Accession Number : AD0802832

Title :   RESEARCH ON RELAXATION PROCESSES IN MAGNETIC MATERIALS.

Descriptive Note : Progress rept. no. 9, 1 Jul-30 Sep 66,

Corporate Author : RAYTHEON CO WALTHAM MA RESEARCH DIV

Personal Author(s) : Schlomann, E. ; Kohane, Theodore

Report Date : OCT 1966

Pagination or Media Count : 36

Abstract : A technique for measuring the ferromagnetic absorption curve on comparatively large samples has been developed. Measurements using this technique on rods and spheres of porous, polycrystalline YIG are reported. The magnetization curve of single crystals of Eu3Fe(5-x)GaXO12 (x = 1, 1.2, 1.3) has been measured at room temperature. Above 1 kOe the magnetization increases approximately linearly with magnetic field-strength, with a differential susceptibility of the order of 0.0002. The saturation magnetization increases with increasing Ga content in this range. At room temperature the width of the ferromagnetic resonance line is very large in these materials.

Descriptors :   (*FERROMAGNETIC MATERIALS, RELAXATION TIME), ABSORPTION, YTTRIUM COMPOUNDS, IRON COMPOUNDS, GARNET, MAGNETIC FIELDS, MAGNETIC MATERIALS, SINGLE CRYSTALS, EUROPIUM, IRON, GALLIUM, WAVEGUIDES, RESONANCE, MAGNETOMETERS.

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE