Ferroelectric and antiferroelectric materials with pyrochlore structure
- 1 January 1978
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 21 (1) , 429-431
- https://doi.org/10.1080/00150197808237288
Abstract
Several compounds with the pyrochlore structure have been investigated. Dielectric and structural studies of the compound Cd2NB2O6S show the existence of three phase transitions at 106°C, 184°C and 282°C. The ferroelectric properties have been studied by several methods (x-Ray, DTA, dielectric and dilatometric methods, second harmonic generation). We also discuss some structural hypotheses. Bi2MIIIMvO7, oxides (MIII=Cr, Fe, In, Sc; Mv=Nb, Ta, Sb) with the cubic pyrochlore structure have been prepared. Some compounds exhibit broad maxima in the temperature dependence of the dielectric constant and the tangent of dielectric loss angle.Keywords
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