Structure-property correlation over five phases and four transitions in Pb5Al3F19
Langue
en
Article de revue
Ce document a été publié dans
Acta Crystallographica Section B : Structural Science [1968-2013]. 2003, vol. 59, n° 5, p. 557-574
International Union of Crystallography
Résumé en anglais
The calorimetric and dielectric properties of Pb5Al3F19 in the five phases stable under ambient pressure are correlated with structure for fuller characterization of each phase. The first-order transition between ferroelectric ...Lire la suite >
The calorimetric and dielectric properties of Pb5Al3F19 in the five phases stable under ambient pressure are correlated with structure for fuller characterization of each phase. The first-order transition between ferroelectric phase V and antiferroelectric phase IV at TV,IV = 260 (5) K exhibits a thermal hysteresis of 135 (5) K on heating, with a maximum atomic displacement [Delta](xyz)max = 1.21 (6) Å; the transition from phase IV to ferroelastic phase III at 315 (5) K is also first order but with a thermal hysteresis of 10 (5) K...< Réduire
Mots clés en anglais
Dielectric properties
Structure property correlation
Phase transitions
Calorimetry
Dielectric properties.
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