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

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.

doi:10.1103/PhysRevB.92.094421

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

Journal Article · Mon Sep 14 00:00:00 EDT 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI: https://doi.org/10.1103/PhysRevB.92.094421 · OSTI ID:1265918

Folven, Eric ^[1]; Linder, J. ^[1]; Gomonay, O. V. ^[2]; Scholl, Andreas ^[3]; Doran, A. ^[3]; Young, A. T. ^[3]; Retterer, Scott T. ^[4]; Malik, V. K. ^[5]; Tybell, Thomas ^[1]; Takamura, Yayoi ^[5]; Grepstad, Jostein K. ^[1]

Norwegian Univ. of Science and Technology, Trondheim (Norway)
National Technical Univ. of Ukraine, Kyiv (Ukraine)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of California, Davis, CA (United States)

Using soft x-ray spectromicroscopy, we investigate the magnetic domain structure in embedded nanomagnets defined in La_0.7Sr_0.3MnO₃ thin films and LaFeO₃/La_0.7Sr_0.3MnO₃ 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. In conclusion, the data demonstrates that shape effects in antiferromagnets may be used to control the magnetic properties in nanomagnets.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1265918

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 9 Vol. 92; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (35)

Magnetic Tunnel Junctions Reiss, Günter; Schmalhorst, Jan; Thomas, Andre Magnetic Heterostructures https://doi.org/10.1007/978-3-540-73462-8_6	book	January 2008
Extensions of the geometric solution of the two dimensional coherent magnetization rotation model Thiaville, André Journal of Magnetism and Magnetic Materials, Vol. 182, Issue 1-2 https://doi.org/10.1016/S0304-8853(97)01014-7	journal	February 1998
Exchange bias Nogués, J.; Schuller, Ivan K. Journal of Magnetism and Magnetic Materials, Vol. 192, Issue 2 https://doi.org/10.1016/S0304-8853(98)00266-2	journal	February 1999
New heights for hard disk drives Zhu, Jian-Gang (Jimmy) Materials Today, Vol. 6, Issue 7-8 https://doi.org/10.1016/S1369-7021(03)00729-6	journal	July 2003
Magnetic tunnel junctions Zhu, Jian-Gang (Jimmy); Park, Chando Materials Today, Vol. 9, Issue 11 https://doi.org/10.1016/S1369-7021(06)71693-5	journal	November 2006
Magnetic Tunnel Junctions Swagten, H. J. M.; Paluskar, P. V. Encyclopedia of Materials: Science and Technology https://doi.org/10.1016/b978-008043152-9.02206-5	book	January 2010
X-PEEM study of antiferromagnetic domain patterns in LaFeO3 thin films and embedded nanostructures Folven, Erik; Takamura, Yayoi; Grepstad, Jostein K. Journal of Electron Spectroscopy and Related Phenomena, Vol. 185, Issue 10 https://doi.org/10.1016/j.elspec.2012.07.001	journal	October 2012
Shape-induced anisotropy in antiferromagnetic nanoparticles Gomonay, O.; Kondovych, S.; Loktev, V. Journal of Magnetism and Magnetic Materials, Vol. 354 https://doi.org/10.1016/j.jmmm.2013.11.003	journal	March 2014
Extensions of the geometric solution of the two dimensional coherent magnetization rotation model Thiaville, André Journal of Magnetism and Magnetic Materials, Vol. 182, Issue 1-2 https://doi.org/10.1016/s0304-8853(97)01014-7	journal	February 1998
New heights for hard disk drives Zhu, Jian-Gang (Jimmy) Materials Today, Vol. 6, Issue 7-8 https://doi.org/10.1016/s1369-7021(03)00729-6	journal	July 2003
Magnetic tunnel junctions Zhu, Jian-Gang (Jimmy); Park, Chando Materials Today, Vol. 9, Issue 11 https://doi.org/10.1016/s1369-7021(06)71693-5	journal	November 2006
Tuning Magnetic Domain Structure in Nanoscale La _0.7 Sr _0.3 MnO ₃ Islands Takamura, Yayoi; Chopdekar, Rajesh V.; Scholl, Andreas Nano Letters, Vol. 6, Issue 6 https://doi.org/10.1021/nl060615f	journal	June 2006
Antiferromagnetic Domain Reconfiguration in Embedded LaFeO ₃ Thin Film Nanostructures Folven, Erik; Tybell, Thomas; Scholl, Andreas Nano Letters, Vol. 10, Issue 11 https://doi.org/10.1021/nl1025908	journal	November 2010
Crossover from Spin-Flop Coupling to Collinear Spin Alignment in Antiferromagnetic/Ferromagnetic Nanostructures Folven, Erik; Scholl, Andreas; Young, Anthony Nano Letters, Vol. 12, Issue 5 https://doi.org/10.1021/nl300361e	journal	April 2012
Beating the superparamagnetic limit with exchange bias Skumryev, Vassil; Stoyanov, Stoyan; Zhang, Yong Nature, Vol. 423, Issue 6942 https://doi.org/10.1038/nature01687	journal	June 2003
Tuning the magnetic coupling across ultrathin antiferromagnetic films by controlling atomic-scale roughness Kuch, W.; Chelaru, L. I.; Offi, F. Nature Materials, Vol. 5, Issue 2 https://doi.org/10.1038/nmat1548	journal	January 2006
Magnetic anisotropy and strain states of (001) and (110) colossal magnetoresistance thin films Berndt, L. M.; Balbarin, Vincent; Suzuki, Y. Applied Physics Letters, Vol. 77, Issue 18 https://doi.org/10.1063/1.1321733	journal	October 2000
Effect of interfacial coupling on the magnetic ordering in ferro-antiferromagnetic bilayers Tsai, Shan-Ho; Landau, D. P.; Schulthess, Thomas C. Journal of Applied Physics, Vol. 93, Issue 10 https://doi.org/10.1063/1.1557794	journal	May 2003
Phenomenological theory of magnetization reversal in nanosystems with competing anisotropies Leonov, A. A.; Rößler, U. K.; Bogdanov, A. N. Journal of Applied Physics, Vol. 104, Issue 8 https://doi.org/10.1063/1.2996016	journal	October 2008
Coherent rotation of magnetization in three dimensions: A geometrical approach Thiaville, André Physical Review B, Vol. 61, Issue 18 https://doi.org/10.1103/PhysRevB.61.12221	journal	May 2000
Critical thickness for high-remanent single-domain configurations in square ferromagnetic thin platelets Goll, D.; Schütz, G.; Kronmüller, H. Physical Review B, Vol. 67, Issue 9 https://doi.org/10.1103/PhysRevB.67.094414	journal	March 2003
Correlated domain structure in perovskite oxide superlattices exhibiting spin-flop coupling Yang, Fan; Kemik, Nihan; Scholl, Andreas Physical Review B, Vol. 83, Issue 1 https://doi.org/10.1103/PhysRevB.83.014417	journal	January 2011
Effects of nanostructuring and substrate symmetry on antiferromagnetic domain structure in LaFeO 3 thin films Folven, E.; Scholl, A.; Young, A. Physical Review B, Vol. 84, Issue 22 https://doi.org/10.1103/PhysRevB.84.220410	journal	December 2011
Full Electric Control of Exchange Bias Wu, S. M.; Cybart, Shane A.; Yi, D. Physical Review Letters, Vol. 110, Issue 6 https://doi.org/10.1103/PhysRevLett.110.067202	journal	February 2013
Spin-Flop Coupling and Exchange Bias in Embedded Complex Oxide Micromagnets Takamura, Yayoi; Folven, Erik; Shu, Jonathan B. R. Physical Review Letters, Vol. 111, Issue 10 https://doi.org/10.1103/PhysRevLett.111.107201	journal	September 2013
Electric Control of Exchange Bias Training Echtenkamp, W.; Binek, Ch. Physical Review Letters, Vol. 111, Issue 18 https://doi.org/10.1103/PhysRevLett.111.187204	journal	October 2013
Consequences of Spin-Flop Coupling in Exchange Biased Films Schulthess, T. C.; Butler, W. H. Physical Review Letters, Vol. 81, Issue 20 https://doi.org/10.1103/PhysRevLett.81.4516	journal	November 1998
Coherent rotation of magnetization in three dimensions: A geometrical approach Thiaville, André Physical Review B, Vol. 61, Issue 18 https://doi.org/10.1103/physrevb.61.12221	journal	May 2000
Critical thickness for high-remanent single-domain configurations in square ferromagnetic thin platelets Goll, D.; Schütz, G.; Kronmüller, H. Physical Review B, Vol. 67, Issue 9 https://doi.org/10.1103/physrevb.67.094414	journal	March 2003
Correlated domain structure in perovskite oxide superlattices exhibiting spin-flop coupling Yang, Fan; Kemik, Nihan; Scholl, Andreas Physical Review B, Vol. 83, Issue 1 https://doi.org/10.1103/physrevb.83.014417	journal	January 2011
Effects of nanostructuring and substrate symmetry on antiferromagnetic domain structure in LaFeO 3 thin films Folven, E.; Scholl, A.; Young, A. Physical Review B, Vol. 84, Issue 22 https://doi.org/10.1103/physrevb.84.220410	journal	December 2011
Full Electric Control of Exchange Bias Wu, S. M.; Cybart, Shane A.; Yi, D. Physical Review Letters, Vol. 110, Issue 6 https://doi.org/10.1103/physrevlett.110.067202	journal	February 2013
Spin-Flop Coupling and Exchange Bias in Embedded Complex Oxide Micromagnets Takamura, Yayoi; Folven, Erik; Shu, Jonathan B. R. Physical Review Letters, Vol. 111, Issue 10 https://doi.org/10.1103/physrevlett.111.107201	journal	September 2013
Electric Control of Exchange Bias Training Echtenkamp, W.; Binek, Ch. Physical Review Letters, Vol. 111, Issue 18 https://doi.org/10.1103/physrevlett.111.187204	journal	October 2013
Consequences of Spin-Flop Coupling in Exchange Biased Films Schulthess, T. C.; Butler, W. H. Physical Review Letters, Vol. 81, Issue 20 https://doi.org/10.1103/physrevlett.81.4516	journal	November 1998

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Shape-imposed anisotropy in antiferromagnetic complex oxide nanostructures Bang, A. D.; Hallsteinsen, I.; Chopdekar, R. V. Applied Physics Letters, Vol. 115, Issue 11 https://doi.org/10.1063/1.5116806	journal	September 2019
Fast micromagnetic simulations on GPU—recent advances made with $\mathsf{mumax}^3$ Leliaert, J.; Dvornik, M.; Mulkers, J. Journal of Physics D: Applied Physics, Vol. 51, Issue 12 https://doi.org/10.1088/1361-6463/aaab1c	journal	February 2018
Temperature dependence of ferromagnet-antiferromagnet spin alignment and coercivity in epitaxial micromagnet bilayers Lee, Michael S.; Wynn, Thomas A.; Folven, Erik Physical Review Materials, Vol. 1, Issue 1 https://doi.org/10.1103/physrevmaterials.1.014402	journal	June 2017

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