Characterization of a nano-oxide layer in a pseudo spin valve by complex magneto-Impedance spectroscopy

W. C. Chien, C. K. Lo

研究成果: 雜誌貢獻期刊論文同行評審

摘要

The ac properties of a pseudo spin valve (PSV) consisting of NOLtop/Co/Cu/Co/Ni80Fe20/NOLbottom with a top and bottom nano-oxide layer (NOL) were studied as functions of NOL and thickness, d, by magneto impedance spectroscopy. The NOLs were formed by natural oxidizing the top and bottom ferromagnetic or Ta layers in situ. The increase in the thickness of NOL resulting in the increment of effective capacitance caused the shift of roll-off frequency from low to high. The frequency dependence behavior of this NOLtop/PSV/NOLbottom system can be modeled by equivalent circuit theory. PSV with a different NOL structure can be checked by such a nondestructive analysis method.

原文英語
頁(從 - 到)2624-2626
頁數3
期刊IEEE Transactions on Magnetics
42
發行號10
DOIs
出版狀態已發佈 - 2006 十月
對外發佈

ASJC Scopus subject areas

  • 電子、光磁材料
  • 電氣與電子工程

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