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R&D: Dual-Structure Microwave-Assisted Magnetic Recording Using Only Spin Torque Oscillator

Configuration allows selective switching of either structure when subject to as magnetic fields oscillating at 9GHz and 20GHz.

AIP Advances has published an article written by Simon John Greaves, and Waka Saito, RIEC, Tohoku University, Katahira 2-1-1, Aoba ku, Sendai 980-8577, Japan.

Abstract:The selective switching of dual-structure magnetic dots under the influence of the stray field from a spin torque oscillator was investigated. A configuration was found which allowed selective switching of either structure when subject to ac magnetic fields oscillating at 9 GHz and 20 GHz. No other external magnetic fields were needed to switch the magnetisation of the structures.

 

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