Mossbauer effect studies of filled skutterudite compounds

Author

Kitagawa, H. ; Kondo, S. ; Oda, K. ; Hasaka, M. ; Morimura, T.

Author_Institution

Fac. of Eng., Nagasaki Univ., Japan

fYear

1998

fDate

24-28 May 1998

Firstpage

319

Lastpage

322

Abstract

Mossbauer spectra of filled skutterudite compound of LaFe₄Sb₁₂, La_1.71Fe₄Sb₁₂, CeFe₄Sb₁₂ and Ce_1.71Fe₄Sb ₁₂ are measured in order to investigate the hyperfine state of iron atoms. Iron atoms in these compounds are in para-magnetic states and quadrupole splitting (Q.S) differs between LaFe₄Sb₁₂ and CeFe₄Sb₁₂ specimens whereas, no difference was observed in isomer shifts (I.S). Due to calculations, it is proposed that the difference in Q.S is attributed to the difference in the density of state at Fermi surface

Keywords

Mossbauer effect; cerium compounds; iron compounds; isomer shift; lanthanum compounds; paramagnetic materials; Ce_1.71Fe₄Sb₁₂; CeFe₄Sb₁₂; Fermi surface; La_1.71Fe₄Sb₁₂; LaFe₄Sb₁₂; Mossbauer effect; filled skutterudite compounds; hyperfine state; isomer shifts; para-magnetic states; quadrupole splitting; Argon; Atomic measurements; Iron; Magnetic properties; Paramagnetic materials; Spectroscopy; Thermal conductivity; Thermoelectric devices; Thermoelectricity; X-ray diffraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermoelectrics, 1998. Proceedings ICT 98. XVII International Conference on

Conference_Location

Nagoya

ISSN

1094-2734

Print_ISBN

0-7803-4907-5

Type

conf

DOI

10.1109/ICT.1998.740384

Filename

740384