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Proceedings Paper

DC electrical response and impedance change induced by a microwave signal in a patterned ferromagnetic wire
Author(s): A. Yamaguchi; K. Motoi; A. Hirohata; N. Higashio; H. Miyajima
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Paper Abstract

We investigate the impedance and direct-current (DC) electric response induced by ferromagnetic resonance (FMR) in a single layered ferromagnetic wire. The impedance difference in the FMR state rectifies part of the radio-frequency (RF) current and induces the DC voltage. The impedance measurement using a vector network analyzer reveals the characteristics of the rectifying effect. A phenomenological model interpreting the impedance changes derived from the magnetization precession is proposed. The rectifying effect lies in the ability to demodulate the RF signal for wireless mobile communications.

Paper Details

Date Published: 4 September 2008
PDF: 15 pages
Proc. SPIE 7036, Spintronics, 703607 (4 September 2008); doi: 10.1117/12.798309
Show Author Affiliations
A. Yamaguchi, Keio Univ. (Japan)
K. Motoi, Keio Univ. (Japan)
A. Hirohata, Univ. of York (United Kingdom)
N. Higashio, Keio Univ. (Japan)
H. Miyajima, Keio Univ. (Japan)

Published in SPIE Proceedings Vol. 7036:
Manijeh Razeghi; Henri-Jean M. Drouhin; Jean-Eric Wegrowe, Editor(s)

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