Anomalous magnetization reversal due to proximity effect of antiphase boundaries

R. G S Sofin, Han Chun Wu, I. V. Shvets

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Here we report anomalous double switching hysteresis loop and high coercivity (∼0.1 T) in Fe 3O 4(110) thin films. Our analytical model based on spin chains confined within small antiphase boundary domains (APBDs) suggests a significant proximity effect of antiferromagnetic antiphase boundaries (APBs). Furthermore, the calculated domain size (D) follows the well-known scaling relation D=C√t. The results suggest that the interface exchange coupling between neighboring magnetic domains through antiferromagnetic APBs is responsible for the double switching hysteresis. Our findings could help advance the studies of anomalous properties of magnetic materials originating from growth defects. This effect can be utilized for the tunability of exchange bias in devices.

Original languageEnglish
Article number212403
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number21
DOIs
Publication statusPublished - Dec 8 2011

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Magnetization reversal
antiphase boundaries
magnetization
Magnetic domains
Exchange coupling
Magnetic materials
Hysteresis loops
Coercive force
hysteresis
Hysteresis
Analytical models
magnetic domains
magnetic materials
Thin films
Defects
coercivity
scaling
defects
thin films

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Anomalous magnetization reversal due to proximity effect of antiphase boundaries. / Sofin, R. G S; Wu, Han Chun; Shvets, I. V.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 84, No. 21, 212403, 08.12.2011.

Research output: Contribution to journalArticle

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