SCANNING NEAR-FIELD OPTICAL MICROSCOPE FOR THE IMAGING OF MAGNETIC DOMAINS IN OPTICALLY OPAQUE MATERIALS

被引：103
|
作者：
SILVA, TJ [1 ]
SCHULTZ, S [1 ]
WELLER, D [1 ]
机构：
[1] IBM CORP,ALMADEN RES CTR,SAN JOSE,CA 95120
来源：
APPLIED PHYSICS LETTERS | 1994年 / 65卷 / 06期
关键词：
Cobalt - Imaging techniques - Interferometers - Light polarization - Light scattering - Magnetic domains - Magnetooptical effects - Optical materials - Optical variables measurement - Platinum - Superlattices;
D O I：
10.1063/1.112261
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We describe a scanning near-field optical microscope capable of magnetic imaging in optically opaque materials. The near-field probe is a approximately 30 nm Ag particle, optically excited near the surface plasmon resonance frequency. The separation of the probe and sample is regulated by a Newton ring interferometer. The polarization rotation of the scattered light due to near-field magneto-optic interactions is measured. A two-dimensional image is presented of thermomagnetically recorded magnetic domains in a perpendicularly magnetized Co/Pt multilayer material with 0.5-mum-diam domains at one micrometer spacing. Images suggest a resolution of <100 nm.
引用
收藏
页码：658 / 660
页数：3
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