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Title: Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets

Abstract

Using soft x-ray spectromicroscopy, we investigate the magnetic domain structure in embedded nanomagnets defined in La0.7Sr0.3MnO3 thin films and LaFeO3/La0.7Sr0.3MnO3 bilayers. We find that shape-controlled antiferromagnetic domain states give rise to a significant reduction of the switching field of the rectangular nanomagnets. This is discussed within the framework of competition between an intrinsic spin-flop coupling and shape anisotropy. The data demonstrates that shape effects in antiferromagnets may be used to control the magnetic properties in nanomagnets.

Authors:
 [1];  [1];  [2];  [3];  [3];  [3];  [4];  [5];  [1];  [5];  [1]
+ Show Author Affiliations
  1. Norwegian Univ. of Science and Technology, Trondheim (Norway)
  2. National Technical Univ. of Ukraine, Kyiv (Ukraine)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Univ. of California, Davis, CA (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1265918
Alternate Identifier(s):
OSTI ID: 1215749; OSTI ID: 1843190
Grant/Contract Number:  
AC05-00OR22725; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 9; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Folven, Eric, Linder, J., Gomonay, O. V., Scholl, Andreas, Doran, A., Young, A. T., Retterer, Scott T., Malik, V. K., Tybell, Thomas, Takamura, Yayoi, and Grepstad, Jostein K. Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.094421.
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Folven, Eric, Linder, J., Gomonay, O. V., Scholl, Andreas, Doran, A., Young, A. T., Retterer, Scott T., Malik, V. K., Tybell, Thomas, Takamura, Yayoi, & Grepstad, Jostein K. Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets. United States. https://doi.org/10.1103/PhysRevB.92.094421
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Folven, Eric, Linder, J., Gomonay, O. V., Scholl, Andreas, Doran, A., Young, A. T., Retterer, Scott T., Malik, V. K., Tybell, Thomas, Takamura, Yayoi, and Grepstad, Jostein K. Mon . "Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets". United States. https://doi.org/10.1103/PhysRevB.92.094421. https://www.osti.gov/servlets/purl/1265918.
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@article{osti_1265918,
title = {Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets},
author = {Folven, Eric and Linder, J. and Gomonay, O. V. and Scholl, Andreas and Doran, A. and Young, A. T. and Retterer, Scott T. and Malik, V. K. and Tybell, Thomas and Takamura, Yayoi and Grepstad, Jostein K.},
abstractNote = {Using soft x-ray spectromicroscopy, we investigate the magnetic domain structure in embedded nanomagnets defined in La0.7Sr0.3MnO3 thin films and LaFeO3/La0.7Sr0.3MnO3 bilayers. We find that shape-controlled antiferromagnetic domain states give rise to a significant reduction of the switching field of the rectangular nanomagnets. This is discussed within the framework of competition between an intrinsic spin-flop coupling and shape anisotropy. The data demonstrates that shape effects in antiferromagnets may be used to control the magnetic properties in nanomagnets.},
doi = {10.1103/PhysRevB.92.094421},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 9,
volume = 92,
place = {United States},
year = {Mon Sep 14 00:00:00 EDT 2015},
month = {Mon Sep 14 00:00:00 EDT 2015}
}
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https://doi.org/10.1103/PhysRevB.92.094421
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