Accession Number : AD0478184

Title :   LOW MAGNETIC SATURATION GARNETS.

Descriptive Note : Quarterly progress rept. no. 3, 1 Aug-31 Oct 65,

Corporate Author : SPERRY MICROWAVE ELECTRONICS CO CLEARWATER FLA

Personal Author(s) : Wilson ,W. R.

Report Date : FEB 1966

Pagination or Media Count : 23

Abstract : BiCaVIG single crystals was grown to 3/4-in. in size. A substantial reduction in dendritic growth of the crystals was achieved by using prolonged temperature soak periods. Reductions in linewidths of up to 31% were accomplished by heat treatment of polished spheres of BiCaVIG to 1050 degrees for 10 minutes. Small single crystals of YCaVIG were grown. Polycrystalline single phase samples were prepared of Bi sub 3-2yCa sub 2yV sub yFE sub 5-yO12 for y = 1.1, 1.2 and 1.4, and Y sub 3-2xCa sub 2xV sub xFe sub 5-xO12 for x = 1.2. The loss tangents at X-Band for all single phase materials were measured to be less than 0.0001. The process used for preparing single phase material is described. Linewidth, 4 pi M sub s, and g factor are presented for all materials prepared this quarter. Photomicrographs of single phase and polyphase materials are also shown. (Author)

Descriptors :   (*GARNET, MAGNETIC PROPERTIES), SINGLE CRYSTALS, HEAT TREATMENT, BISMUTH COMPOUNDS, CALCIUM COMPOUNDS, VANADIUM COMPOUNDS, IRON COMPOUNDS, YTTRIUM COMPOUNDS, MICROWAVES, CRYSTAL DEFECTS, CRYSTAL GROWTH, DENSITY, MEASUREMENT, X RAY DIFFRACTION, MICROSTRUCTURE, MECHANICAL PROPERTIES, SOLUBILITY, DIELECTRIC PROPERTIES, X BAND

Subject Categories : Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE