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A study of spin rectification effect enhancement of microwave field by a PIFA
Author(s) -
Zhang Zhuoyue,
Huang Kama,
Zhang Bing,
Rasool Nouman
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22333
Subject(s) - spintronics , permalloy , rectification , optoelectronics , materials science , microwave , photovoltaics , antenna (radio) , rectenna , energy conversion efficiency , electrical engineering , monolayer , magnetic field , voltage , nanotechnology , photovoltaic system , telecommunications , physics , engineering , ferromagnetism , condensed matter physics , magnetization , quantum mechanics
The progress of spin rectification effect, which has the potential in powering the nanoscopic devices wirelessly, has been impeded by its low conversion efficiency. To solve this problem, a 5.8 GHz planar inverted F‐shaped antenna, which is designed to harvest radiated microwave power as well as foster a field enhanced area surrounding a permalloy (Py, Ni 80 Fe 20 ) monolayer, is presented. The electric and magnetic field are enhanced by ~17.5‐fold and ~ 45‐fold, respectively. With the proposed antenna, a photovoltage of 0.85 μV can be detected in the monolayer 1.5 m away from the transmitting antenna, with input power of 30 dBm. This work provides an effective method to enhance the spin rectification effect signal in the far field region and paves the way for spintronic devices to be potentially utilized in practical wireless applications, such as quantum information, photovoltaics, and nanogenerator.