Detection of Ferromagnetic Resonance from 1 nm-thick Co

S. Yoshii; R. Ohshima; Y. Ando; T. Shinjo; M. Shiraishi

Detection of Ferromagnetic Resonance from 1 nm-thick Co

Materials Science 2020-09-07 v1 Applied Physics

Authors: S. Yoshii , R. Ohshima , Y. Ando , T. Shinjo , M. Shiraishi

Abstract

To explore the further possibilities of nanometer-thick ferromagnetic films (ultrathin ferromagnetic films), we investigated the ferromagnetic resonance (FMR) of 1 nm-thick Co film. Whilst an FMR signal was not observed for the Co film grown on a SiO2 substrate, the insertion of a 3 nm-thick amorphous Ta buffer layer beneath the Co enabled the detection of a salient FMR signal, which was attributed to the smooth surface of the amorphous Ta. This result implies the excitation of FMR in an ultrathin ferromagnetic film, which can pave the way to controlling magnons in ultrathin ferromagnetic films.

Keywords

ferromagnetic resonance ultrathin films cobalt tantalum buffer layer magnons amorphous surface

Cite

@article{arxiv.2009.01977,
  title  = {Detection of Ferromagnetic Resonance from 1 nm-thick Co},
  author = {S. Yoshii and R. Ohshima and Y. Ando and T. Shinjo and M. Shiraishi},
  journal= {arXiv preprint arXiv:2009.01977},
  year   = {2020}
}

Comments

15 pages, 4 figures (to appear Scientific Reports)

Related papers

View all related →