A spin rotator for detecting all three magnetization vector components by spin‐polarized scanning electron microscopy
作者:
Teruo Kohashi,
Hideo Matsuyama,
Kazuyuki Koike,
期刊:
Review of Scientific Instruments
(AIP Available online 1995)
卷期:
Volume 66,
issue 12
页码: 5537-5543
ISSN:0034-6748
年代: 1995
DOI:10.1063/1.1146081
出版商: AIP
数据来源: AIP
摘要:
A spin rotator for observing magnetic domains with all three magnetization components of a sample surface by spin‐polarized scanning electron microscopy (spin SEM) has been developed. The spin rotator is placed between the sample and the spin detector in a spin SEM, and can rotate the polarization vector of secondary electrons by &pgr;/2. Although the spin detector itself can detect only two independent polarization components, the rotation of polarization makes third‐component detection possible. The conventional spin rotator, which is a well‐known energy filter named a Wien filter, has been much improved to have a large focusing area by using hyperbolic cylindrical pole pieces as a magnet and several auxiliary electrodes. As a result, all the secondary electrons emitted from the area of a surface as large as 1 mm in diameter can pass the spin rotator with uniform spin rotation, and the distribution of all three magnetization components can be imaged successfully by spin SEM. ©1995 American Institute of Physics.
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