Electric-field control of ferromagnetic resonance in monolithic BaFe12O19–Ba0.5Sr0.5TiO3 heterostructures
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- Jaydip Das
- Colorado State University Department of Physics, , Fort Collins, Colorado 80523, USA
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- Young-Yeal Song
- Colorado State University Department of Physics, , Fort Collins, Colorado 80523, USA
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- Mingzhong Wu
- Colorado State University Department of Physics, , Fort Collins, Colorado 80523, USA
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説明
<jats:p>This paper demonstrates an electric-field tuning of the ferromagnetic resonance (FMR) responses at millimeter wave frequencies for a monolithic magneto-electric heterostructure. The layered stack is comprised of c-axis oriented and low loss barium hexaferrite (BaM) and (111) oriented ferroelectric barium strontium titanate (BSTO) layers along with embedded platinum electrode layers, all fabricated by pulsed laser deposition technique. A tunability of the FMR frequency as large as 3.5 MHz/V has been observed at 60 GHz due to application of bias voltages in the range of several volts. The realization of such a large tunability relies on the quasi-lattice-to-lattice contact between the BaM and BSTO layers as well as the high quality of those layers.</jats:p>
収録刊行物
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- Journal of Applied Physics
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Journal of Applied Physics 108 (4), 043911-, 2010-08-15
AIP Publishing