不同退火气氛下Bi2NiMnO6薄膜的铁电性能和漏电流研究

doi:10.3969/j.issn.1007-7162.2015.04.004

广东工业大学学报 ›› 2015, Vol. 32 ›› Issue (04): 21-24.doi: 10.3969/j.issn.1007-7162.2015.04.004

不同退火气氛下Bi₂NiMnO₆薄膜的铁电性能和漏电流研究

邓敏霖，刘秋香，李万朋

广东工业大学物理与光电工程学院，广东广州 510006

收稿日期:2014-11-13 出版日期:2015-12-04 发布日期:2015-12-04
作者简介:邓敏霖(1989-)，女，硕士研究生，主要研究方向为多铁材料及器件物理. 刘秋香(1970-)，女，教授，博士，硕士生导师，主要研究方向为功能材料与器件物理，E-mail：liuqx@gdut.edu.cn
基金资助:
国家自然科学基金资助项目(10774030, 11032010)；广东省高教基金资助项目(2012KJCX0044)

Influence of Annealing Atmosphere on the Ferroelectric and Leakage Current Behavior of Bi₂NiMnO₆ Thin Films

Deng Min-lin, Liu Qiu-xiang, Li Wan-peng

School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China

Received:2014-11-13 Online:2015-12-04 Published:2015-12-04

摘要/Abstract

摘要： 采用化学溶液法以LaNiO₃为底电极在Si(100)衬底上生长了Bi₂NiMnO₆薄膜，分别在N₂和O₂下对薄膜进行退火，退火温度均为600 ℃，研究不同退火气氛对薄膜结构与电性能的影响.用XRD测量分析了Bi₂NiMnO₆薄膜的结构，用铁电性能测量仪表征了样品的铁电性能和漏电流特性.结果表明，在N₂或O₂气氛下，Bi₂NiMnO₆薄膜均能成相，所有样品在室温下均表现出铁电性能，同时，这些样品都呈现出相当低的漏电流密度.此外，还讨论了Bi₂NiMnO₆薄膜的导电机制.

关键词: 双钙钛矿；薄膜； Bi₂NiMnO₆；电性能；溶胶-凝胶

Abstract: Bi₂NiMnO₆ (abbreviated as BNMO) thin films grow on LaNiO₃ buffered Si(100) substrate prepared by chemical solution deposition. The structure of the thin films is characterized by X-ray diffraction, and both the ferroelectric properties and leakage current behavior are measured by ferroelectric tester at room temperature. The results suggest that they have become crystalline phases in the two samples annealed in N₂ and O₂ respectively. The ferroelectric properties appear in all samples under room temperature and the BNMO sample shows a fairly low leakage current density. Furthermore, the mechanism of electrical conductivity is also investigated in the paper.

Key words: double perovskite； thin film； Bi₂NiMnO₆； electrical properties； sol-gel

邓敏霖, 刘秋香, 李万朋. 不同退火气氛下Bi₂NiMnO₆薄膜的铁电性能和漏电流研究[J]. 广东工业大学学报, 2015, 32(04): 21-24.

DENG Min-Lin, LIU Qiu-Xiang, LI Wan-Peng. Influence of Annealing Atmosphere on the Ferroelectric and Leakage Current Behavior of Bi₂NiMnO₆ Thin Films[J]. Journal of Guangdong University of Technology, 2015, 32(04): 21-24.

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不同退火气氛下Bi₂NiMnO₆薄膜的铁电性能和漏电流研究

Influence of Annealing Atmosphere on the Ferroelectric and Leakage Current Behavior of Bi₂NiMnO₆ Thin Films

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