UHF Ferrites (Garnets).
Semiannual technical rept. 1 May-31 Dec 71,
RAYTHEON CO WALTHAM MASS RESEARCH DIV
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Two objectives have been defined for the performance of this contract. The first is the development of a low loss temperature stable magnetic garnet for an above resonance microwave UHF circulator. The second is to develop an S-band phase shifter material which would offer some improvement in temperature stability and lower materials cost over presently available ferrites. Dense, single phase garnet has been produced with the composition Y 1.70Ca1.30In.35V.65Fe4.00O12. A survey has been made of the garnet and spinel S-band phase-shifter materials. A processing study has been started on a calcium-vanadium substituted YIG. Compositions with and without manganese substitutions have been prepared to explore the effect on remanent magnetization and stress sensitivity. Author
- Electrical and Electronic Equipment
- Solid State Physics