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Authors: Barra, A.
Ross, Andrew
Gomonay, Olena
Baldrati, Lorenzo
Chavez, A.
Lebrun, Romain
Schneider, J. D.
Shirazi, Paymon
Wang, Q.
Sinova, Jairo
Carman, Gregory P.
Kläui, Mathias
Title: Effective strain manipulation of the antiferromagnetic state of polycrystalline NiO A
Online publication date: 9-Aug-2021
Language: english
Abstract: As a candidate material for applications such as magnetic memory, polycrystalline antiferromagnets offer the same robustness to external magnetic fields, THz spin dynamics, and lack of stray fields as their single crystalline counterparts, but without the limitation of epitaxial growth and lattice matched substrates. Here, we first report the detection of the average Neel vector orientation in polycrystalline NiO via spin Hall magnetoresistance (SMR). Second, by applying strain through a piezo-electric substrate, we reduce the critical magnetic field required to reach a saturation of the SMR signal, indicating a change of the anisotropy. Our results are consistent with polycrystalline NiO exhibiting a positive sign of the in-plane magnetostriction. This method of anisotropy-tuning offers an energy efficient, on-chip alternative to manipulate a polycrystalline antiferromagnet's magnetic state.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
Version: Accepted version
Publication type: Zeitschriftenaufsatz
Document type specification: Scientific article
License: in Copyright
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Journal: Applied physics letters
Pages or article number: 172408
Publisher: American Inst. of Physics
Publisher place: Melville, NY
Issue date: 2021
ISSN: 0003-6951
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Appears in collections:JGU-Publikationen

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