In:
Journal of Materials Research, Springer Science and Business Media LLC, Vol. 10, No. 10 ( 1995-10), p. 2631-2641
Abstract:
Thin films of Pb(Mg,Zn) 1/3 Nb 2/3 O 3 (PMZN) were fabricated by spin casting the partially hydrolyzed Pb-Mg-Zn-Nb-O complex alkoxide sols on (111) Pt-coated MgO(100) planes. Analysis of the isothermal transformation data indicated that the growth of perovskite grains from the pyrochlore matrix is a diffusion-controlled process with an initial fast nucleation. The effect of water concentration in the sol on the preferential orientation of perovskite grains in the corresponding thin film was examined. A strong preferential orientation of (100) perovskite was obtained in the PMZN thin film derived from the sol having a molar ratio of H 2 O to total metal alkoxides ( R w ) of 2. A small-angle x-ray scattering (SAXS) experiment in the Porod region indicated that weakly branched precursor systems led to highly (100)-oriented perovskite grains after thin-film formation. The pyroelectric coefficient and the corresponding figure-of-merit were controlled by suitably varying the degree of preferential orientation during the fabrication of thin films.
Type of Medium:
Online Resource
ISSN:
0884-2914
,
2044-5326
DOI:
10.1557/JMR.1995.2631
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
1995
detail.hit.zdb_id:
54876-5
detail.hit.zdb_id:
2015297-8
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