Effect of Ba6Ti17O40/BaTiO3 Interface Structure on {111} Twin Formation and Abnormal Grain Growth in BaTiO3

A structural transition of Ba6Ti17O40/BaTiO3 interfaces from faceted to rough was induced by reducing oxygen partial pressure in the atmosphere. As the oxygen partial pressure decreased, the number densities of {111} twins and abnormal grain decreased. TEM observation showed that the twin formation...

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Veröffentlicht in:	Journal of the American Ceramic Society 2004-04, Vol.87 (4), p.739-741
Hauptverfasser:	Jung, Yang-Il, Lee, Byoung-Ki, Kang, Suk-Joong L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences barium titanate Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals Condensed matter: structure, mechanical and thermal properties Defects and impurities in crystals microstructure Exact sciences and technology Grain and twin boundaries grain growth Interface structure and roughness interfaces Miscellaneous Physics Solid surfaces and solid-solid interfaces Structure of solids and liquids crystallography Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Technical ceramics
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Zusammenfassung:	A structural transition of Ba6Ti17O40/BaTiO3 interfaces from faceted to rough was induced by reducing oxygen partial pressure in the atmosphere. As the oxygen partial pressure decreased, the number densities of {111} twins and abnormal grain decreased. TEM observation showed that the twin formation was governed only by the faceting of the interface. Experimental evidence of {111} twin‐assisted abnormal growth of faceted BaTiO3 grains was also obtained.
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1551-2916.2004.00739.x