Chemical pressure control of exchange interaction in Mo pyrochlore

Y. Moritomo, Sh Xu, A. Machida, Takuro Katsufuji, E. Nishibori, M. Takata, M. Sakata, S. W. Cheong

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Structural parameters are systematically investigated for Mo pyrochlore R2Mo2O7 (R = Dy, Gd, Sm, and Nd) by means of synchrotron radiation x-ray powder diffraction. This system shows a crossover from the spin-glass (SG) state to the ferromagnetic metallic (FM) state as the averaged ionic radius rR of the rare-earth ion increases. We have found the Mo-O-Mo bond angle increases with rR from 129.7° for Dy2Mo2O7 (SG) to 131.5° for Nd2Mo2O7 (FM). This behavior is opposite to the so-called Kanamori-Goodenough rule.

Original languageEnglish
Article number144425
Pages (from-to)1444251-1444255
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number14
Publication statusPublished - 2001
Externally publishedYes

Fingerprint

Spin glass
Pressure control
Exchange interactions
spin glass
Synchrotron radiation
Rare earths
crossovers
synchrotron radiation
rare earth elements
interactions
Ions
X rays
radii
diffraction
ions
x rays
pyrochlore
Powder Diffraction

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Moritomo, Y., Xu, S., Machida, A., Katsufuji, T., Nishibori, E., Takata, M., ... Cheong, S. W. (2001). Chemical pressure control of exchange interaction in Mo pyrochlore. Physical Review B - Condensed Matter and Materials Physics, 63(14), 1444251-1444255. [144425].

Chemical pressure control of exchange interaction in Mo pyrochlore. / Moritomo, Y.; Xu, Sh; Machida, A.; Katsufuji, Takuro; Nishibori, E.; Takata, M.; Sakata, M.; Cheong, S. W.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 63, No. 14, 144425, 2001, p. 1444251-1444255.

Research output: Contribution to journalArticle

Moritomo, Y, Xu, S, Machida, A, Katsufuji, T, Nishibori, E, Takata, M, Sakata, M & Cheong, SW 2001, 'Chemical pressure control of exchange interaction in Mo pyrochlore', Physical Review B - Condensed Matter and Materials Physics, vol. 63, no. 14, 144425, pp. 1444251-1444255.
Moritomo Y, Xu S, Machida A, Katsufuji T, Nishibori E, Takata M et al. Chemical pressure control of exchange interaction in Mo pyrochlore. Physical Review B - Condensed Matter and Materials Physics. 2001;63(14):1444251-1444255. 144425.
Moritomo, Y. ; Xu, Sh ; Machida, A. ; Katsufuji, Takuro ; Nishibori, E. ; Takata, M. ; Sakata, M. ; Cheong, S. W. / Chemical pressure control of exchange interaction in Mo pyrochlore. In: Physical Review B - Condensed Matter and Materials Physics. 2001 ; Vol. 63, No. 14. pp. 1444251-1444255.
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