Radio frequency magneto-impedance effect in spin tunneling junctions

Naoaki Hirabayashi, Hideo Kaiju, Kazuo Shiiki

研究成果: Article

抜粋

The effect of radio frequency magneto-impedance in spin tunneling jucntions Co/Al-oxide/Co fabricated on glass substrate was investigated by ion-beam sputtering. The junction impadence was measured by using the voltages of two cobalt electrodes and a standard resistor at room temperature over a frequency range of 0.1-100 MHz. It was observed that the magneto-impadence ratio exhibited a positive value at frequencies less than the roll-off frequency and a negative value at frequencies higher than the roll-off frequency. It was also observed that the imaginary part of the magneto-impedance ratio was positive throuout the frequency region measured and approached zero at high frequencies.

元の言語English
ページ(範囲)2061-2064
ページ数4
ジャーナルReview of Scientific Instruments
75
発行部数6
DOI
出版物ステータスPublished - 2004 6 1

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ASJC Scopus subject areas

  • Instrumentation

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