Accession Number : AD0732782

Title :   Critical Magnetic Properties of Europium Iron Garnet.

Descriptive Note : Technical rept.,

Corporate Author : CLARKSON COLL OF TECHNOLOGY POTSDAM N Y DEPT OF PHYSICS

Personal Author(s) : Stelmach,A. A. ; Anderson,Elmer E. ; Arajs,Sigurds ; Tehan,B. L.

Report Date : 01 NOV 1971

Pagination or Media Count : 31

Abstract : The critical magnetic properties of europium iron garnet (EuIG) have been studied in the vicinity of the Neel temperature. The sample used in this study was a single crystal grown by the flux method. Magnetic measurements were made by utilizing the kink-point method for a spherical specimen in conjunction with a vibrating sample magnetometer. The critical exponents beta, delta, and gamma were determined and compared with the scaling equation, beta(delta-1)=gamma. An analysis was made in order to confirm the scaling prediction that the reduced magnetic field has a functional form which is dependent only upon the reduced magnetization. A test of the validity of the value for the Neel temperature, obtained by plotting applied magnetic field as a function of break-point temperature, has been made by application of the Kouvel-Fisher method. (Author)

Descriptors :   (*GARNET, MAGNETIC PROPERTIES), EUROPIUM COMPOUNDS, FERRATES, TRANSITION TEMPERATURE, SINGLE CRYSTALS, MAGNETOMETERS

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE