|標題:||Characterization of a nano-oxide layer in a pseudo spin valve by complex magneto-impedance spectroscopy|
|作者:||Chien, W. C.|
Peng, T. Y.
Hsieh, L. C.
Lo, C. K.
Yao, Y. D.
Department of Materials Science and Engineering
|關鍵字:||magneto-capacitance;magneto-impedance;nano-oxide layer;pseudo spin valve;roll-off frequency|
|摘要:||The ac properties of a pseudo spin valve (PSV) consisting of NOLtop/Co/Cu/Co/Ni80Fe20/NOLbottom with a top and bottom nanooxide 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 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.|
|期刊:||IEEE TRANSACTIONS ON MAGNETICS|
|Appears in Collections:||Conferences Paper|
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