采用溶胶-凝胶法在Si衬底上制备了钛酸镧铅薄膜.通过对膜进行XRD、SEM、介电和铁电性能测试,研究了退火条件和掺镧量对薄膜性能的影响,结果发现在600℃下退火1h的PLT薄膜呈现钙钛矿结构;常温下,薄膜的矫顽场和剩余极化强度都随着掺镧量的增加而降低,其介电常数和介质损耗却随掺镧量的增加而增大.
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