期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 529, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jmmm.2021.167837
关键词
Scanning near-field optical microscopy; Magneto-optical microscopy; Aperture cantilevers; Bi-substituted iron garnets
资金
- Russian Ministry of Education and Science (Megagrant project) [075-15-2019-1934]
- Russian Science Foundation [19-72-20154]
- Ministry of Science and Higher Education of the Russian Federation [0069-2019-0009, 08522020-0015]
- Russian Ministry of science and higher education Project [075-03-2020-2167, 0719-2020-0017]
- Russian Science Foundation [19-72-20154] Funding Source: Russian Science Foundation
The study discusses the importance of improving magnetic structure investigation with the lowest possible resolution for the study and practical implementation of fundamental magnetism. By using scanning near-field magneto-optical microscopy (SNMOM) and new technology based on focused ion beam (FIB) treatment to produce aperture cantilevers with carbon hollow pyramid tip (ACCT), it is shown that ACCT have better light transmission coefficients compared to commonly used aperture silicon cantilevers.
Improving the ways of magnetic structure investigation with the lowest possible resolution is important in the study and practical implementation of fundamental magnetism. Here we discuss one of the most modern magneto-optical method of domain structure (DS) imaging, scanning near-field magneto-optical microscopy (SNMOM), and propose the new technology based on focused ion beam (FIB) treatment to produce aperture cantilevers with carbon hollow pyramid tip (ACCT). Estimated ACCT light transmission coefficients show better results compare to commonly used aperture silicon cantilevers. By measuring the polarization characteristics of aperture with diameter from 83 to 263 nm, we illustrate the possibility of ACCT to maintain a liner polarization of transmitted light. Testing of ACCT in atomic-force and SNMOM modes shows that ACCT are the effective tool in near-field imaging. Features of morphology and DS of Bi-substituted iron garnet (Bi: IG) films synthesized and used as the test objects, including DS peculiarities of 100 nm-size, is revealed.
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