Low temperature magneto-transport properties in bilayered magnetic anti-dot mircoarrays

doi:10.1016/j.apsusc.2014.06.195

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/104588

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题名:	Low temperature magneto-transport properties in bilayered magnetic anti-dot mircoarrays
作者:	Deshpande, N.-G.;Hwang, J.-S.;Seo, M.-S.;Yoo, Y.-J.;Rhee, J.-Y.;Kim, K.-W.;Shao, Y.-C.;Chen, K.-H.;Pong, W.-F.;Lee, Y.-P.
关键词:	Magnetic materials;Sputtering;Lithography;Magnetometer;XAFS;and Hysteresis
日期:	2014-09-30
上传时间:	2016-01-06 11:04:05 (UTC+8)
摘要:	Magneto-transport study on the photolithographically-patterned anti-dot micro-arrays of cobalt upper-layer over a uniform thin nickel under-layer has been carried out. Circular anti-dots in rhomboidal symmetry were fabricated. The magnetoresistance (MR) curves were recorded for magnetically-easy and -hard axes of the bilayer structure at various temperatures. In addition to anisotropic MR, at low temperatures, the MR data shows anomalous behavior with several kinks and plateau regions, indicating complex reversal phenomena. Further, decrease in temperature results in increase of MR average peak height, double splitting of MR peaks and broadening of MR peaks. Additionally, the exchange bias behavior was found in the transverse MR curve; while no significant exchange effect was seen in the longitudinal MR curve. Using energy dispersive spectrum and X-ray absorption spectra taken at Co L3,2-edge, the presence of CoO layer over the bilayer structure was detected; while the Ni under-layer remained deoxidized.
關聯:	Applied Surface Science 314, pp.453–457
DOI:	10.1016/j.apsusc.2014.06.195
显示于类别:	[物理學系暨研究所] 期刊論文

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