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Detection of ferromagnetic resonance from 1 nm-thick Co.

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.

SUBMITTER: Yoshii S

PROVIDER: S-EPMC7519674 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Detection of ferromagnetic resonance from 1 nm-thick Co.

Yoshii Shugo S Ohshima Ryo R Ando Yuichiro Y Shinjo Teruya T Shiraishi Masashi M

Scientific reports 20200925 1

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 SiO<sub>2</sub> 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 ...[more]

PMID: 32978463

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