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热处理对PZT薄膜织构形成的影响 被引量:1

Effect of Annealing on the Texture Formation in PZT Thin Films
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摘要 分别采用传统热处理(CFA)和快速热处理(RTA)对室温溅射在Pt(111)/Ti/SiO2/Si(100)基片上的Pb(Zr,Ti)O3(PZT)进行了晶化处理.结果表明:RTA倾向于形成(111)占优取向,而CFA倾向于形成(100)占优取向.不同工艺条件下的取向选择来源于形核机制的不同.在CFA条件下,形核在薄膜表面的PbO(100)处发生,导致(100)占优取向;在RTA条件下,形核在基片附近的Pt3Pb(111)/PZT界面处发生,导致(111)占优取向.铁电性能测试表明,由RTA处理得到的具有(111)占优取向的PZT薄膜剩余极化达到35μC/cm2. In this paper, the amorphous Pb(Zr,Ti)O3(PZT) thin films sputtered on Pt(111)/Ti/SiO2/Si(100) substrates at room temperature were crystallized by conventional annealing (CFA) and rapid thermal annealing ( RTA), respectively. It was found that RTA process favored, the (111) -preferred orientation in PZT thin films while the CFA process favored the (100)-preferred orientation. The different orientation selection might come from the different nucleation mechanism. In CFA, the nucleation occurred from the PbO (100) of the film surface which led to (100) -preferred orientation. While in RTA, the ( 111 ) -preferred orientation grains nucleated from the Pt3Pb (111 )/PZT interface near the substrate. The RTA-derived (111)-preferentially oriented PZT thin films exhibited a high remnant polarization of 35 μC/cm^2.
出处 《四川师范大学学报(自然科学版)》 CAS CSCD 北大核心 2008年第1期114-117,共4页 Journal of Sichuan Normal University(Natural Science)
基金 国家973基础研究基金(51310Z04-1)资助项目
关键词 Pb(Zr Ti)O3 热处理 薄膜取向 铁电性 Pb ( Zr, Ti) O3 Annealing Film orientation Ferroelectricity
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