Investigation of ferromagnetic filled skutterudite compounds EuT 4Sb12 (T = Fe, Ru, Os)

Author(s)
Eric D Bauer, Andrzej Slebarski, Neil A. Frederick, William M. Yuhasz, M. Brian Maple, Deliang Cao, Frank Bridges, Gerald Giester, Peter Franz Rogl
Abstract

The physical properties of single crystals of filled skutterudite compounds EuT4Sb12(T = Fe, Ru, Os) have been investigated by means of x-ray diffraction, electrical resistivity, specific heat, magnetization, and x-ray absorption spectroscopy measurements. The Eu-based materials crystallize in the LaFe4P12-type structure (space group Im3¯). A small Eu deficiency is encountered for Eu0.95Fe4Sb 12, while the homologous compounds, Eu1.0Ru 4Sb12 and Eu1.0Os 4Sb12, reveal full occupancy of the Eu site. Eu0.95Fe4Sb 12 appears to exhibit either canted ferromagnetic or ferrimagnetic order at TC = 88 K whereas EuRu4Sb12 and EuOs4Sb12 are ferromagnets with Curie temperatures of TC = 4 and 9 K, respectively. X-ray absorption near edge spectroscopy measurements reveal a nearly divalent Eu electronic configuration for EuT 4Sb12 (T = Fe, Ru, Os) with no significant change with T atom or temperature.

Organisation(s)
Department of Mineralogy and Crystallography, Department of Physical Chemistry
External organisation(s)
University of Silesia in Katowice, University of California, San Diego, Southern Illinois University, Carbondale, University of California, Santa Cruz
Journal
Journal of Physics: Condensed Matter
Volume
16
Pages
5095-5107
No. of pages
13
ISSN
0953-8984
Publication date
2004
Peer reviewed
Yes
Austrian Fields of Science 2012
1051 Geology, Mineralogy
Portal url
https://ucrisportal.univie.ac.at/en/publications/d2a73850-4571-4bdb-a3f5-65ff922b0f5a