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논문 기본 정보

자료유형
학술저널
저자정보
Seong-Jae Jeon (Tohoku University) Shintaro Hinata (Tohoku University) Shin Saito (Tohoku University)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.21 No.1
발행연도
2016.3
수록면
35 - 39 (5page)

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초록· 키워드

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Cr<SUB>100-x</SUB>Ti<SUB>x</SUB> amorphous texture-inducing layers (TIL) were investigated to realize highly (002) oriented L1₀ FePt-C granular films through hetero-epitaxial growth on the (002) textured bcc-Cr<SUB>80</SUB>Mn<SUB>20</SUB> seed layer (bcc-SL). Asdeposited TILs showed the amorphous phase in Ti content of 30 ≤ x (at%) ≤ 75. Particularly, films with 40 ≤ x ≤ 60 kept the amorphous phase against the heat treatment over 600 ℃. It was found that preference of the crystallographic texture for bcc-SLs is directly affected by the structural phase of TILs. (002) crystallographic texture was realized in bcc-SLs deposited on the amorphous TILs (40 ≤ x ≤ 70), whereas (110) texture was formed in bcc-SLs overlying on crystalline TILs (x < 30 and x > 70). Correlation between the angular distribution of (002) crystal orientation of bcc-SL evaluated by full width at half maximum of (002) diffraction (FWHM) and a grain diameter of bcc-SL indicated that while the development of the lateral growth for bcc-SL grain reduces FWHM, crystallization of amorphous TILs hinders FWHM. L1₀ FePt-C granular films were fabricated under the substrate heating process over 600 ℃ with having different FWHM of bcc-SL. Hysteresis loops showed that squareness (M<SUB>r</SUB>/M<SUB>s</SUB>) of the films increased from 0.87 to 0.95 when FWHM of bcc-SL decreased from 13.7 ˚ to 3.8 ˚. It is suggested that the reduction of (002) FWHM affects to the overlying MgO film as well as FePt-C granular film by means of the hetero-epitaxial growth.

목차

1. Introduction
2. Experimental Procedure
3. Result and Discussion
4. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2016-428-002656061