Lattice Dynamics in the FeSb₃ Skutterudite

Author

Anne Möchel
Ilya Sergueev
Ngoc Thanh Nguyen
Gary J. Long, Missouri University of Science and TechnologyFollow
Fernande Grandjean, Missouri University of Science and TechnologyFollow
D. C. Johnson
Raphäel P. Hermann

Abstract

Thin films of FeSb₃ were characterized by electronic transport, magnetometry, x-ray diffraction, 57Fe and 121Sb nuclear inelastic scattering, and 57Fe Mössbauer spectroscopy. Resistivity and magnetometry measurements reveal semiconducting behavior with a 16.3(4) meV band gap and an effective paramagnetic moment of 0.57(6) _B, respectively. A systematic comparison of the lattice dynamics with CoSb₃ and EuFe ₄Sb₁₂ reveals that the Fe₄Sb₁₂ framework is softer than the Co₄Sb₁₂ framework, and that the observed softening and the associated lowering of the lattice thermal conductivity in the RFe₄Sb₁₂ filled skutterudites are not only related to the filler but also to the Fe₄Sb₁₂ framework.

Recommended Citation

A. Möchel et al., "Lattice Dynamics in the FeSb₃ Skutterudite," Physical review B: Condensed matter and materials physics, vol. 84, no. 6, American Physical Society (APS), Aug 2011.

The definitive version is available at https://doi.org/10.1103/PhysRevB.84.064302

Department(s)

Chemistry

International Standard Serial Number (ISSN)

1098-0121

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2011 American Physical Society (APS), All rights reserved.

Publication Date

01 Aug 2011