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Accession Number:
AD0670013
Title:
COMPUTER STUDY OF SUBSIDIARY RESONANCE PHENOMENA IN MICROWAVE MAGNETIC MATERIALS
Corporate Author:
ARMY ELECTRONICS COMMAND FORT MONMOUTHNJ
Report Date:
1968-05-01
Abstract:
A computer study at X-band frequencies of the threshold fields for subsidiary resonance phenomena in a wide range of magnetic materials has been conducted. The variation of the critical power for spin-wave excitation has been determined as a function of the material parameters combined with the geometry of the ferrite material. The investigation has shown that, at a given frequency, low-level operation of microwave devices that utilize subsidiary resonance absorption requires a material with a very narrow spin-wave linewidth and a saturation magnetization in the order of 5000 gauss. The optimum material geometry that yields the lowest threshold is the case where the demagnetizing factor N sub z 0, where z represents the direction of the applied dc field, and the transverse demagnetizing factors N sub x and N sub y are equal to 0.5. Author
Descriptive Note:
Research and development technical rept.
Supplementary Note:
DOI: 10.21236/AD0670013
Pages:
0019
File Size:
0.62MB
