National Changhua University of Education Institutional Repository : Item 987654321/15403
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題名: Rotation Angle of Magneto-optical Kerr Effect with Different Capping Layer on CoFe Film
作者: Wu, Kuo-Ming;Wang, Jia-Feng;Chen, Kuang-Ching;Wu, Jong-Ching;Horng, Lance
貢獻者: 物理學系
關鍵詞: Kerr effect;Rotation angle;Capping layer
日期: 2007-03
上傳時間: 2013-02-05T02:19:36Z
出版者: Elsevier
摘要: To understand the influence of rotation angle in magneto-optical effect between conductor and insulator capping layer, we fabricate Co50Fe50/Ta, Co50Fe50/MgO, and Co50Fe50/SiNx bilayers with fixed CoFe thickness and modulated capping layer to systematically study the dependence on the thickness and material of capping layer. We also changed the CoFe thickness with fixed Ta. The switching characteristics were studied using longitudinal magneto-optic Kerr effect (LMOKE) techniques. The hysteresis loops (MH loops) and the coercivity measured by AGM are independent of the capping layer. Our data show the Kerr rotation angle as a function of capping layer thickness. Based on our calculations, the effective rotation angle changes with different capping material. The phenomenon of the increasing Kerr rotation angle is known to be dependent on the dielectric constant and refractive index of the capping layer. A comparison between the rotation angle in LMOKE and the material property has led to a better understanding of the relationship of light refracted in Ta, MgO and SiNx.
關聯: J. Magn. Magn. Mater., 310(2): e944-e946
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