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Title: Simultaneous control of the Dzyaloshinskii-Moriya interaction and magnetic anisotropy in nanomagnetic trilayers

Abstract

Magneto-optical Kerr effect (MOKE) microscopy measurements of magnetic bubble domains demonstrate that Ar + irradiation around 100 eV can tune the Dzyaloshinskii-Moriya interaction (DMI) in Pt/Co/Pt trilayers. Varying the irradiation energy and dose changes the DMI sign and magnitude separately from the magnetic anisotropy, allowing tuning of the DMI while holding the coercive field constant. This simultaneous control emphasizes the different physical origins of these effects. To accurately measure the DMI, we propose and apply a physical model for a poorly understood peak in domain wall velocity at zero in-plane field. Finally, the ability to tune the DMI with the spatial resolution of the Ar + irradiation enables new fundamental investigations and technological applications of chiral nanomagnetics.

Authors:
 [1];  [2];  [3];  [3];  [3];  [3]
  1. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Nanoscale Science and Technology; Univ. of Maryland, College Park, MD (United States). Maryland NanoCenter; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Nanoscale Science and Technology; Univ. of Maryland, College Park, MD (United States). Maryland NanoCenter
  3. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Nanoscale Science and Technology
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1394972
Report Number(s):
LA-UR-16-28412
Journal ID: ISSN 0031-9007; TRN: US1702840
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 7; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science

Citation Formats

Balk, Andrew, Kim, Kyoung-Whan, Pierce, Daniel T., Stiles, Mark D., Unguris, John, and Stavis, Samuel M. Simultaneous control of the Dzyaloshinskii-Moriya interaction and magnetic anisotropy in nanomagnetic trilayers. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.119.077205.
Balk, Andrew, Kim, Kyoung-Whan, Pierce, Daniel T., Stiles, Mark D., Unguris, John, & Stavis, Samuel M. Simultaneous control of the Dzyaloshinskii-Moriya interaction and magnetic anisotropy in nanomagnetic trilayers. United States. doi:10.1103/PhysRevLett.119.077205.
Balk, Andrew, Kim, Kyoung-Whan, Pierce, Daniel T., Stiles, Mark D., Unguris, John, and Stavis, Samuel M. Thu . "Simultaneous control of the Dzyaloshinskii-Moriya interaction and magnetic anisotropy in nanomagnetic trilayers". United States. doi:10.1103/PhysRevLett.119.077205. https://www.osti.gov/servlets/purl/1394972.
@article{osti_1394972,
title = {Simultaneous control of the Dzyaloshinskii-Moriya interaction and magnetic anisotropy in nanomagnetic trilayers},
author = {Balk, Andrew and Kim, Kyoung-Whan and Pierce, Daniel T. and Stiles, Mark D. and Unguris, John and Stavis, Samuel M.},
abstractNote = {Magneto-optical Kerr effect (MOKE) microscopy measurements of magnetic bubble domains demonstrate that Ar+ irradiation around 100 eV can tune the Dzyaloshinskii-Moriya interaction (DMI) in Pt/Co/Pt trilayers. Varying the irradiation energy and dose changes the DMI sign and magnitude separately from the magnetic anisotropy, allowing tuning of the DMI while holding the coercive field constant. This simultaneous control emphasizes the different physical origins of these effects. To accurately measure the DMI, we propose and apply a physical model for a poorly understood peak in domain wall velocity at zero in-plane field. Finally, the ability to tune the DMI with the spatial resolution of the Ar+ irradiation enables new fundamental investigations and technological applications of chiral nanomagnetics.},
doi = {10.1103/PhysRevLett.119.077205},
journal = {Physical Review Letters},
number = 7,
volume = 119,
place = {United States},
year = {2017},
month = {8}
}

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Cited by: 18 works
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    Works referencing / citing this record:

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