Issue 91, 2016, Issue in Progress

Strain-controlled giant magnetoresistance of a spin valve grown on a flexible substrate

Abstract

This paper studies the strain-controlled giant magnetoresistance (GMR) change of a top pinned spin valve with the stacking structure of Co90Fe10/Cu/Co90Fe10/IrMn fabricated on a flexible polyethylene terephthalate substrate. The strain transverse to the magnetic easy axis can manipulate the magnetism of the Co90Fe10 layer and the Co90Fe10/IrMn bilayer and results in a large reversible and monotonic GMR variation from 0.64% (tensile strain) to 2.08% (compressive strain), which almost remains the same after bending 500 times. According to the Stoner–Wohlfarth model, the magnetic anisotropy of the free and pinned layers can be manipulated by strain, which causes the GMR variation of the spin valve. The heterostructure could also be used to generate a rectangle or sawtooth wave GMR signal. These findings indicate an efficient way to design magnetoelectric devices based on strain-modulated GMR changes.

Graphical abstract: Strain-controlled giant magnetoresistance of a spin valve grown on a flexible substrate

Article information

Article type
Paper
Submitted
14 Jul 2016
Accepted
08 Sep 2016
First published
09 Sep 2016

RSC Adv., 2016,6, 88090-88095

Strain-controlled giant magnetoresistance of a spin valve grown on a flexible substrate

Q. Guo, X. G. Xu, Q. Q. Zhang, Q. Liu, Y. J. Wu, Z. Q. Zhou, W. M. Zhu, Y. Wu, J. Miao and Y. Jiang, RSC Adv., 2016, 6, 88090 DOI: 10.1039/C6RA17910J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements