Domain wall configuration and magneto-transport properties in dual spin-valve with nanoconstriction

Byong Sun Chun, Han Chun Wu, Su Jung Noh, In Chang Chu, Santiago Serrano-Guisan, Chanyong Hwang, Igor V. Shvets, Zhi Min Liao, Mohamed Abid, Young-geun Kim

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Abstract

We investigated the effect of external field on magneto-transport properties of synthetic antiferromagnet dual spin-valve with nanoconstriction with focus on domain wall (DW) configuration and magnetization reversal process. As magnetic field rotated from in-plane to out-of-plane along hard axis configuration, the magnetization reversal mode changed from a vortex to a transverse type, and a multistep switching process appeared due to the development of a transverse magnetization reversal mode with DW pushing towards the higher anisotropy region. The difference in the shape of nanoconstriction made an asymmetric energy barrier to the DW propagation which resulted in an asymmetry depinning field.

Original languageEnglish
Article number242409
JournalApplied Physics Letters
Volume100
Issue number24
DOIs
Publication statusPublished - 2012 Jun 11

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Sun Chun, B., Wu, H. C., Jung Noh, S., Chang Chu, I., Serrano-Guisan, S., Hwang, C., Shvets, I. V., Liao, Z. M., Abid, M., & Kim, Y. (2012). Domain wall configuration and magneto-transport properties in dual spin-valve with nanoconstriction. Applied Physics Letters, 100(24), [242409]. https://doi.org/10.1063/1.4729126