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Paper Abstract and Keywords
Presentation 2016-06-09 13:25
Compositional dependence of Cr100-xTix texture-inducing layer underlying (002) textured bcc-Cr alloy seed layer for FePt-C based heat-assisted magnetic recording media
Seong-Jae Jeon, Shintaro Hinata, Saito Shin (Tohoku Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Cr100-xTix 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-Cr80Mn20 seed layer (bcc-SL). As-deposited TILs showed the amorphous phase in Ti content of 30 &#8804; x (at%) &#8804; 75. Particularly, films with 40 &#8804; x &#8804; 60 kept the amorphous phase against the heat treatment over 600 oC. 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 &#8804; x &#8804; 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 oC with having different FWHM of bcc-SL. Hysteresis loops showed that squareness (Mr/Ms) of the films increased from 0.87 to 0.95 when FWHM of bcc-SL decreased from 13.7 o to 3.8 o. 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.
Keyword (in Japanese) (See Japanese page) 
(in English) Amorphous Cr-Ti texture inducing layer / bcc-Cr alloy seed layer / Lateral grain growth / Hetero-epitaxial growth / L10 FePt-C granular film / Angular distribution of c-axis / /  
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Conference Information
Committee IEICE-MRIS MMS  
Conference Date 2016-06-09 - 2016-06-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Recording Systems, etc. 
Paper Information
Registration To IEICE-MRIS 
Conference Code 2016-06-MR-MMS 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Compositional dependence of Cr100-xTix texture-inducing layer underlying (002) textured bcc-Cr alloy seed layer for FePt-C based heat-assisted magnetic recording media 
Sub Title (in English)  
Keyword(1) Amorphous Cr-Ti texture inducing layer  
Keyword(2) bcc-Cr alloy seed layer  
Keyword(3) Lateral grain growth  
Keyword(4) Hetero-epitaxial growth  
Keyword(5) L10 FePt-C granular film  
Keyword(6) Angular distribution of c-axis  
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1st Author's Name Seong-Jae Jeon  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Shintaro Hinata  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Saito Shin  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2016-06-09 13:25:00 
Presentation Time 25 minutes 
Registration for IEICE-MRIS 
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Volume (vol) vol.40 
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