Distribution of critical current density for magnetic domain wall motion

S. Fukami, M. Yamanouchi, Y. Nakatani, K. J. Kim, T. Koyama, D. Chiba, S. Ikeda, N. Kasai, T. Ono, H. Ohno

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The bit-to-bit distribution of a critical current density for magnetic domain wall (DW) motion is studied using Co/Ni wires with various wire widths (ws). The distribution inherently decreases with the w, and the ratio of standard deviation to average is 9.8% for wires with w = 40 nm. It is found that a self-distribution within one device, which is evaluated through repeated measurement, is a dominant factor in the bit-to-bit distribution. Micromagnetic simulation reveals that the distribution originates from DW configuration, which varies with device size.

Original languageEnglish
Article number17D508
JournalJournal of Applied Physics
Volume115
Issue number17
DOIs
Publication statusPublished - 2014 May 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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