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- 저자 : V. Nevruzoğlu (검색결과 1 건)
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Magneto‑Impedance in Co35Fe65/Cu/Co35Fe65 Single and Bi‑layer Thin Films
G. Durak Yüzüak,E. Yüzüak,V. Nevruzoğlu 대한금속·재료학회 2020 ELECTRONIC MATERIALS LETTERS Vol.16 No.5
The magneto-impedance response in Co35Fe65/Cu/Co35Fe65 thin film magneto-impedance cells deposited by the thermalevaporation method has been studied with single and bilayer structures at the substrate temperature 300 K and 150 K. Whilethe thin film deposited at 300 K has BCC structure, the amorphous character is dominant for 150 K deposited ones. Entirefilms show soft magnetic behavior with high saturation magnetization (MS) and low coercive field (HC). Bilayer thin filmstructure reveals higher magneto-impedance values than single-layer thin films. The relation between the magneto-impedanceeffect and layered structure is discussed in terms of structural growing mechanism and scattering effect. The highest magnetoimpedancesensitivity (η) 37%/Oe is observed for the Co35Fe65/Cu/Co35Fe65 bilayer thin film. The HCand remanence ratio(MR/MS) values for single layer at 300 K, single and bilayer cells at 150 K are measured as 51, 158 and 253 Oe—0.48, 0.78,and 0.80, respectively. When η with the Soliton wave model is compared with the sample at room temperature, an increaseof over 1700% is observed. The difference between the classical growing method at 300 K and the Soliton wave model at150 K is the evidence of the logic of the work performed and its accuracy. The relatively high sensitivity is connected withinterlayer usage and low temperature-smaller particle size in Soliton model growth. The observed findings are of practicalimportance to develop future technological magnetic sensor applications with high sensitivity.
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