LaMnO3 effects on the ferroelectric and magnetic properties of chemical solution deposited BiFeO3 thin films

被引：19

作者：

Habouti, S. ^{[1
]}

Solterbeck, C-H. ^{[1
]}

Es-Souni, M. ^{[1
]}

机构：

[1] Kiel Univ Appl Sci, Inst Mat & Surface Technol, D-24149 Kiel, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 102卷 / 07期

关键词：

Bismuth compounds - Ferroelectric devices - Hysteresis loops - Leakage currents - Magnetic properties - Magnetization - Microstructure - Polarization - Spin coating - Substrates;

D O I：

10.1063/1.2786057

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thin films of the BiFeO3-LaMnO3 solid solution were processed on (111)-Pt/Ti/SiO2/Si substrates via spin coating. Microstructure, and leakage current, ferroelectric and magnetic properties are reported. It is shown that the addition of 5 mol % LaMnO3 substantially improves the properties. Leakage currents that are several orders of magnitude lower than those of pure BiFeO3 were obtained. The leakage currents follow the Poole-Frenkel mechanism, and a trap depth of 0.94 eV was obtained. The addition of LaMnO3 resulted in saturated polarization hysteresis loops with a high remnant polarization 2P(r) of 88 mu C/cm(2). Finally, LaMnO3 also leads to higher coercive fields but smaller saturation magnetization. (C) 2007 American Institute of Physics.

引用

页数：4

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