化学合成钙钛矿BiFeO3-PbTiO3薄膜的铁电性能

2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics Pub Date : 2007-05-27 DOI:10.1109/ISAF.2007.4393286

A. Iwata, W. Sakamoto, T. Yogo

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引用次数: 10

摘要

在这项研究中，我们研究了BiFeO3-PbTiO3 (BF-PT)体系的固溶体，以提高钙钛矿相的结构稳定性，并通过使用形态取向相边界(MPB)成分来提高几种性能。通过与PbTiO3形成固溶体，成功制备了钙钛矿BF-PT单相薄膜。虽然BF-PT薄膜在室温附近的电阻率不够高，但在低温下观察到较大的铁电性。0.7BiFeO3-0.3PbTiO3薄膜在-190℃时的Pr值为60 muC/cm2。

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Ferroelectric Properties of Chemically Synthesized Perovskite BiFeO3-PbTiO3 Thin Films

In this study, we investigated the solid solution of BiFeO₃-PbTiO₃ (BF-PT) system to improve the structural stability of perovskite phase and to enhance of several properties by using a morphotropic phase boundary (MPB) composition. Perovskite BF-PT single phase thin films were successfully fabricated though the formation of solid solution with PbTiO₃. Although the electrical resistivity of BF-PT thin films was not sufficiently high at around room temperature, the large ferroelectricity was observed at low temperatures. The 0.7BiFeO₃-0.3PbTiO₃ thin films exhibited the P_r value of 60 muC/cm² at -190degC.

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2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics

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