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Wireless Microwave Detection Using M...

University of California, Irvine.

Wireless Microwave Detection Using Magnetic Tunnel Junctions.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Wireless Microwave Detection Using Magnetic Tunnel Junctions.
Author:	Youngblood, Brian J.
Description:	61 p.
Notes:	Source: Masters Abstracts International, Volume: 51-03.
Notes:	Adviser: Ilya N. Krivorotov.
Contained By:	Masters Abstracts International51-03(E).
Subject:	Nanoscience.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1529208
ISBN:	9781267711069

Wireless Microwave Detection Using Magnetic Tunnel Junctions.
Youngblood, Brian J.

Wireless Microwave Detection Using Magnetic Tunnel Junctions. - 61 p.

Source: Masters Abstracts International, Volume: 51-03.

Thesis (M.S.)--University of California, Irvine, 2012.

I report on experiments demonstrating the detection of airborne microwave radiation using a magnetic tunnel junction as the sensing element. The detection is based on the technique of spin-torque assisted ferromagnetic resonance. In our version of this technique the RF current induced in an antenna by the microwave radiation is fed into the tunnel junction. The ac voltage across the junction is rectified by oscillations in the tunneling magnetoresistance of the junction which are caused by spin transfer torque due to the injected current. Compact coplanar waveguide antennas and non-magnetic, microwave-transparent, reusable device/antenna holder enclosures were designed and and assembled to carry out these experiments. Junctions with two different material layer structures were tested and compared. One of the tested structures gave superior sensitivities higher than those reported in the literature for similar devices and comparable to the sensitivities of commercial, diode-based microwave sensors.

ISBN: 9781267711069Subjects--Topical Terms:

220425
Nanoscience.

Wireless Microwave Detection Using Magnetic Tunnel Junctions.
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245 1 0 $a Wireless Microwave Detection Using Magnetic Tunnel Junctions.
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502 $a Thesis (M.S.)--University of California, Irvine, 2012.
520 $a I report on experiments demonstrating the detection of airborne microwave radiation using a magnetic tunnel junction as the sensing element. The detection is based on the technique of spin-torque assisted ferromagnetic resonance. In our version of this technique the RF current induced in an antenna by the microwave radiation is fed into the tunnel junction. The ac voltage across the junction is rectified by oscillations in the tunneling magnetoresistance of the junction which are caused by spin transfer torque due to the injected current. Compact coplanar waveguide antennas and non-magnetic, microwave-transparent, reusable device/antenna holder enclosures were designed and and assembled to carry out these experiments. Junctions with two different material layer structures were tested and compared. One of the tested structures gave superior sensitivities higher than those reported in the literature for similar devices and comparable to the sensitivities of commercial, diode-based microwave sensors.
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650 4 $a Physics, Electricity and Magnetism. $3 227483
650 4 $a Physics, Condensed Matter. $3 226939
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