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Ching-Ming Lee,Lin-Xiu Ye,Jia-Mou Lee,Yu-Cyun Lin,Chao-Yuan Huang,J. C. Wu,Masakiyo Tsunoda,Migaku Takahashi,Te-ho Wu 한국자기학회 2011 Journal of Magnetics Vol.16 No.2
This study reports an alternative method for measuring the magnetoresistance of unpatterned magnetic tunnel junctions similar to the current-in-plane tunneling (CIPT) method. Instead of using microprobes, a series of point contacts with different spacings are coated on the top surface of the junctions and R-H loops at various spacings are then measured by the usual four-point probe method. The values of magnetoresistance and resistance-area products can be obtained by fitting the measured data to the CIPT theoretical model. The test results of two types of junctions were highly similar to those obtained from standard CIPT tools. The proposed method may help to accelerate the process for evaluating the quality of magnetic tunnel junctions when commercial CIPT tools are not accessible.
Mei-Feng Lai,Chen-Hung Huang,Ching-Wen Lou,Yu-Chun Chuang,Cyun-Yu Wei,Jia-Horng Lin 한국섬유공학회 2022 Fibers and polymers Vol.23 No.3
In this study, polypropylene (PP) and multi-walled carbon nanotubes (MWCNTs) are used to coat stainless steel(SS) wrapped yarns, the product of which is then fabricated into conductive textiles. Afterwards, the tensile properties,surface resistivity, and electromagnetic shielding effectiveness (EMSE) of conductive textiles are evaluated, therebydetermining the influences of the MWCNTs content. The test results show that using MWCNT can effectively improve themechanical properties of the coated yarns and conductive woven fabrics. In addition, 5 wt % of MWCNT provides the wovenfabrics with a lower surface resistivity and higher EMSE. The influences of the lamination angle and number of laminationlayers on EMSE are investigated, and the maximum EMSE of -49.89 dB occurs when the lamination angle is 0 °/90 °/0 °.