Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates

S. Torigoe, Y. Ishimoto, Y. Aoishi, H. Murakawa, D. Matsumura, K. Yoshii, Y. Yoneda, Y. Nishihata, K. Kodama, K. Tomiyasu, K. Ikeda, H. Nakao, Yoshio Nogami, Naoshi Ikeda, T. Otomo, N. Hanasaki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We observed all-in type Nb tetrahedral displacement in nonmagnetic pyrochlore niobates A2Nb2O7(A=Nd0.5Ca0.5 and Y0.5Ca0.5) through the analysis of the neutron pair distribution function and the extended x-ray absorption function spectroscopy. The all-in type Nb tetrahedral displacement, which has the character of a charge singlet state, is driven by the formation of the bonding orbital. The diffuse scattering in the x-ray diffraction, which has the resonant component in the Nb L3 edge, indicates that the all-in type Nb tetrahedral displacement has the periodicity with its short-range correlation.

Original languageEnglish
Article number085109
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume93
Issue number8
DOIs
Publication statusPublished - Feb 4 2016

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niobates
X rays
Distribution functions
Neutrons
Diffraction
Spectroscopy
Scattering
x ray absorption
periodic variations
x ray diffraction
distribution functions
neutrons
orbitals
scattering
spectroscopy
pyrochlore

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Torigoe, S., Ishimoto, Y., Aoishi, Y., Murakawa, H., Matsumura, D., Yoshii, K., ... Hanasaki, N. (2016). Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates. Physical Review B - Condensed Matter and Materials Physics, 93(8), [085109]. https://doi.org/10.1103/PhysRevB.93.085109

Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates. / Torigoe, S.; Ishimoto, Y.; Aoishi, Y.; Murakawa, H.; Matsumura, D.; Yoshii, K.; Yoneda, Y.; Nishihata, Y.; Kodama, K.; Tomiyasu, K.; Ikeda, K.; Nakao, H.; Nogami, Yoshio; Ikeda, Naoshi; Otomo, T.; Hanasaki, N.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 93, No. 8, 085109, 04.02.2016.

Research output: Contribution to journalArticle

Torigoe, S, Ishimoto, Y, Aoishi, Y, Murakawa, H, Matsumura, D, Yoshii, K, Yoneda, Y, Nishihata, Y, Kodama, K, Tomiyasu, K, Ikeda, K, Nakao, H, Nogami, Y, Ikeda, N, Otomo, T & Hanasaki, N 2016, 'Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates', Physical Review B - Condensed Matter and Materials Physics, vol. 93, no. 8, 085109. https://doi.org/10.1103/PhysRevB.93.085109
Torigoe, S. ; Ishimoto, Y. ; Aoishi, Y. ; Murakawa, H. ; Matsumura, D. ; Yoshii, K. ; Yoneda, Y. ; Nishihata, Y. ; Kodama, K. ; Tomiyasu, K. ; Ikeda, K. ; Nakao, H. ; Nogami, Yoshio ; Ikeda, Naoshi ; Otomo, T. ; Hanasaki, N. / Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates. In: Physical Review B - Condensed Matter and Materials Physics. 2016 ; Vol. 93, No. 8.
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