Frequency control of a spin-torque oscillator using magnetostrictive anisotropy

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We report the working principle of a spin-torque oscillator, of which the frequency is efficiently controlled by manipulating the magnetostrictive anisotropy. To justify the scheme, we simulate a conventional magnetic-tunnel junction-based oscillator which is fabricated on a piezoelectric material. By applying mechanical stress to a free layer using a piezoelectric material, the oscillation frequency can be controlled to ensure a broad tuning range without a significant reduction of the dynamic resistance variation. Such controllability, which appears in the absence of an external magnetic field, will not only enable the integration of spin-torque oscillators and conventional complimentary metal-oxide semiconductor technology but will also broaden the applicability of spintorque oscillators.
Publisher
AMER INST PHYSICS
Issue Date
2016-01
Language
English
Article Type
Article
Citation

APPLIED PHYSICS LETTERS, v.108, no.2

ISSN
0003-6951
DOI
10.1063/1.4939743
URI
http://hdl.handle.net/10203/202542
Appears in Collection
MS-Journal Papers(저널논문)EE-Journal Papers(저널논문)
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