Fast magnetization precession for perpendicularly magnetized MnAlGe epitaxial films with atomic layered structures

S. Mizukami, A. Sakuma, T. Kubota, Y. Kondo, A. Sugihara, T. Miyazaki

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Epitaxial growth and magnetization precessional dynamics for tetragonal MnAlGe films are investigated. The films are grown on MgO (100) with c axis parallel to the film normal and well-ordered layered structures. The film exhibits rectangular hysteresis loop with perpendicular magnetic anisotropy constant of 4.7 Merg/cm3 and saturation magnetization of 250 emu/cm3. Magnetization precession with precession frequency of ∼100 GHz is observed by time-resolved magneto-optical Kerr effect. Further, the Gilbert damping constant is found to be less than ∼0.05, which is much larger than that obtained using the first principles calculations.

Original languageEnglish
Article number142405
JournalApplied Physics Letters
Volume103
Issue number14
DOIs
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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