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Paper Abstract and Keywords
Presentation 2021-02-05 13:45
Characteristic properties of Co-Zr alloy as a single-layer barrier
Yuki Yamada, Masataka Yahagi, Junichi Koike (Tohoku Univ.) SDM2020-56 Link to ES Tech. Rep. Archives: SDM2020-56
Abstract (in Japanese) (See Japanese page) 
(in English) The purpose of this work is to replace the thick double layer of Ta liner and TaN barrier with a single layer of Co alloy having liner/barrier functions with thermally stable amorphous structure. The CALPHAD method was employed to calculate T0 curve as an indicator of amorphous stability in various Co alloy systems. Co-Zr system was predicted to be a potential candidate. Based on the calculated results, ultra-thin Co-Zr films were investigated for adhesion and barrier property. Cu/Co-Zr/SiO2 samples exhibited a good barrier property. However, the Co-Zr layer was decomposed at high temperature, which caused an increase in film resistivity due to Co diffusion to the Cu overlayer.
Keyword (in Japanese) (See Japanese page) 
(in English) LSI / Cu interconnect / diffusion barrier / CALPHAD method / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 359, SDM2020-56, pp. 7-10, Feb. 2021.
Paper # SDM2020-56 
Date of Issue 2021-01-29 (SDM) 
ISSN Online edition: ISSN 2432-6380
Copyright
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reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SDM2020-56 Link to ES Tech. Rep. Archives: SDM2020-56

Conference Information
Committee SDM  
Conference Date 2021-02-05 - 2021-02-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SDM 
Conference Code 2021-02-SDM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Characteristic properties of Co-Zr alloy as a single-layer barrier 
Sub Title (in English)  
Keyword(1) LSI  
Keyword(2) Cu interconnect  
Keyword(3) diffusion barrier  
Keyword(4) CALPHAD method  
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1st Author's Name Yuki Yamada  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Masataka Yahagi  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Junichi Koike  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2021-02-05 13:45:00 
Presentation Time 20 minutes 
Registration for SDM 
Paper # SDM2020-56 
Volume (vol) vol.120 
Number (no) no.359 
Page pp.7-10 
#Pages
Date of Issue 2021-01-29 (SDM) 


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