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7Li NMR investigation of Li-Li pair ordering in the paraelectric phase of weakly substitutionally disordered K(1-x)Li(x)TaO3
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SYSNO ASEP 0353450 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title 7Li NMR investigation of Li-Li pair ordering in the paraelectric phase of weakly substitutionally disordered K(1-x)Li(x)TaO3 Author(s) Zalar, B. (SI)
Lebar, A. (SI)
Ailion, D.C. (US)
Kuzian, R. O. (UA)
Kondakova, I.V. (UA)
Laguta, Valentyn (FZU-D) RID, ORCIDSource Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 105, č. 22 (2010), 226402/1-226402/4Number of pages 4 s. Language eng - English Country US - United States Keywords ion ordering ; impurity ions ; crystal structure ; nuclear magnetic resonance Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects IAA100100810 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100521 - FZU-D (2005-2011) UT WOS 000284532900019 DOI https://doi.org/10.1103/PhysrevLett.105.226402 Annotation Beaking of the average cubic symmetry in Li-doped potassium tantalate was observed with quadrupole-perturbed 7Li NMR far above the nominal glass transition temperature. The observed spectrum consists of contribution from both isolated Li ions and from Li-Li pairs. It was found that the various Li-Li pair configurations are not equally probable. These are the first direct observation of biased ion ordering that persists at temperatures high above the glass phase. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2011
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