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Paper Abstract and Keywords
Presentation 2015-06-05 11:00
Microstructure and magnetic properties of CoPtCr-SiO2 granular media deposited at high substrate temperature
Shintaro Hinata (Tohoku Univ.), Kim Kong Tham (TKK), Shin Saito (Tohoku Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Application of substrate heating during deposition of CoPtCr-SiO2 granular medium on a bumpy-surface Ru underlayer to increase perpendicular anisotropy energy Ku⊥ of the media by promoting atomic diffusion in magnetic grains was investigated. At substrate temperature Tsub = 343 oC, magnetic grains epitaxially grew on a flat-surface Ru underlayer. And randomly oriented spherical magnetic grains surrounded by SiO2 were segregated on it. Reason of the surface flattening of the bumpy Ru underlayer was recrystallization of Ru grains promoted by desorption of oxygen from Ru grains. To prevent the oxygen desorption and the recrystallization, CoCr-SiO2 buffer layer was introduced onto the Ru underlayer. Consequently, the bumpy surface morphology of the underlayer is maintained and columnar growth of the granular layer was realized under Tsub < 380 oC.
Keyword (in Japanese) (See Japanese page) 
(in English) CoPtCr-SiO2 / Ru / granular media / uniaxial magnetocrystalline anisotropy / heating substrate deposition / / /  
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Conference Information
Committee IEICE-MRIS MMS  
Conference Date 2015-06-04 - 2015-06-05 
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 2015-06-MR-MMS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Microstructure and magnetic properties of CoPtCr-SiO2 granular media deposited at high substrate temperature 
Sub Title (in English)  
Keyword(1) CoPtCr-SiO2  
Keyword(2) Ru  
Keyword(3) granular media  
Keyword(4) uniaxial magnetocrystalline anisotropy  
Keyword(5) heating substrate deposition  
1st Author's Name Shintaro Hinata  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Kim Kong Tham  
2nd Author's Affiliation Tanaka Kikinzoku Kogyo K. K. (TKK)
3rd Author's Name Shin Saito  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2015-06-05 11:00:00 
Presentation Time 25 minutes 
Registration for IEICE-MRIS 
Paper #  
Volume (vol) vol.39 
Number (no)  
Date of Issue  

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