Effect of pressure and substitution for Yb on the first-order valence transition in YbInCu4

W. Zhang, N. Sato, K. Yoshimura, Akihiro Mitsuda, T. Goto, K. Kosuge

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Abstract

Single-crystalline samples of YbInCu4 and its partially substituted compounds by Y and Lu were synthesized by the flux method. The temperature dependence of the magnetic susceptibility from 2 to 320 K in the magnetic field of 0.5 T and the high-field magnetization up to 41 T under various fixed pressures were measured in order to investigate the effect of substitution, inherent chemical pressure, and external pressure on the first-order valence transition of YbInCu4. Substitution of Yb by Y or Lu results in a small increase or decrease of the lattice parameter, while both systems show a steep decrease of transition temperature (Tv) and transition magnetic field (Hv) with substitution, resulting in suppression of the valence transition around x=0.30 for Yb1-x YxInCu4 (0≤x≤0.3) and x=0.15 for Yb1-xLuxInCu4 (0≤x≤0.15). The effect of pressure on Hv of the pure and Y-substituted YbInCu4 is reported by dHv/dP≈-1 T/kbar, with a suppression of the valence transition of Yb0.8Y0.2InCu4 at the pressure of 8 kbar. The effect of inherent chemical pressure is very small compared with the intrinsic effect of substitution. The decreasing of Kondo temperature TK (∞1/X0) below Tv resulting from the substitution for the Yb lattice is discussed as an important factor affecting the valence transition of YbInCu4.

Original languageEnglish
Article number024112
Pages (from-to)241121-241128
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number2
DOIs
Publication statusPublished - Jul 1 2002
Externally publishedYes

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Substitution reactions
substitutes
valence
retarding
Magnetic fields
Magnetic susceptibility
magnetic fields
Superconducting transition temperature
Lattice constants
lattice parameters
Magnetization
transition temperature
Fluxes
Crystalline materials
magnetic permeability
Temperature
magnetization
temperature dependence
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Effect of pressure and substitution for Yb on the first-order valence transition in YbInCu4. / Zhang, W.; Sato, N.; Yoshimura, K.; Mitsuda, Akihiro; Goto, T.; Kosuge, K.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 66, No. 2, 024112, 01.07.2002, p. 241121-241128.

Research output: Contribution to journalArticle

Zhang, W. ; Sato, N. ; Yoshimura, K. ; Mitsuda, Akihiro ; Goto, T. ; Kosuge, K. / Effect of pressure and substitution for Yb on the first-order valence transition in YbInCu4. In: Physical Review B - Condensed Matter and Materials Physics. 2002 ; Vol. 66, No. 2. pp. 241121-241128.
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