PbTiO3films on various substrates were prepared by a metalorganic decomposition process using a multilayer spinning technique. Films on LaAlO3and MgO substrates were preferentiallychyphen;axis oriented, and those on SrTiO3have a completelychyphen;axis orientation. The mechanism leading to the orientation was discussed. Contrary to thechyphen;axis orientation,ahyphen;axis orientation can be induced on otherwise random films if they were annealed under pressure.
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