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Preparation of Strontium Barium Niobate by Sol–Gel Method
Author(s) -
Hirano Shinichi,
Yogo Toshinobu,
Kikuta Koichi,
Ogiso Koji
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb04251.x
Subject(s) - strontium barium niobate , tetragonal crystal system , orthorhombic crystal system , materials science , strontium , barium , phase (matter) , sapphire , sol gel , metal , mineralogy , thin film , crystallography , ferroelectricity , crystal structure , metallurgy , nanotechnology , chemistry , optics , dielectric , organic chemistry , optoelectronics , laser , physics
Crack‐free SBN (Sr x Ba 1‐x Nb 2 O 6 ) thin films have been prepared by a sol–gel method with metal alkoxides. A homogeneous and stable precursor solution was obtained from Sr and Ba metal and Nb(OEt) 5 in ethanol with a key additive of ethoxyethanol. SBN (where x = 0.5) powder crystallized to orthorhombic phase at 700°C, and then transformed completely to tetragonal phase at 1200°C. The formation of tetragonal SBN was observed on sapphire (R) substrates at 700°C, whereas the tetragonal phase began to appear in the powders at 1000°C. SBN films with highly preferred orientation were successfully synthesized on MgO (100) substrates at 670°C.