CoFeB Thickness Dependence of Damping Constants for Single and Double CoFeB-MgO Interface Structures

Eli Christopher I. Enobio, Hideo Sato, Shunsuke Fukami, Fumihiro Matsukura, Hideo Ohno

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

We investigate the CoFeB thickness dependence of the damping constant α of single and double CoFeB-MgO interface structures by vector-network-analyzer ferromagnetic resonance (VNA-FMR). The damping constant increases with decreasing the CoFeB thickness for the single interface structure, and the damping constant for the double-interface structure takes a similar value to that for the single-interface structures with the same CoFeB thickness.

Original languageEnglish
Article number5700303
JournalIEEE Magnetics Letters
Volume6
DOIs
Publication statusPublished - 2015

Keywords

  • CoFeB-MgO
  • Spintronics
  • ferromagnetic resonance
  • magnetic tunnel junction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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