Elastic properties of the filled and unfilled skutterudite compounds

Y. Nakanishi; T. Fujino; F. Kikuchi; T. Tanizawa; P. Sun; M. Nakamura; G. Yoshino; A. Ochiai; H. Sugawara; D. Kikuchi; H. Sato; M. Yoshizawa

doi:10.1088/1742-6596/92/1/012072

Elastic properties of the filled and unfilled skutterudite compounds

Y. Nakanishi, T. Fujino, F. Kikuchi, T. Tanizawa, P. Sun, M. Nakamura, G. Yoshino, A. Ochiai, H. Sugawara, D. Kikuchi, H. Sato, M. Yoshizawa

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Ultrasonic measurements were made on a single crystal of the unfilled skutterudite compounds RhSb₃ and IrSb₃ and compare with that of the filled skutterudite PrOs₄ Sb₁₂ to elucidate the role of the guest ions Pr. A characteristic increase was observed around 30 K in the temperature dependence of elastic constants (C₁₁-C ₁₂)/2 and C₄₄ which is ascribed to unusual vibration "rattling" of Pr ions in an atomic cage formed by Sb-icosahedron. On the other hand, the elastic constants C₁₁, (C₁₁-C ₁₂)/2 and C₄₄ increase monotonically with decreasing temperature in the case of RhSb₃ and IrSb₃. No such a characteristic increase was observed. These results give us a piece of evidence that the guest ions would play a crucial role for "rattling motion" in filled skutterudite compounds.

Original language	English
Article number	012072
Journal	Journal of Physics: Conference Series
Volume	92
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/92/1/012072
Publication status	Published - 2007 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1088/1742-6596/92/1/012072

Cite this

@article{26810af366e24a50985a753e0127d637,

title = "Elastic properties of the filled and unfilled skutterudite compounds",

abstract = "Ultrasonic measurements were made on a single crystal of the unfilled skutterudite compounds RhSb3 and IrSb3 and compare with that of the filled skutterudite PrOs4 Sb12 to elucidate the role of the guest ions Pr. A characteristic increase was observed around 30 K in the temperature dependence of elastic constants (C11-C 12)/2 and C44 which is ascribed to unusual vibration {"}rattling{"} of Pr ions in an atomic cage formed by Sb-icosahedron. On the other hand, the elastic constants C11, (C11-C 12)/2 and C44 increase monotonically with decreasing temperature in the case of RhSb3 and IrSb3. No such a characteristic increase was observed. These results give us a piece of evidence that the guest ions would play a crucial role for {"}rattling motion{"} in filled skutterudite compounds.",

author = "Y. Nakanishi and T. Fujino and F. Kikuchi and T. Tanizawa and P. Sun and M. Nakamura and G. Yoshino and A. Ochiai and H. Sugawara and D. Kikuchi and H. Sato and M. Yoshizawa",

year = "2007",

month = dec,

day = "1",

doi = "10.1088/1742-6596/92/1/012072",

language = "English",

volume = "92",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - Elastic properties of the filled and unfilled skutterudite compounds

AU - Nakanishi, Y.

AU - Fujino, T.

AU - Kikuchi, F.

AU - Tanizawa, T.

AU - Sun, P.

AU - Nakamura, M.

AU - Yoshino, G.

AU - Ochiai, A.

AU - Sugawara, H.

AU - Kikuchi, D.

AU - Sato, H.

AU - Yoshizawa, M.

PY - 2007/12/1

Y1 - 2007/12/1

N2 - Ultrasonic measurements were made on a single crystal of the unfilled skutterudite compounds RhSb3 and IrSb3 and compare with that of the filled skutterudite PrOs4 Sb12 to elucidate the role of the guest ions Pr. A characteristic increase was observed around 30 K in the temperature dependence of elastic constants (C11-C 12)/2 and C44 which is ascribed to unusual vibration "rattling" of Pr ions in an atomic cage formed by Sb-icosahedron. On the other hand, the elastic constants C11, (C11-C 12)/2 and C44 increase monotonically with decreasing temperature in the case of RhSb3 and IrSb3. No such a characteristic increase was observed. These results give us a piece of evidence that the guest ions would play a crucial role for "rattling motion" in filled skutterudite compounds.

AB - Ultrasonic measurements were made on a single crystal of the unfilled skutterudite compounds RhSb3 and IrSb3 and compare with that of the filled skutterudite PrOs4 Sb12 to elucidate the role of the guest ions Pr. A characteristic increase was observed around 30 K in the temperature dependence of elastic constants (C11-C 12)/2 and C44 which is ascribed to unusual vibration "rattling" of Pr ions in an atomic cage formed by Sb-icosahedron. On the other hand, the elastic constants C11, (C11-C 12)/2 and C44 increase monotonically with decreasing temperature in the case of RhSb3 and IrSb3. No such a characteristic increase was observed. These results give us a piece of evidence that the guest ions would play a crucial role for "rattling motion" in filled skutterudite compounds.

UR - http://www.scopus.com/inward/record.url?scp=58149527639&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58149527639&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/92/1/012072

DO - 10.1088/1742-6596/92/1/012072

M3 - Article

AN - SCOPUS:58149527639

SN - 1742-6588

VL - 92

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012072

ER -

Elastic properties of the filled and unfilled skutterudite compounds

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this