Title:
伝送回路一体型マイクロ波発生素子並びにマイクロ波検出方法、マイクロ波検出回路、マイクロ波検出素子及び伝送回路一体型マイクロ波検出素子
Document Type and Number:
Japanese Patent JP4677589
Kind Code:
B2
Abstract:
Microwave generating and detection portions of a electronic circuit is improved in efficiency and reduced in size. A microwave generating element A comprises a lower electrode 1, a layer 3 formed on the lower electrode 1 in an island shape, forming a magnetoresistance element, an insulator 7 formed on the lower electrode 1 in such a manner as to surround the layer 3 forming the magnetoresistance element, and an upper electrode 5 formed on the insulator 7 and the layer 3 forming the magnetoresistance element. The layer 3 forming the magnetoresistance element includes, in order from the side of the lower electrode 1, a magnetization fixed layer 3a, an intermediate layer 3b, and a magnetization free layer 3c. The magnetization free layer 3c, which is required to produce resonance oscillation based on a current, preferably is dimensioned to be equal to or smaller than 200 nm square in a cross-sectional area and on the order of 1 to 5 nm in film thickness, for example. The magnetization fixed layer 3a, when made of a single material, is required to have a thickness 10 times or more of the thickness of the magnetization free layer 3c. The magnetization fixed layer 3a may be comprised of a magnetic metal multilayer film that utilizes antiferromagnetic coupling.
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Inventors:
Yoshishige Suzuki
Shinji Yuasa
Akio Fukushima
Ershwin's Trampled Curl
Shinji Yuasa
Akio Fukushima
Ershwin's Trampled Curl
Application Number:
JP2006069533A
Publication Date:
April 27, 2011
Filing Date:
March 14, 2006
Export Citation:
Assignee:
Japan Science and Technology Agency
National Institute of Advanced Industrial Science and Technology
National Institute of Advanced Industrial Science and Technology
International Classes:
H03B15/00; H01L43/08; H01L43/10; H01P5/08
Domestic Patent References:
| JP2003229612A |
Other References:
SHINJI YUASA、他4名,Giant room-temperature magnetoresistance in single-crystal Fe/MgO/Fe magnetic tunnel junctions,Nature material,2004年12月,Vol.3 NO.12,p.868-p.871
S.I.Kiselev、他6名,Microwave oscillations of a nanomagnet driven by a spin-polarized current,Nature,2003年 9月25日,Vol.425,p.380-p.388
S.F.SUN,Oscillators by Means of Magnetoresistance Effect,Proceedings of the IRE,1962年,p.1484-p.1493
A.A.Tulapurkar、他8名,Spin-torque diode effect in magnetic tunnel junctions,Nature,2005年11月17日,p.339-p.342
鈴木義茂、他9名,スピン注入磁化反転素子の高周波特性,スピン流駆動デバイスの最前線,2006年 1月30日,p.49-p.55
S.I.Kiselev、他6名,Microwave oscillations of a nanomagnet driven by a spin-polarized current,Nature,2003年 9月25日,Vol.425,p.380-p.388
S.F.SUN,Oscillators by Means of Magnetoresistance Effect,Proceedings of the IRE,1962年,p.1484-p.1493
A.A.Tulapurkar、他8名,Spin-torque diode effect in magnetic tunnel junctions,Nature,2005年11月17日,p.339-p.342
鈴木義茂、他9名,スピン注入磁化反転素子の高周波特性,スピン流駆動デバイスの最前線,2006年 1月30日,p.49-p.55
Attorney, Agent or Firm:
Fuyuki Nagai
Takao Watanabe
Takao Watanabe