Properties of Fe-based Soft magnetic Thin Film with Hybrid Structures

Hybrid 구조의 Fe계 연자성 박막의 특성

  • 송재성 (한국전기연구소 박형전기소자 T.F.T) ;
  • 이원재 (한국전기연구소 박형전기소자 T.F.T) ;
  • 허정섭 (경남대학교 신소재공학부) ;
  • 김현식 ((주)매트론 기술연구소) ;
  • 오영우 (경남대학교 신소재공학부)
  • Published : 2000.11.01

Abstract

Magnetic properties and microstructures of Fe$\_$93-x/Zr$_3$B$_4$Ag$\_$x/ thin films were investigated as a function of addition of element Ag, (X$\_$Ag/=0 to 6 at.%) and annealing temperature, T$\_$a/=300$\^{C}$ to 600$\^{C}$. In the case of adding Ag, magnetic properties of Fe$\_$93-x/Zr$_3$B$_4$Ag$\_$x/ thin films were improved than those of Ag-free Fe$\_$93/Zr$_3$B$_4$thin films. The prominent soft magnetic properties with coercivity of 1.1 Oe, saturation magnetization of 2.2 T and permeability of 5400 at 50㎒ were obtained from Fe$\_$88/Zr$_3$B$_4$Ag$\_$5/ thin film annealed was lower than that of Fe-base or Co-base thin films reported previously. Such enhanced magnetic properties are presumably attributed to the format in ultra fine grains. Also, the reduced eddy current loss in the annealed sample is due to refined micro magnetic domains with increasing the amount of Ag in Fe$\_$93-x/Zr$_3$B$_4$Ag$\_$x/ thin films.