Hall 이력곡선 분해에 의한 Co / Pd 다층박막에서의 Antiferromagnetism 및 Exchange Anisotropy 분석

다국어 초록 (Multilingual Abstract)

Co / Pd multilayered thin films with various ratios of Co sublayers to Pd sublayers(nCo /nPd = 1/4, 2/4, 3/4, 5/4) were fabricated at different substrate temperatures(R. T., 100, 150, 200 ℃) with the conventional vacuum evaporation method, and their Hall voltage hysteresis curves were measured. These Hall curves were decomposed on the basis of the superpose of the transverse Hall effect term from the magnetizations of Co and Pd sublayers and the magnetoresistivity term, by the optimal fitting method. In the results, both of the ferromagnetic and antiferromagnetic states coexisted through whole samples, and the uniaxial or unidirectional easy axis type Hall hysteresis curves occured were dependent upon the effects of the exchange anisotropy between both magnetic states and the domain wall pinning by the anti ferromagnet inclusions.