Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-10032
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Main Title: Electric field modification of magnetotransport in Ni thin films on (011) PMN-PT piezosubstrates
Author(s): Tkach, Alexander
Kehlberger, Andreas
Büttner, Felix
Jakob, Gerhard
Eisebitt, Stefan
Kläui, Mathias
Type: Article
Language Code: en
Abstract: This study reports the magnetotransport and magnetic properties of 20 nm-thick polycrystalline Ni films deposited by magnetron sputtering on unpoled piezoelectric (011) [PbMg1/3Nb2/3O3]0.68-[PbTiO3]0.32 (PMN-PT) substrates. The longitudinal magnetoresistance (MR) of the Ni films on (011) PMN-PT, measured at room temperature in the magnetic field range of −0.3 T < μ0H < 0.3 T, is found to depend on the crystallographic direction and polarization state of piezosubstrate. Upon poling the PMN-PT substrate, which results in a transfer of strain to the Ni film, the MR value decreases by factor of 20 for the current along [100] of PMN-PT and slightly increases for the [011⎯⎯] current direction. Simultaneously, a strong increase (decrease) in the field value, where the MR saturates, is observed for the [011⎯⎯] ([100]) current direction. The anisotropic magnetoresistance is also strongly affected by the remanent strain induced by the electric field pulses applied to the PMN-PT in the non-linear regime revealing a large (132 mT) magnetic anisotropy field. Applying a critical electric field of 2.4 kV/cm, the anisotropy field value changes back to the original value, opening a path to voltage-tuned magnetic field sensor or storage devices. This strain mediated voltage control of the MR and its dependence on the crystallographic direction is correlated with the results of magnetization reversal measurements.
URI: https://depositonce.tu-berlin.de/handle/11303/11141
http://dx.doi.org/10.14279/depositonce-10032
Issue Date: 10-Feb-2015
Date Available: 18-May-2020
DDC Class: 530 Physik
Subject(s): magnetic properties
thin films
magnetoresistance
piezoelectricity
Sponsor/Funder: EC/FP7/246102/EU/Interfacing Oxides/IFOX
DFG, 49741853, GSC 266: MAterialwissenschaften IN MainZ
EC/FP7/208162/EU/Spin currents in magnetic nanostructures/MASPIC
License: http://rightsstatements.org/vocab/InC/1.0/
Journal Title: Applied Physics Letters
Publisher: American Institute of Physics (AIP)
Publisher Place: Melville, NY
Volume: 106
Issue: 6
Article Number: 062404
Publisher DOI: 10.1063/1.4907775
EISSN: 1077-3118
ISSN: 0003-6951
Notes: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 106, 062404 (2015) and may be found at https://doi.org/10.1063/1.4907775
Appears in Collections:FG Röntgenoptik und Nanometer-Optik » Publications

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