Title :
The Effect of Cation Ion Ordering in In- Cr- Sulphur Spinel
Author :
Son, B. ; Kim, S. ; Lee, B. ; Kim, C.
Author_Institution :
Kookmin Univ., Seoul
Abstract :
This paper investigates the magnetic properties of the FeCr2S4 and FeIn2S4 with special emphasis on cation ordering related to the quadrupole interactions. In order to study microscopic interaction mechanism, the Mossbauer spectra of sulphur spinel have been studied. The Neel temperatures were found to be 175 and 15 K for the FeCr2S4 and FeIn2S4, respectively, by Mossbauer spectroscopy. It can be understood as the strength of inter-sublattice exchange interaction Fe2+(A)-S2--Cr3+(B) is stronger than that of the intra-sublattice exchange interaction Fe2+(B)-S2--Fe2+(B).
Keywords :
Mossbauer effect; Neel temperature; chromium compounds; exchange interactions (electron); ferromagnetic materials; indium compounds; iron compounds; quadrupole interactions; FeCr2S4; FeIn2S4; Mossbauer spectra; Mossbauer spectroscopy; Neel temperatures; cation ion ordering; inter-sublattice exchange interaction; intra-sublattice exchange interaction; microscopic interaction; quadrupole interactions; Atomic measurements; Chromium; Colossal magnetoresistance; Iron; Magnetic properties; Metal-insulator structures; Physics; Spectroscopy; Temperature; X-ray diffraction;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.375676
