Voltage-tunable magnetic devices for communication applications
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United States of America Patent
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Nov 14, 2017
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app pub date -
Mar 18, 2016
filing date -
Mar 19, 2015
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Abstract
Magnetic devices and methods for forming a magnetic device are disclosed. The magnetic device includes a MTJ element. The MTJ element has first and second MTJ terminals which include first and second electrodes. The free layer of the MTJ element includes a natural precessional frequency which undergoes Rabi oscillation in the presence of a radio frequency (RF) matching the natural precessional frequency. A strain induced magnetoelectric (SIM) unit contacts one of the electrodes proximate to the free layer of the MTJ element while a digital line is coupled to the SIM unit. A desired voltage is provided on the digital line to cause the SIM unit to produce a desired strain on the electrode proximate to the free layer to tune the precessional frequency of the free layer to a desired precessional frequency for detecting a desired RF by the magnetic device. The desired RF causes a change in current through the MTJ element due to Rabi oscillation.
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