Damping constant influence on spin dynamics in field generating layer of STO for MAMR writing head

Seungmo Noh, Daisuke Monma, Kousaku Miyake Masaaki Doi, Masashi Sahashi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

For Microwave Assisted Magnetic Recording (MAMR), large amplitude of ac stray field and coherent motion of magnetization and also low driving power are necessary as a performance of spin torque oscillator for writing head. The damping constant is characterized by both the dynamical motion of magnetization and critical current for the precession-motion. The damping constants for FexCo1-x dot were investigated by a network analyzer-ferromagnetic resonance measurement. From these results, suitable material for the oscillator and the effect of finite magnetic element size are discussed.

Original languageEnglish
Article number012061
JournalJournal of Physics: Conference Series
Volume266
Issue number1
DOIs
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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