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Title: Stochastic nature of magnetic processes studied by full-field soft X-ray microscopy

Abstract

In nanomagnetism, one of the crucial scientific questions is whether magnetic behaviors are deterministic or stochastic on a nanoscale. Apart from the exciting physical issue, this question is also of paramount highest relevance for using magnetic materials in a wealth of technological applications such as magnetic storage and sensor devices. In the past, the research on the stochasticity of a magnetic process has been mainly done by macroscopic measurements, which only offer ensemble-averaged information. To give more accurate answer for the question and to fully understand related underlying physics, the direct observation of statistical behaviors in magnetic structures and magnetic phenomena utilizing advanced characterization techniques is highly required. One of the ideal tools for such study is a full-field soft X-ray microscope since it enables imaging of magnetic structures on the large field of view within a few seconds. Here in this paper, we review the stochastic behaviors of various magnetic processes including magnetization reversal process in thin films, magnetic domain wall motions in nanowires, and magnetic vortex formations in nanodisks studied by full-field soft X-ray microscopy. The origin triggering the stochastic nature witnessed in each magnetic process and the way to control the intrinsic nature are also discussed.

Authors:
 [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Center for X-ray Optics; Daegu Gyeongju Inst. of Science and Technology, Daegu (South Korea). Dept. of Emerging Materials Science; Ulsan National Inst. of Science and Technology (UNIST), Ulsan (South Korea). School of Materials Science and Engineering
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Korean National Research Foundation (NRF)
OSTI Identifier:
1542335
Grant/Contract Number:  
[AC02-05CH11231; 2012K1A4A3053565, 2016K1A3A7A09005336; 2016K1A3A7A09005241; 2015M3D1A1070465; 2016M3D1A1027831]
Resource Type:
Accepted Manuscript
Journal Name:
Current Applied Physics
Additional Journal Information:
[ Journal Volume: 18; Journal Issue: 11]; Journal ID: ISSN 1567-1739
Publisher:
Korean Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE

Citation Formats

Im, Mi-Young. Stochastic nature of magnetic processes studied by full-field soft X-ray microscopy. United States: N. p., 2018. Web. doi:10.1016/j.cap.2018.05.004.
Im, Mi-Young. Stochastic nature of magnetic processes studied by full-field soft X-ray microscopy. United States. doi:10.1016/j.cap.2018.05.004.
Im, Mi-Young. Sat . "Stochastic nature of magnetic processes studied by full-field soft X-ray microscopy". United States. doi:10.1016/j.cap.2018.05.004. https://www.osti.gov/servlets/purl/1542335.
@article{osti_1542335,
title = {Stochastic nature of magnetic processes studied by full-field soft X-ray microscopy},
author = {Im, Mi-Young},
abstractNote = {In nanomagnetism, one of the crucial scientific questions is whether magnetic behaviors are deterministic or stochastic on a nanoscale. Apart from the exciting physical issue, this question is also of paramount highest relevance for using magnetic materials in a wealth of technological applications such as magnetic storage and sensor devices. In the past, the research on the stochasticity of a magnetic process has been mainly done by macroscopic measurements, which only offer ensemble-averaged information. To give more accurate answer for the question and to fully understand related underlying physics, the direct observation of statistical behaviors in magnetic structures and magnetic phenomena utilizing advanced characterization techniques is highly required. One of the ideal tools for such study is a full-field soft X-ray microscope since it enables imaging of magnetic structures on the large field of view within a few seconds. Here in this paper, we review the stochastic behaviors of various magnetic processes including magnetization reversal process in thin films, magnetic domain wall motions in nanowires, and magnetic vortex formations in nanodisks studied by full-field soft X-ray microscopy. The origin triggering the stochastic nature witnessed in each magnetic process and the way to control the intrinsic nature are also discussed.},
doi = {10.1016/j.cap.2018.05.004},
journal = {Current Applied Physics},
number = [11],
volume = [18],
place = {United States},
year = {2018},
month = {5}
}

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