High pressure study of transition metal monoxides MnO and CoO: Structure and electrical resistance

E. Ito, Daisuke Yamazaki, Takashi Yoshino, S. Shan, X. Guo, N. Tsujimo, T. Kunimoto, Y. Higo, K. Funakoshi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We examined the structure of MnO and CoO up to 72 and 88. GPa, respectively, at room temperature by means of in situ X-ray diffraction using the synchrotron radiation at SPring-8. Compression was carried out with the Kawai-type apparatus equipped with sintered diamond anvils. In both MnO and CoO, the cubic B1 lattice starts distorting to the rhombohedral system at 37 and 40. GPa, respectively, which progressively proceeds under increasing pressure. Crystallographic direction of the distortion is opposite; i.e., a contraction along the diagonal [1. 1. 1] direction of the B1 lattice in MnO and a stretch in CoO. The rhombohedral distortion in 3d transition metal monoxides is discussed. Simultaneously measured electrical resistance of CoO showed characteristic change with pressure; i.e., the pronounced minimum at 14.9. GPa and the maximum at 49. GPa, which serve as good pressure fixed points.

Original languageEnglish
Pages (from-to)170-175
Number of pages6
JournalPhysics of the Earth and Planetary Interiors
Volume228
DOIs
Publication statusPublished - 2014

Fingerprint

transition element
electrical resistance
transition metals
anvils
diamond
contraction
synchrotron radiation
diamonds
X-ray diffraction
compression
room temperature
diffraction
x rays
temperature

Keywords

  • CoO
  • Electrical resistance
  • High pressure
  • MnO
  • Sintered diamond In situ X-ray observation Rhombohedral distortion

ASJC Scopus subject areas

  • Geophysics
  • Space and Planetary Science
  • Physics and Astronomy (miscellaneous)
  • Astronomy and Astrophysics

Cite this

High pressure study of transition metal monoxides MnO and CoO : Structure and electrical resistance. / Ito, E.; Yamazaki, Daisuke; Yoshino, Takashi; Shan, S.; Guo, X.; Tsujimo, N.; Kunimoto, T.; Higo, Y.; Funakoshi, K.

In: Physics of the Earth and Planetary Interiors, Vol. 228, 2014, p. 170-175.

Research output: Contribution to journalArticle

Ito, E. ; Yamazaki, Daisuke ; Yoshino, Takashi ; Shan, S. ; Guo, X. ; Tsujimo, N. ; Kunimoto, T. ; Higo, Y. ; Funakoshi, K. / High pressure study of transition metal monoxides MnO and CoO : Structure and electrical resistance. In: Physics of the Earth and Planetary Interiors. 2014 ; Vol. 228. pp. 170-175.
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AU - Shan, S.

AU - Guo, X.

AU - Tsujimo, N.

AU - Kunimoto, T.

AU - Higo, Y.

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