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[Co / Cu / NiFe / Cu] 다층박막의 자기저항효과에 관한 연구
정진봉(J. B. Jeong),박창만(C. M. Park),이기암(K. A. Lee),황도근(D. G. Hwang),이상석(S. S. Lee) 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.3
A study of the dependence of the magnetoresistance in glass\[Cu_(xÅ)\NiFe_(50Å)\Cu_(xÅ)\Co_(50Å)]_N (X = 8, 10, 14, 18, 22, 26, 28, 38, 48, 58 Å, N = 2, 3, 4, 10, 20) multilayers prepared by dc magnetron sputtering on the interlayer thickness of Cu (X), the number of multylayer(N) and annealing temperature has been performed. Resistance measurement were made by four terminal method, and the magnetic field applied to perpendicular and parallel for the current. The maximum magnetoresistance(MR) ratio(%) was appeared in the vicinity of 10 Å in Cu layer, and it was oscillated with the thickness of Cu. The MR ratio was increased with the number of layers N, however the ratio for the N = 4 layers decreased rather than the N = 3 layers. The dependence of the ratio on the annealing temperature was increased to 250 ℃.