Order-disorder reactions in the ferroelectric perovskites Pb(Sc1/2Nb1/2)O3 and Pb(Sc1/2Ta1/2)O3. I. Kinetics of the ordering process

Stenger, C.G.F. and Burggraaf, A.J. (1980) Order-disorder reactions in the ferroelectric perovskites Pb(Sc1/2Nb1/2)O3 and Pb(Sc1/2Ta1/2)O3. I. Kinetics of the ordering process. Physica Status Solidi A: Applied research, 61 (1). pp. 275-285. ISSN 0031-8965

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Abstract:	The perovskites Pb(Sc1/2Nb1/2)O3 and Pb(Sc1/2Ta1/2)O3 can be obtained in a disordered state by means of a synthesis at high temperature (1250 to 1500°C). Ordering of the trivalent and pentavalent ions occurs during annealing at lower temperatures. The kinetics of this ordering process are investigated by means of X-ray diffraction, dielectric polarisation, and DSC measurements. The ordering process proceeds via a nucleation-growth process and the average diameter of the ordered domains as a function of the annealing time is determined by X-ray line broadening. Disordering experiments are carried out on Pb(Sc1/2Nb1/2)O3 and an order-disorder transition temperature of 1210°C is yielded.
Item Type:	Article
Copyright:	© 1980 Wiley InterScience
Link to this item:	http://purl.utwente.nl/publications/70646
Official URL:	http://dx.doi.org/10.1002/pssa.2210610132
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