Full 180° magnetization reversal with electric fields

Jianjun Wang, Jiamian Hu, J. Ma, J. X. Zhang, Long-qing Chen, C. W. Nan

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Achieving 180° magnetization reversal with an electric field rather than a current or magnetic field is a fundamental challenge and represents a technological breakthrough towards new memory cell designs. Here we propose a mesoscale morphological engineering approach to accomplishing full 180° magnetization reversals with electric fields by utilizing both the in-plane piezostrains and magnetic shape anisotropy of a multiferroic heterostructure. Using phase-field simulations, we examined a patterned single-domain nanomagnet with four-fold magnetic axis on a ferroelectric layer with electric-field-induced uniaxial strains. We demonstrated that the uniaxial piezostrains, if non-collinear to the magnetic easy axis of the nanomagnet at certain angles, induce two successive, deterministic 90° magnetization rotations, thereby leading to full 180° magnetization reversals.

Original languageEnglish (US)
Article number7507
JournalScientific reports
Volume4
DOIs
StatePublished - Dec 16 2014

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Anisotropy
Magnetic Fields

All Science Journal Classification (ASJC) codes

  • General

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Wang, Jianjun ; Hu, Jiamian ; Ma, J. ; Zhang, J. X. ; Chen, Long-qing ; Nan, C. W. / Full 180° magnetization reversal with electric fields. In: Scientific reports. 2014 ; Vol. 4.
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Full 180° magnetization reversal with electric fields. / Wang, Jianjun; Hu, Jiamian; Ma, J.; Zhang, J. X.; Chen, Long-qing; Nan, C. W.

In: Scientific reports, Vol. 4, 7507, 16.12.2014.

Research output: Contribution to journalArticle

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AU - Nan, C. W.

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