Application of the 172Yb PAC probe to the study of Yb atom charge states in solids

K. Królas, M. Rams, P. Bonville, F. Canepa, A. Ochiai

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We present PAC measurements performed using the 172Yb probe in two Yb intermetallic compounds, Yb4As3 and Yb5Si3. The hyperfine quadrupole interaction was measured in a wide temperature range from 78 to 850 K. The temperature dependence of the electric field gradient differentiates divalent and trivalent Yb ions. In Yb4As3 we observe a phase transition at 295 K and a heterogeneous mixed valence state in the low temperature phase. By contrast, the Yb ions in the two crystallographic sites in Yb5Si3 can be classified as trivalent Yb ions with a large crystal field interaction.

Original languageEnglish
Pages (from-to)263-265
Number of pages3
JournalPhysica B: Condensed Matter
Volume230-232
DOIs
Publication statusPublished - 1997 Feb
Externally publishedYes

Keywords

  • Electric field gradient
  • Perturbed angular correlation spectroscopy
  • Valence states
  • Yb

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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