利用近场扫描微波显微镜对磁畴进行可视化

Visualization of magnetic domains by near-field scanning microwave microscope.

作者信息

Lee Kiejin, Melikyan Harutyun, Babajanyan Arsen, Sargsyan Tigran, Kim Jongchel, Kim Seungwan, Friedman Barry

机构信息

Department of Physics and Interdisciplinary Program of Integrated Biotechnology, Sogang University, Seoul 121-742, Republic of Korea.

出版信息

Ultramicroscopy. 2009 Jul;109(8):889-93. doi: 10.1016/j.ultramic.2009.03.013. Epub 2009 Mar 19.

DOI:10.1016/j.ultramic.2009.03.013

PMID:19342175

Abstract

A near-field scanning microwave microscope (NSMM) system was used for the investigation of magnetic properties of a hard disk (HD) under an external magnetic field. To demonstrate local microwave characterization of magnetic domains by NSMM, we scanned the HD surface by measuring the microwave reflection coefficient S(11) of the NSMM at an operating frequency near 4.4GHz. The NSMM offers a reliable means for quantitative measurement of magnetic domains with high spatial resolution and sensitivity.

摘要

一种近场扫描微波显微镜（NSMM）系统被用于研究外部磁场下硬盘（HD）的磁特性。为了通过NSMM展示磁畴的局部微波特性，我们通过测量NSMM在接近4.4GHz的工作频率下的微波反射系数S(11)来扫描HD表面。NSMM为具有高空间分辨率和灵敏度的磁畴定量测量提供了一种可靠的手段。