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周期性起伏四层磁性薄膜的克尔效应

Kerr Effect for Orderly Corrugated Magnetic Quadrilayer Thin Film

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摘要

结合干涉光刻和磁控溅射制备了一维周期性起伏的磁性多层薄膜。利用扫描探针显微镜对样品的微结构进行表征,利用?#21046;?#20202;和磁光测量系统对样品的光学性能参数和磁光克尔效应进行测试和研究。实验结果发现,磁性多层薄膜磁光性能得到极大的提升,磁光增强的克尔谱峰值与条带的宽?#21462;?#20013;间层二氧化铪层的厚度有关;利用介质层的厚度可调?#32856;?#21512;薄膜的磁光特性。进一步研究发现横克尔效应的增强现象。理论计算的结果证实,磁光增强源于光学腔干涉共振和磁等离激元的耦合效应。

Abstract

The one-dimensional orderly nano-corrugation of magnetic quadrilayer thin film was fabricated by means of interference lithography (IL) and magnetron sputtering techniques. Scanning probe microscope (SPM) was used to characterize morphologies of the samples. The magneto-optical Kerr effect (MOKE) and optical parameters measurement were performed with a homemade MOKE system and ellipsometry (ELLIP-A), respectively. The experimental results show that the magneto-optical Kerr signal of the nanostructure is significantly enhanced, the Kerr peak is connected with the stripe width and the thickness of intermediate HfO2 layer, and the magneto-optical properties of the corrugated magnetic thin film can be tuned by the thickness of the intermediate HfO2 layer. Furthermore, the enhancement of transverse magneto-optical Kerr effect is observed. The theoretical calculations show that the magneto-optical Kerr enhancement of the system can be manipulated significantly by the coupling between plasmon resonance and cavity effect.

Newport宣传-MKS新实验室计划
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DOI:10.3788/AOS201939.0824001

所属栏目:表面光学

基金项目:山东省自然科学基金(ZR2016AL09)、临沂大学博?#31185;?#21160;金(40615046);

收稿日期:2019-03-19

修改稿日期:2019-04-22

网络出版日期:2019-08-01

作者单位    点击查看

张绍银:临沂大学物理与电子工程学院, 凝聚态物理研究所, 山东 临沂 276005
艾树涛:临沂大学物理与电子工程学院, 凝聚态物理研究所, 山东 临沂 276005

联系人作者:张绍银([email protected])

备注:山东省自然科学基金(ZR2016AL09)、临沂大学博?#31185;?#21160;金(40615046);

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引用该论文

Shaoyin Zhang, Shutao Ai. Kerr Effect for Orderly Corrugated Magnetic Quadrilayer Thin Film[J]. Acta Optica Sinica, 2019, 39(8): 0824001

张绍银, 艾树涛. 周期性起伏四层磁性薄膜的克尔效应[J]. 光学学报, 2019, 39(8): 0824001

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