Periodic magnetic domains in single-crystalline cobalt filament arrays

Fei Chen, Fan Wang, Fei Jia, Jingning Li, Kai Liu, Sunxiang Huang, Zhongzhi Luan, Di Wu, Yanbin Chen, Jianmin Zhu, Ru Wen Peng, Mu Wang

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Magnetic structures with controlled domain wall pattern may be applied as potential building blocks for three-dimensional magnetic memory and logic devices. Using a unique electrochemical self-assembly method, we achieve regular single-crystalline cobalt filament arrays with specific geometric profile and crystallographic orientation, and the magnetic domain configuration can be conveniently tailored. We report the transition of periodic antiparallel magnetic domains to compressed vortex magnetic domains depending on the ratio of height to width of the wires. A "phase diagram" is obtained to describe the dependence of the type of magnetic domain and the geometrical profiles of the wires. Magnetoresistance of the filaments demonstrates that the contribution of a series of 180 domain walls is over 0.15% of the zero-field resistance ρ(H=0). These self-assembled magnetic nanofilaments, with controlled periodic domain patterns, offer an interesting platform to explore domain-wall-based memory and logic devices.

Original languageEnglish (US)
Article number054405
JournalPhysical Review B
Volume93
Issue number5
DOIs
StatePublished - Feb 3 2016

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Chen, F., Wang, F., Jia, F., Li, J., Liu, K., Huang, S., Luan, Z., Wu, D., Chen, Y., Zhu, J., Peng, R. W., & Wang, M. (2016). Periodic magnetic domains in single-crystalline cobalt filament arrays. Physical Review B, 93(5), [054405]. https://doi.org/10.1103/PhysRevB.93.054405