Ferroelectricity in hexagonal YFeO3 film at room temperature

doi:10.1088/1674-1056/24/1/017701

›› 2015, Vol. 24 ›› Issue (1): 17701-017701.doi: 10.1088/1674-1056/24/1/017701

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Ferroelectricity in hexagonal YFeO₃ film at room temperature

张润兰^{a b}, 陈长乐^a, 张云婕^a, 邢辉^a, 董祥雷^a, 金克新^a

a Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Northwestern Polytechnical University, Xi'an 710072, China;
b College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

收稿日期:2014-06-04 修回日期:2014-08-25 出版日期:2015-01-05 发布日期:2015-01-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61471301, 61078057, 51202195, and 511172183), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20126102110045), and the NPU Foundation for Fundamental Research (Grant Nos. JC201155, JC201271, and JC20120246).

Ferroelectricity in hexagonal YFeO₃ film at room temperature

Zhang Run-Lan (张润兰)^{a b}, Chen Chang-Le (陈长乐)^a, Zhang Yun-Jie (张云婕)^a, Xing Hui (邢辉)^a, Dong Xiang-Lei (董祥雷)^a, Jin Ke-Xin (金克新)^a

a Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Northwestern Polytechnical University, Xi'an 710072, China;
b College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

Received:2014-06-04 Revised:2014-08-25 Online:2015-01-05 Published:2015-01-05
Contact: Chen Chang-Le E-mail:chenchl@nwpu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61471301, 61078057, 51202195, and 511172183), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20126102110045), and the NPU Foundation for Fundamental Research (Grant Nos. JC201155, JC201271, and JC20120246).

摘要/Abstract

摘要： In this paper we report the leakage current, ferroelectric and piezoelectric properties of the YFeO₃ film with hexagonal structure, which was fabricated on Si(111) substrate by a simple sol-gel method. The leakage current test shows good characteristics as the leakage current density is 5.4× 10^-6A/cm² under 5 V. The dominant leakage mechanism is found to be an Ohmic behavior at low electric field and space-charge-limited conduction at high electric field region. The P-E measurements show ferroelectric hysteresis loops with small remnant polarization and coercive field at room temperature. The distinct and switchable domain structures on the nanometer scale are observed by piezoresponse force microscopy, which testifies to the ferroelectricity of the YFeO₃ film further.

关键词: hexagonal YFeO₃, multiferroic, ferroelectricity, piezoresponse force microscopy

Abstract: In this paper we report the leakage current, ferroelectric and piezoelectric properties of the YFeO₃ film with hexagonal structure, which was fabricated on Si(111) substrate by a simple sol-gel method. The leakage current test shows good characteristics as the leakage current density is 5.4× 10^-6A/cm² under 5 V. The dominant leakage mechanism is found to be an Ohmic behavior at low electric field and space-charge-limited conduction at high electric field region. The P-E measurements show ferroelectric hysteresis loops with small remnant polarization and coercive field at room temperature. The distinct and switchable domain structures on the nanometer scale are observed by piezoresponse force microscopy, which testifies to the ferroelectricity of the YFeO₃ film further.

Key words: hexagonal YFeO₃, multiferroic, ferroelectricity, piezoresponse force microscopy

中图分类号: (Multiferroic/magnetoelectric films)

77.55.Nv

77.84.-s (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials) 68.37.Ps (Atomic force microscopy (AFM)) 73.40.-c (Electronic transport in interface structures)

张润兰, 陈长乐, 张云婕, 邢辉, 董祥雷, 金克新. Ferroelectricity in hexagonal YFeO₃ film at room temperature[J]. , 2015, 24(1): 17701-017701.

Zhang Run-Lan (张润兰), Chen Chang-Le (陈长乐), Zhang Yun-Jie (张云婕), Xing Hui (邢辉), Dong Xiang-Lei (董祥雷), Jin Ke-Xin (金克新). Ferroelectricity in hexagonal YFeO₃ film at room temperature[J]. Chin. Phys. B, 2015, 24(1): 17701-017701.

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Ferroelectricity in hexagonal YFeO₃ film at room temperature

Ferroelectricity in hexagonal YFeO₃ film at room temperature

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