Improvement on the magneto-optical Kerr effect of cobalt film with a quadrilayer structure

doi:10.1088/1674-1056/22/8/087802

中国物理B ›› 2013, Vol. 22 ›› Issue (8): 87802-087802.doi: 10.1088/1674-1056/22/8/087802

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

Improvement on the magneto-optical Kerr effect of cobalt film with a quadrilayer structure

张绍银^{a b}, 唐少龙^a, 高锦龙^a, 罗晓婧^a, 夏文斌^a, 都有为^a

a National Laboratory of Solid State Microstructure and Physics Department, Nanjing University, Nanjing 210093, China;
b School of Science, Institute of Condensed Matter Physics, Linyi University, Linyi 276005, China

收稿日期:2013-02-28 修回日期:2013-03-22 出版日期:2013-06-27 发布日期:2013-06-27
基金资助:
Project supported by the National Key Project of Fundamental Research of China (Grant Nos. 2012CB932304 and 2010CB923404), the National Natural Science Foundation of China (Grant Nos. 50971070 and U1232210), and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

Improvement on the magneto-optical Kerr effect of cobalt film with a quadrilayer structure

Zhang Shao-Yin (张绍银)^{a b}, Tang Shao-Long (唐少龙)^a, Gao Jin-Long (高锦龙)^a, Luo Xiao-Jing (罗晓婧)^a, Xia Wen-Bin (夏文斌)^a, Du You-Wei (都有为)^a

a National Laboratory of Solid State Microstructure and Physics Department, Nanjing University, Nanjing 210093, China;
b School of Science, Institute of Condensed Matter Physics, Linyi University, Linyi 276005, China

Received:2013-02-28 Revised:2013-03-22 Online:2013-06-27 Published:2013-06-27
Contact: Tang Shao-Long E-mail:tangsl@nju.edu.cn
Supported by:
Project supported by the National Key Project of Fundamental Research of China (Grant Nos. 2012CB932304 and 2010CB923404), the National Natural Science Foundation of China (Grant Nos. 50971070 and U1232210), and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘要/Abstract

摘要： The magneto-optical Kerr effect of the HfO₂/Co/HfO₂/Al multilayer structure is investigated in this work, and an obvious cavity enhancement of the Kerr response for the HfO₂ semiconductor is found both theoretically and experimentally. Surprisingly, a maximum value of about-3° of the polar Kerr rotation for s-polarized incident light is observed in our experiment. We propose that this improvement on the Kerr effect can be attributed to the multiple reflection and optical interference in the cavity, which can also be proved by simulation using the finite element method.

关键词: resonant optical cavity, magneto-optical effects, magneto-optical recording

Abstract: The magneto-optical Kerr effect of the HfO₂/Co/HfO₂/Al multilayer structure is investigated in this work, and an obvious cavity enhancement of the Kerr response for the HfO₂ semiconductor is found both theoretically and experimentally. Surprisingly, a maximum value of about-3° of the polar Kerr rotation for s-polarized incident light is observed in our experiment. We propose that this improvement on the Kerr effect can be attributed to the multiple reflection and optical interference in the cavity, which can also be proved by simulation using the finite element method.

Key words: resonant optical cavity, magneto-optical effects, magneto-optical recording

中图分类号: (Magneto-optical effects)

78.20.Ls

75.50.Ss (Magnetic recording materials) 75.30.Gw (Magnetic anisotropy) 42.79.Vb (Optical storage systems, optical disks)

张绍银, 唐少龙, 高锦龙, 罗晓婧, 夏文斌, 都有为. Improvement on the magneto-optical Kerr effect of cobalt film with a quadrilayer structure[J]. 中国物理B, 2013, 22(8): 87802-087802.

Zhang Shao-Yin (张绍银), Tang Shao-Long (唐少龙), Gao Jin-Long (高锦龙), Luo Xiao-Jing (罗晓婧), Xia Wen-Bin (夏文斌), Du You-Wei (都有为). Improvement on the magneto-optical Kerr effect of cobalt film with a quadrilayer structure[J]. Chin. Phys. B, 2013, 22(8): 87802-087802.

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Improvement on the magneto-optical Kerr effect of cobalt film with a quadrilayer structure

Improvement on the magneto-optical Kerr effect of cobalt film with a quadrilayer structure

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