Tunable thermal expansion behavior in the intermetallic YbGaGe

F. R. Drymiotis, Yongjae Lee, G. Lawes, J. C. Lashley, T. Kimura, S. M. Shapiro, A. Migliori, V. Correa, R. A. Fisher

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We investigate the effects of carbon and boron doping on the thermal expansion of the hexagonal (P 63 mmc) intermetallic YbGaGe. X-ray powder diffraction was used to measure the lattice constants on pure and doped (C or B at nominal levels of 0.5%) samples from T∼10 K to T∼300 K. Also measured were resistivity, specific heat, and magnetic susceptibility. While the pure YbGaGe samples exhibit positive thermal volume expansion, (V300 K - V10 K). V300 K =0.94, the volume expansion in the lightly C- or B-doped samples changes slope and tends toward zero-volume expansion. Such a strong response to light doping suggests that the underlying mechanism for the reported zero-volume expansion is substitutional disorder, and not the previously proposed valence fluctuations.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number17
DOIs
Publication statusPublished - 2005 Dec 1

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Intermetallics
Thermal expansion
intermetallics
thermal expansion
expansion
Doping (additives)
Boron
Magnetic susceptibility
X ray powder diffraction
Lattice constants
Specific heat
boron
Carbon
specific heat
disorders
slopes
valence
magnetic permeability
electrical resistivity
carbon

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Drymiotis, F. R. ; Lee, Yongjae ; Lawes, G. ; Lashley, J. C. ; Kimura, T. ; Shapiro, S. M. ; Migliori, A. ; Correa, V. ; Fisher, R. A. / Tunable thermal expansion behavior in the intermetallic YbGaGe. In: Physical Review B - Condensed Matter and Materials Physics. 2005 ; Vol. 71, No. 17.
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Drymiotis, FR, Lee, Y, Lawes, G, Lashley, JC, Kimura, T, Shapiro, SM, Migliori, A, Correa, V & Fisher, RA 2005, 'Tunable thermal expansion behavior in the intermetallic YbGaGe', Physical Review B - Condensed Matter and Materials Physics, vol. 71, no. 17. https://doi.org/10.1103/PhysRevB.71.174304

Tunable thermal expansion behavior in the intermetallic YbGaGe. / Drymiotis, F. R.; Lee, Yongjae; Lawes, G.; Lashley, J. C.; Kimura, T.; Shapiro, S. M.; Migliori, A.; Correa, V.; Fisher, R. A.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 71, No. 17, 01.12.2005.

Research output: Contribution to journalArticle

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T1 - Tunable thermal expansion behavior in the intermetallic YbGaGe

AU - Drymiotis, F. R.

AU - Lee, Yongjae

AU - Lawes, G.

AU - Lashley, J. C.

AU - Kimura, T.

AU - Shapiro, S. M.

AU - Migliori, A.

AU - Correa, V.

AU - Fisher, R. A.

PY - 2005/12/1

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AB - We investigate the effects of carbon and boron doping on the thermal expansion of the hexagonal (P 63 mmc) intermetallic YbGaGe. X-ray powder diffraction was used to measure the lattice constants on pure and doped (C or B at nominal levels of 0.5%) samples from T∼10 K to T∼300 K. Also measured were resistivity, specific heat, and magnetic susceptibility. While the pure YbGaGe samples exhibit positive thermal volume expansion, (V300 K - V10 K). V300 K =0.94, the volume expansion in the lightly C- or B-doped samples changes slope and tends toward zero-volume expansion. Such a strong response to light doping suggests that the underlying mechanism for the reported zero-volume expansion is substitutional disorder, and not the previously proposed valence fluctuations.

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