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Light scattering from surface and bulk thermal magnons in iron and nickel

 

作者: J. R. Sandercock,   W. Wettling,  

 

期刊: Journal of Applied Physics  (AIP Available online 1979)
卷期: Volume 50, issue B11  

页码: 7784-7789

 

ISSN:0021-8979

 

年代: 1979

 

DOI:10.1063/1.326763

 

出版商: AIP

 

数据来源: AIP

 

摘要:

We report on light scattering measurements on thin polycrystalline samples of iron and nickel. Both the surface and bulk magnons are observed. The measured magnon energies as a function of magnetic field, and of wavevector magnitude and direction, are in good agreement with the calculated values. The predicted exchange induced decay of the surface magnon is observed. In nickel the observed frequencies and linewidths are strongly strain dependent. Oxide layers have an almost negligible effect on the spin wave frequencies in both iron and nickel.

 

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