YIG、Fe_3O_4和Li-Zn铁氧体的D及其与温度的关系，并与理论进行了比较。结果表明，使用交换常数，令人满意地解释这些系统的平衡磁性能得到的D值与YIG和Fe 3 O 4的实验结果一致，但不适合的锂锌铁氧体。根据声磁振子与光磁振子的相互作用，满意地解释了YIG和Fe_3 O_4中D的温度依赖性。
The magnitude of the spin wave stiffness parameter. D and its dependence on temperature in YIG, Fe3O4 and Li-Zn ferrite has been examined and compared with theory. It is shown that values of D obtained using the exchange constants that satisfactorily explain the equilibrium magnetic properties of these systems yield results in agreement with experiment for YIG and Fe3O4 but are inappropriate for the Li-Zn ferrite. The temperature dependence of D in YIG and Fe3O4 is satisfactorily explained on the basis of the interaction of acoustic magnons with optic magnons.