Frequency dependence of microwave-assisted switching in CoCrPt granular perpendicular media

Frequency dependence of microwave-assisted switching in CoCrPt granular perpendicular media

The microwave-assisted switching properties of a CoCrPt-TiO2 granular perpendicular medium are investigated by detecting the anomalous Hall effect. We improved the device structure to be able to generate a linearly polarized microwave field of 950 Oe without a significant increase in temperature. Co...

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Veröffentlicht in:Japanese Journal of Applied Physics 2018-09, Vol.57 (9S2), p.9
Hauptverfasser: Kikuchi, Nobuaki, Shimada, Kyohei, Shimatsu, Takehito, Okamoto, Satoshi, Kitakami, Osamu
Format: Artikel
Sprache:eng
Schlagworte:
Coercivity
Dependence
Hall effect
Linear polarization
Microwave frequencies
Switching
Titanium dioxide
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Zusammenfassung:The microwave-assisted switching properties of a CoCrPt-TiO2 granular perpendicular medium are investigated by detecting the anomalous Hall effect. We improved the device structure to be able to generate a linearly polarized microwave field of 950 Oe without a significant increase in temperature. Coercivity decreases linearly with increasing microwave frequency and the microwave assistance effect is most enhanced by the application of microwaves of 18 GHz frequency with a coercivity reduction ratio of 55%.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.57.09TE02