X-ray diffraction studies of lattice properties in CeX (X = P and As) and Yb4As3

Kazuaki Iwasa, M. Kohgi, N. Nakajima, R. Yoshitake, Y. Hisazaki, H. Osumi, K. Tajima, N. Wakabayashi, Y. Haga, Akira Ochiai, T. Suzuki, A. Uesawa

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20 Citations (Scopus)

Abstract

X-ray diffraction experiments were performed in order to study the lattice properties of the low-carrier-density strongly correlated electron systems CeX (X = P and As) and Yb4As3. The lattice constants of CeP and CeAs take minima at 120 and 90 K, respectively. These results are explained by the model in which each crystal-field state is supposed to have its own effective ionic radius. The cell angle of Yb4As3 shows the first-order-like increase from 90.0° to 90.7° accompanied with the charge ordering at Tc = 288 K. It gradually increases to 90.8° with decreasing temperature and is almost independent of temperature below 200 K. The temperature dependence of the cell angle is discussed in connection with the process of the charge ordering.

Original languageEnglish
Pages (from-to)393-394
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume177-181
Issue numberPART 1
DOIs
Publication statusPublished - 1998 Jan 1

Keywords

  • Phase transitions - structural
  • Rare earth - pnictides
  • Thermal expansion
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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