Accession Number : AD0764982

Title :   The Magnetic Phase Transition in FeCl3.

Descriptive Note : Technical rept.,

Corporate Author : CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF PHYSICS

Personal Author(s) : Endoh,Y. ; Skalyo,J. , Jr. ; Oosterhuis,W. T. ; Stampfel,J. P.

Report Date : AUG 1973

Pagination or Media Count : 3

Abstract : Neutron scattering measurements on both polycrystalline and single crystalline FeCl3 were made near the phase transition at liquid helium temperatures. Magnetic scattering in the ordered state is found to be consistent with the spriral structure proposed by Cable et al., in which the wave vector of the spiral is parallel to (1,4,-5,0). The sublattice magnetization within the temperature range from 4.6K to 7.945K is described by (1-T/T(N) to the beta power with beta = 0.158 plus or minus 0.005 and T(N) = 8.060 plus or minus 0.005K, however at 7.98K the magnetization falls nearly to zero from about 50% of its saturation value and displays a hysteresis, thus indicating a first order transition. Critical scattering was observed which indicated a predominantly three dimensional character. (Modified author abstract)

Descriptors :   (*IRON COMPOUNDS, MAGNETIC PROPERTIES), CHLORIDES, CRYOGENICS, PHASE STUDIES, NEUTRON SCATTERING

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE