Title :
Magnetic properties of the ferrimagnetic spinel Co[RhCr]S4
Author :
Plumier, R. ; Sougi, M.
Author_Institution :
Centre d´´Etudes de Saclay, Gif-sur-Yvette, France
fDate :
11/1/1993 12:00:00 AM
Abstract :
Magnetization measurements and neutron diffraction experiments are performed on the normal spinel Co[RhCr]S4. They show the existence of two magnetic transitions. Up to Tc=125 K, this compound displays a triangular configuration, in which the Co 2+ moments lying on the two FCC tetrahedral sites of the spinel structure have opposite transverse components in addition to the longitudinal ones which are antiparallel to the Cr3+ moments lying on the octahedral sites. In the range Tc< T<TN (TN=210 K), Co[RhCr]S4 is an antiferromagnet with antiparallel Co2+ moments on the tetrahedral sites and Cr3+ in the paramagnetic state. These results are discussed and found to be satisfactorily explained in the molecular field approximation
Keywords :
Curie temperature; antiferromagnetic properties of substances; cobalt compounds; ferrimagnetic properties of substances; magnetic moments; magnetic transitions; magnetisation; neutron diffraction examination of materials; 4.2 to 250 K; CoRhCrS4 ferrimagnetic spinel; FCC tetrahedral sites; magnetic moment; magnetic properties; magnetic transitions; magnetisation; molecular field approximation; neutron diffraction; octahedral sites; paramagnetic state; triangular configuration; Antiferromagnetic materials; Chromium; Diffraction; Displays; FCC; Ferrimagnetic materials; Magnetic properties; Magnetization; Neutrons; Performance evaluation;
Journal_Title :
Magnetics, IEEE Transactions on
