Journal
PHYSICAL REVIEW B
Volume 84, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.064302
Keywords
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Funding
- Helmholtz University Young Investigator Group
- Fonds National de la Recherche Scientifique, Belgium [9.456595, 1.5.064.05]
- National Science Foundation [DMR 0907049]
- ONR [N00014-07-1-0358]
- Army Research Laboratory [W911NF-07-2-0083]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [847970] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0907049] Funding Source: National Science Foundation
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Thin films of FeSb3 were characterized by electronic transport, magnetometry, x-ray diffraction, Fe-57 and Sb-121 nuclear inelastic scattering, and Fe-57 Mossbauer 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) mu(B), respectively. A systematic comparison of the lattice dynamics with CoSb3 and EuFe4Sb12 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.
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