Feb, 2016
Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates
PHYSICAL REVIEW B
- Volume
- 93
- Number
- 8
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1103/PhysRevB.93.085109
- Publisher
- AMER PHYSICAL SOC
We observed all-in type Nb tetrahedral displacement in nonmagnetic pyrochlore niobates A(2)Nb(2)O(7) (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 L-3 edge, indicates that the all-in type Nb tetrahedral displacement has the periodicity with its short-range correlation.
- Link information
- ID information
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- DOI : 10.1103/PhysRevB.93.085109
- ISSN : 2469-9950
- eISSN : 2469-9969
- Web of Science ID : WOS:000369405000003