Accession Number : AD0657240

Title :   LOW MAGNETIC SATURATION GARNETS.

Descriptive Note : Quarterly progress rept. no. 1, 1 Feb-30 Apr 67,

Corporate Author : SPERRY MICROWAVE ELECTRONICS CO CLEARWATER FLA

Personal Author(s) : Wilson,W. R. ; Hodges,L. R. , Jr. ; Rodrigue,G. P. ; Harrison,G. R.

Report Date : AUG 1967

Pagination or Media Count : 33

Abstract : The anisotropy field measured on selected compounds of YCaVIG increased in a linear fashion with decreasing temperature. The room temperature anisotropy fields for YCaVIG materials are considerably higher than the BiCaVIG compounds for an equivalent 4(pi)Ms (at 4(pi)Ms of 530 gauss, 240 oersteds compared to 65 oersteds). Linewidth versus temperature measured for single crystals of YIG, BiCaVIG and BiCaV(Al)IG showed the linewidth to be independent of temperature from -60 to +60C. Remanence ratios (RR) of 0.55 with coercive fields of 3 oersteds were measured on single phase, high density Bi0.4Ca2.6V1.3Fe3.7O12. Materials containing a second phase of Fe2O3 showed a sharp drop in RR(0.55 to 0.38). The operation of a microstrip circulator using BiCaV(Al)IG material is described. (Author)

Descriptors :   (*MICROWAVE EQUIPMENT, MATERIALS), (*VANADIUM COMPOUNDS, GARNET), (*GARNET, MAGNETIC PROPERTIES), MAGNETIC FIELDS, ANISOTROPY, HYSTERESIS, SINGLE CRYSTALS, CRYSTAL GROWTH, MAGNETIC MATERIALS, TRANSMISSION LINES, WAVEGUIDE CIRCULATORS

Subject Categories : Electrical and Electronic Equipment
      Crystallography
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE