Title of article
Disorder and phase transitions in oxyfluoride (NH4)3Ta(O2)2F4
Author/Authors
Flerov، نويسنده , , I.N. and Gorev، نويسنده , , M.V. and Fokina، نويسنده , , V.D. and Bovina، نويسنده , , A.F. and Bogdanov، نويسنده , , E.V. and Pogoreltsev، نويسنده , , E.I. and Laptash، نويسنده , , N.M.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
6
From page
713
To page
718
Abstract
Calorimetric, X-ray, dielectric and DTA under pressure measurements have been performed on oxyfluoride (NH4)3Ta(O2)2F4. The succession of nonferroelectric phase transitions was found associated with the order-disorder processes. The comparative analysis tantalate with related niobate has revealed the important role of the central atom in the physical properties behavior, mechanism of structural distortions and barocaloric effect in oxyfluorides with the eight-coordinated anionic polyhedra.
Keywords
Cubic oxyfluorides , entropy , permittivity , Pressure effect , structural disorder , Phase transitions
Journal title
Journal of Fluorine Chemistry
Serial Year
2011
Journal title
Journal of Fluorine Chemistry
Record number
1611353
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