DAFS study of local structure of ordered nanodomains in PbMg{sub 1/3}Nb{sub 2/3}O{sub 3}

Journal Article · Mon Jun 01 00:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56285· OSTI ID:678749

Frenkel, A I; Robinson, I K ^[1]

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1. Materials Research Laboratory, University of Illinois at Urbana---Champaign, Urbana, Illinois 61801 (United States)

We have performed a Diffraction Anomalous Fine Structure (DAFS) study of a single crystal of the relaxor ferroelectric PbMg{sub 1/3}Nb{sub 2/3}O{sub 3}. DAFS measurements were performed at the Nb {ital K} edge on a half-order Bragg reflection originating from the 1:1 ordered nanodomains. DAFS data analysis provided us with the local structure around Nb atoms in the ordered nanodomains. The Nb-O distance in the ordered region was determined to be 0.052(10) {Angstrom} shorter than half the lattice parameter of the bulk crystal, in good agreement with one model of the ferroelectric phase transition broadening [JETP {bold 84}, 994 (1997)]. {copyright} {ital 1998 American Institute of Physics.}

• Sponsoring Organization: USDOE
• OSTI ID: 678749
• Report Number(s): CONF-980235-; ISSN 0094-243X; TRN: 99:009211
• Journal Information: AIP Conference Proceedings, Vol. 436, Issue 1; Conference: 5. Williamsburg workshop on first-principles calculations for ferroelectrics, Williamsburg, VA (United States), 1-4 Feb 1998; Other Information: PBD: Jun 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LEAD COMPOUNDS
MAGNESIUM COMPOUNDS
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
FERROELECTRIC MATERIALS
LEAD OXIDES
MAGNESIUM OXIDES
NIOBIUM OXIDES
CRYSTAL STRUCTURE
DOMAIN STRUCTURE
X-RAY DIFFRACTION
ABSORPTION SPECTRA
STRUCTURE FACTORS
CRYSTAL-PHASE TRANSFORMATIONS
BOND LENGTHS