Abstract
Moessbauer-effect studies and susceptibility measurements have been carried out to characterize the magnetic and structural properties of the Chevrel-phase compound FeMo/sub 6/S/sub 8/. The Moessbauer spectra indicate that a structural phase transition occurs at T/sub 0/approx. =100 K from an ordered form at low temperature to a disordered form of the material at high temperature, accompanied by a hardening of Fe vibrational modes. Susceptibility measurements give average magnetic moments of 1.61..mu../sub B//Fe atom and 1.42..mu../sub B//Fe atom in the regions below and above T/sub 0/, respectively. An antiferromagnetic transition is observed at a temperature T/sub N/approx. =41 K. Moessbauer spectra obtained below T/sub N/ show a distribution of magnetic hyperfine fields which are attributed to Fe atoms being distributed among the crystallographically equivalent sites in the low-temperature structure.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
