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Temperature and thickness dependence of tunneling anisotropic magnetoresistance in exchange-biased Py/IrMn/MgO/Ta stacks

Reichlov�, H.; Nov�k, V.; Kurosaki, Y.; Yamada, M.; Yamamoto, H.; Nishide, A.; Hayakawa, J.; Takahashi, H.; Marysko, M.; Wunderlich, J.; Marti, X.; Jungwirth, T.

Authors

H. Reichlov�

V. Nov�k

Y. Kurosaki

M. Yamada

H. Yamamoto

A. Nishide

J. Hayakawa

H. Takahashi

M. Marysko

J. Wunderlich

X. Marti

TOMAS JUNGWIRTH tomas.jungwirth@nottingham.ac.uk
Research Professor of Ferromagnetic Semiconductors



Abstract

Weinvestigate the thickness and temperature dependence of a series of Ni0.8Fe0.2/Ir0.2Mn0.8 bilayer samples with varying thickness ratio of the ferromagnet/antiferromagnet (tFM tAFM) in order to explore the exchange coupling strengths in tunneling anisotropic magnetoresistance (TAMR) devices. Specific values of tFM tAFM lead to four distinct scenarios with specific electric responses to moderate magnetic fields. The characteristic dependence of the measured TAMR signal on applied voltage allows us to confirm its persistence up to room temperature despite an overlapped contribution by a thermal magnetic noise.

Citation

Reichlová, H., Novák, V., Kurosaki, Y., Yamada, M., Yamamoto, H., Nishide, A., …Jungwirth, T. (2016). Temperature and thickness dependence of tunneling anisotropic magnetoresistance in exchange-biased Py/IrMn/MgO/Ta stacks. Materials Research Express, 3, Article 076406. https://doi.org/10.1088/2053-1591/3/7/076406

Journal Article Type Article
Acceptance Date Jun 14, 2016
Publication Date Jul 22, 2016
Deposit Date Feb 3, 2017
Publicly Available Date Mar 29, 2024
Journal Materials Research Express
Electronic ISSN 2053-1591
Publisher IOP Publishing
Peer Reviewed Not Peer Reviewed
Volume 3
Article Number 076406
DOI https://doi.org/10.1088/2053-1591/3/7/076406
Public URL https://nottingham-repository.worktribe.com/output/799835
Publisher URL http://iopscience.iop.org/article/10.1088/2053-1591/3/7/076406/meta;jsessionid=9ACC60B336A138B815D1FB1C12360B94.ip-10-40-1-105

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