Pressure and magnetic field effects on the volume anomaly associated with first-order valence change in YbInCu4

J. M. De Teresa; Z. Arnold; A. Del Moral; M. R. Ibarra; J. Kamarád; D. T. Adroja; B. Rainford

doi:10.1016/0038-1098(96)00348-1

Pressure and magnetic field effects on the volume anomaly associated with first-order valence change in YbInCu₄

J. M. De Teresa, Z. Arnold, A. Del Moral, M. R. Ibarra, J. Kamarád, D. T. Adroja, B. Rainford

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

46 Citations (Scopus)

Abstract

The effect of pressure and magnetic field on the first-order Yb valence change (from v ≈ 3 to v ≈ 2.9) at T_v ≈ 40 K in YbInCu₄ has been studied by measuring the change in volume associated with this transition. Volume thermal expansion measurements indicate that by applying pressure the transition is shifted to lower temperatures at the rate -2.2Kkbar^-1. From the volume anomaly at T_v, the valence change (≈ 0.1 at ambient pressure) is found to decrease at the rate Δv ≈ 0.0045 kbar^-1. The compressibility has also been measured above and below T_v, being 0.99Mbar^-1 at T = 295K and 1.20MbEr^-1 at T = 20K. The critical magnetic field, at which Yb valence exhibits a first-order field-dependent valence change below T_v, increases with decreasing temperature.

Original language	English
Pages (from-to)	911-915
Number of pages	5
Journal	Solid State Communications
Volume	99
Issue number	12
DOIs	https://doi.org/10.1016/0038-1098(96)00348-1
Publication status	Published - Sept 1996
Externally published	Yes

Keywords

D. thermal expansion
D. valence fluctuations
E. strain
High pressure

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/0038-1098(96)00348-1

Cite this

@article{8853edb4fa964d0a931eedc1ce5617d2,

title = "Pressure and magnetic field effects on the volume anomaly associated with first-order valence change in YbInCu4",

abstract = "The effect of pressure and magnetic field on the first-order Yb valence change (from v ≈ 3 to v ≈ 2.9) at Tv ≈ 40 K in YbInCu4 has been studied by measuring the change in volume associated with this transition. Volume thermal expansion measurements indicate that by applying pressure the transition is shifted to lower temperatures at the rate -2.2Kkbar-1. From the volume anomaly at Tv, the valence change (≈ 0.1 at ambient pressure) is found to decrease at the rate Δv ≈ 0.0045 kbar-1. The compressibility has also been measured above and below Tv, being 0.99Mbar-1 at T = 295K and 1.20MbEr-1 at T = 20K. The critical magnetic field, at which Yb valence exhibits a first-order field-dependent valence change below Tv, increases with decreasing temperature.",

keywords = "D. thermal expansion, D. valence fluctuations, E. strain, High pressure",

author = "{De Teresa}, {J. M.} and Z. Arnold and {Del Moral}, A. and Ibarra, {M. R.} and J. Kamar{\'a}d and Adroja, {D. T.} and B. Rainford",

year = "1996",

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language = "English",

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T1 - Pressure and magnetic field effects on the volume anomaly associated with first-order valence change in YbInCu4

AU - De Teresa, J. M.

AU - Arnold, Z.

AU - Del Moral, A.

AU - Ibarra, M. R.

AU - Kamarád, J.

AU - Adroja, D. T.

AU - Rainford, B.

PY - 1996/9

Y1 - 1996/9

N2 - The effect of pressure and magnetic field on the first-order Yb valence change (from v ≈ 3 to v ≈ 2.9) at Tv ≈ 40 K in YbInCu4 has been studied by measuring the change in volume associated with this transition. Volume thermal expansion measurements indicate that by applying pressure the transition is shifted to lower temperatures at the rate -2.2Kkbar-1. From the volume anomaly at Tv, the valence change (≈ 0.1 at ambient pressure) is found to decrease at the rate Δv ≈ 0.0045 kbar-1. The compressibility has also been measured above and below Tv, being 0.99Mbar-1 at T = 295K and 1.20MbEr-1 at T = 20K. The critical magnetic field, at which Yb valence exhibits a first-order field-dependent valence change below Tv, increases with decreasing temperature.

AB - The effect of pressure and magnetic field on the first-order Yb valence change (from v ≈ 3 to v ≈ 2.9) at Tv ≈ 40 K in YbInCu4 has been studied by measuring the change in volume associated with this transition. Volume thermal expansion measurements indicate that by applying pressure the transition is shifted to lower temperatures at the rate -2.2Kkbar-1. From the volume anomaly at Tv, the valence change (≈ 0.1 at ambient pressure) is found to decrease at the rate Δv ≈ 0.0045 kbar-1. The compressibility has also been measured above and below Tv, being 0.99Mbar-1 at T = 295K and 1.20MbEr-1 at T = 20K. The critical magnetic field, at which Yb valence exhibits a first-order field-dependent valence change below Tv, increases with decreasing temperature.

KW - D. thermal expansion

KW - D. valence fluctuations

KW - E. strain

KW - High pressure

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