Synchrotron X-ray study of filled skutterudites CeFe4Sb 12 and Ce0.8Fe3CoSb12

Wei Liu; Qing Jie; Qiang Li; Zhiqiang Chen; Baosheng Li

doi:10.1016/j.physb.2010.10.011

Synchrotron X-ray study of filled skutterudites CeFe₄Sb ₁₂ and Ce_0.8Fe₃CoSb₁₂

Wei Liu
, Qing Jie
, Qiang Li
, Zhiqiang Chen
, Baosheng Li

Stony Brook University
Brookhaven National Laboratory Condensed Matter Physics and Materials Science Department

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

10 Scopus citations

Abstract

In situ synchrotron X-ray diffraction measurements are carried out on filled skutterudites CeFe₄Sb₁₂ and Ce_0.8Fe ₃CoSb₁₂ up to 32 and 20 GPa, respectively, at room temperature. No phase transformation was observed for both samples in the pressure range. Fitting the pressurevolume data (up to 10 GPa) to the third-order BirchMurnaghan equation of state, the bulk modulus B₀ is determined to be 74(4) GPa, with the pressure derivative B′₀= 7(2) for CeFe₄Sb₁₂, and B₀=71(2) GPa and B′₀=8(2) for Ce_0.8Fe₃CoSb₁₂. The bulk moduli of filled skutterudites CeFe₄Sb₁₂ and Ce_0.8Fe₃CoSb₁₂ in our study are smaller than those from previous studies on unfilled skutterudite CoSb₃. The PV curves of the unfilled skutterudite CoSb₃ and filled skutterudites Ce_yFe_4-xCo_xSb₁₂ showed good agreement, indicating that the Ce filling fraction and the replacement of Fe with Co have little effect on their compression behaviors.

Original language	English
Pages (from-to)	52-55
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	406
Issue number	1
DOIs	https://doi.org/10.1016/j.physb.2010.10.011
State	Published - Jan 11 2011

Keywords

High pressure
Isothermal equation of state
Skutterudite
X-ray diffraction

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title = "Synchrotron X-ray study of filled skutterudites CeFe4Sb 12 and Ce0.8Fe3CoSb12",

abstract = "In situ synchrotron X-ray diffraction measurements are carried out on filled skutterudites CeFe4Sb12 and Ce0.8Fe 3CoSb12 up to 32 and 20 GPa, respectively, at room temperature. No phase transformation was observed for both samples in the pressure range. Fitting the pressurevolume data (up to 10 GPa) to the third-order BirchMurnaghan equation of state, the bulk modulus B0 is determined to be 74(4) GPa, with the pressure derivative B′0= 7(2) for CeFe4Sb12, and B0=71(2) GPa and B′0=8(2) for Ce0.8Fe3CoSb12. The bulk moduli of filled skutterudites CeFe4Sb12 and Ce0.8Fe3CoSb12 in our study are smaller than those from previous studies on unfilled skutterudite CoSb3. The PV curves of the unfilled skutterudite CoSb3 and filled skutterudites CeyFe4-xCoxSb12 showed good agreement, indicating that the Ce filling fraction and the replacement of Fe with Co have little effect on their compression behaviors.",

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author = "Wei Liu and Qing Jie and Qiang Li and Zhiqiang Chen and Baosheng Li",

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doi = "10.1016/j.physb.2010.10.011",

language = "English",

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T1 - Synchrotron X-ray study of filled skutterudites CeFe4Sb 12 and Ce0.8Fe3CoSb12

AU - Liu, Wei

AU - Jie, Qing

AU - Li, Qiang

AU - Chen, Zhiqiang

AU - Li, Baosheng

PY - 2011/1/11

Y1 - 2011/1/11

N2 - In situ synchrotron X-ray diffraction measurements are carried out on filled skutterudites CeFe4Sb12 and Ce0.8Fe 3CoSb12 up to 32 and 20 GPa, respectively, at room temperature. No phase transformation was observed for both samples in the pressure range. Fitting the pressurevolume data (up to 10 GPa) to the third-order BirchMurnaghan equation of state, the bulk modulus B0 is determined to be 74(4) GPa, with the pressure derivative B′0= 7(2) for CeFe4Sb12, and B0=71(2) GPa and B′0=8(2) for Ce0.8Fe3CoSb12. The bulk moduli of filled skutterudites CeFe4Sb12 and Ce0.8Fe3CoSb12 in our study are smaller than those from previous studies on unfilled skutterudite CoSb3. The PV curves of the unfilled skutterudite CoSb3 and filled skutterudites CeyFe4-xCoxSb12 showed good agreement, indicating that the Ce filling fraction and the replacement of Fe with Co have little effect on their compression behaviors.

AB - In situ synchrotron X-ray diffraction measurements are carried out on filled skutterudites CeFe4Sb12 and Ce0.8Fe 3CoSb12 up to 32 and 20 GPa, respectively, at room temperature. No phase transformation was observed for both samples in the pressure range. Fitting the pressurevolume data (up to 10 GPa) to the third-order BirchMurnaghan equation of state, the bulk modulus B0 is determined to be 74(4) GPa, with the pressure derivative B′0= 7(2) for CeFe4Sb12, and B0=71(2) GPa and B′0=8(2) for Ce0.8Fe3CoSb12. The bulk moduli of filled skutterudites CeFe4Sb12 and Ce0.8Fe3CoSb12 in our study are smaller than those from previous studies on unfilled skutterudite CoSb3. The PV curves of the unfilled skutterudite CoSb3 and filled skutterudites CeyFe4-xCoxSb12 showed good agreement, indicating that the Ce filling fraction and the replacement of Fe with Co have little effect on their compression behaviors.

KW - High pressure

KW - Isothermal equation of state

KW - Skutterudite

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/78349312837

U2 - 10.1016/j.physb.2010.10.011

DO - 10.1016/j.physb.2010.10.011

M3 - Article

AN - SCOPUS:78349312837

SN - 0921-4526

VL - 406

SP - 52

EP - 55

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1

ER -

Synchrotron X-ray study of filled skutterudites CeFe₄Sb ₁₂ and Ce_0.8Fe₃CoSb₁₂

Abstract

Keywords

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