X-ray diffraction study on thermal properties of crystal lattices in CeP and CeAs

Kazuaki Iwasa; Masahumi Kohgi; Hiroyuki Ohsumi; Keisuke Tajima; Tetsuya Takeuchi; Yoshinori Haga; Akihiro Uesawa; Takashi Suzuki

doi:10.1143/JPSJ.68.881

X-ray diffraction study on thermal properties of crystal lattices in CeP and CeAs

Kazuaki Iwasa, Masahumi Kohgi, Hiroyuki Ohsumi, Keisuke Tajima, Tetsuya Takeuchi, Yoshinori Haga, Akihiro Uesawa, Takashi Suzuki

SCI - Physics

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

11 Citations (Scopus)

Abstract

X-ray diffraction studies at low temperatures have been performed in order to investigate thermal properties of crystal lattices in the low-carrier-density systems cerium monopnictides. CeP and CeAs show large crystal-lattice contractions with increasing temperatures up to about 120 K and 90 K, respectively. Due to the strong p-f mixing, the excited crystal field Γ₈-like state is expected to produce a shorter interatomic bond length between cerium ions and neighboring pnictogens than that realized by the Γ₇ ground state. The experimental results of the lattice contractions at low temperatures are explained by the thermal average of these crystal field states.

Original language	English
Pages (from-to)	881-886
Number of pages	6
Journal	journal of the physical society of japan
Volume	68
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.68.881
Publication status	Published - 1999 Mar

Keywords

CeAs
CeP
Lattice constant
Low-carrier-density system
X-ray diffraction
p-f mixing

ASJC Scopus subject areas

Physics and Astronomy(all)

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X-ray diffraction study on thermal properties of crystal lattices in CeP and CeAs. / Iwasa, Kazuaki; Kohgi, Masahumi; Ohsumi, Hiroyuki; Tajima, Keisuke; Takeuchi, Tetsuya; Haga, Yoshinori; Uesawa, Akihiro; Suzuki, Takashi.

In: journal of the physical society of japan, Vol. 68, No. 3, 03.1999, p. 881-886.

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

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abstract = "X-ray diffraction studies at low temperatures have been performed in order to investigate thermal properties of crystal lattices in the low-carrier-density systems cerium monopnictides. CeP and CeAs show large crystal-lattice contractions with increasing temperatures up to about 120 K and 90 K, respectively. Due to the strong p-f mixing, the excited crystal field Γ8-like state is expected to produce a shorter interatomic bond length between cerium ions and neighboring pnictogens than that realized by the Γ7 ground state. The experimental results of the lattice contractions at low temperatures are explained by the thermal average of these crystal field states.",

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AU - Iwasa, Kazuaki

AU - Kohgi, Masahumi

AU - Ohsumi, Hiroyuki

AU - Tajima, Keisuke

AU - Takeuchi, Tetsuya

AU - Haga, Yoshinori

AU - Uesawa, Akihiro

AU - Suzuki, Takashi

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AB - X-ray diffraction studies at low temperatures have been performed in order to investigate thermal properties of crystal lattices in the low-carrier-density systems cerium monopnictides. CeP and CeAs show large crystal-lattice contractions with increasing temperatures up to about 120 K and 90 K, respectively. Due to the strong p-f mixing, the excited crystal field Γ8-like state is expected to produce a shorter interatomic bond length between cerium ions and neighboring pnictogens than that realized by the Γ7 ground state. The experimental results of the lattice contractions at low temperatures are explained by the thermal average of these crystal field states.

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