Deep reactive ion etching of alumina titanium carbide using chlorine-based plasma

© 2016 Elsevier B.V. Al 2 O 3 -TiC (AlTiC) burnish head is widely used in hard disk drive manufacturing process to smoothen magnetic media surface produced from metal deposition process. Vertical etched wall of air bearing surface burnish head is ideal fabrication target since it provides fly height...

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Main Authors: Pakpum C., Pussadee N.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84971597351&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/41323
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-413232017-09-28T04:20:33Z Deep reactive ion etching of alumina titanium carbide using chlorine-based plasma Pakpum C. Pussadee N. © 2016 Elsevier B.V. Al 2 O 3 -TiC (AlTiC) burnish head is widely used in hard disk drive manufacturing process to smoothen magnetic media surface produced from metal deposition process. Vertical etched wall of air bearing surface burnish head is ideal fabrication target since it provides fly height stability. Commonly used fluorine-based plasma etchant leads to an incline etched AlTiC wall due to redeposition of AlF 3 etch byproduct. This paper proposed the chlorine-based etching to improve etched wall profile due to etch byproduct volatility. A vapor pressure-temperature plot of potential etch byproducts in etching process was created to help design etching conditions that result in volatile etch byproducts. The BCl 3 /Cl 2 /Ar combinations were varied to obtain optimized etched wall profile, etch rate, and, etch selectivity between AlTiC and NiCr hard mask. It was found that 60 sccm BCl 3 : 60 sccm Cl 2 : 80 sccm Ar with 20 °C platen temperature and 5 mTorr processing pressure provided etched wall angle of 79° with 152 nm/min etch rate and 4.1:1 AlTiC:NiCr etch selectivity. 2017-09-28T04:20:33Z 2017-09-28T04:20:33Z 2016-11-25 Journal 02578972 2-s2.0-84971597351 10.1016/j.surfcoat.2016.05.076 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84971597351&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/41323
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2016 Elsevier B.V. Al 2 O 3 -TiC (AlTiC) burnish head is widely used in hard disk drive manufacturing process to smoothen magnetic media surface produced from metal deposition process. Vertical etched wall of air bearing surface burnish head is ideal fabrication target since it provides fly height stability. Commonly used fluorine-based plasma etchant leads to an incline etched AlTiC wall due to redeposition of AlF 3 etch byproduct. This paper proposed the chlorine-based etching to improve etched wall profile due to etch byproduct volatility. A vapor pressure-temperature plot of potential etch byproducts in etching process was created to help design etching conditions that result in volatile etch byproducts. The BCl 3 /Cl 2 /Ar combinations were varied to obtain optimized etched wall profile, etch rate, and, etch selectivity between AlTiC and NiCr hard mask. It was found that 60 sccm BCl 3 : 60 sccm Cl 2 : 80 sccm Ar with 20 °C platen temperature and 5 mTorr processing pressure provided etched wall angle of 79° with 152 nm/min etch rate and 4.1:1 AlTiC:NiCr etch selectivity.
format Journal
author Pakpum C.
Pussadee N.
spellingShingle Pakpum C.
Pussadee N.
Deep reactive ion etching of alumina titanium carbide using chlorine-based plasma
author_facet Pakpum C.
Pussadee N.
author_sort Pakpum C.
title Deep reactive ion etching of alumina titanium carbide using chlorine-based plasma
title_short Deep reactive ion etching of alumina titanium carbide using chlorine-based plasma
title_full Deep reactive ion etching of alumina titanium carbide using chlorine-based plasma
title_fullStr Deep reactive ion etching of alumina titanium carbide using chlorine-based plasma
title_full_unstemmed Deep reactive ion etching of alumina titanium carbide using chlorine-based plasma
title_sort deep reactive ion etching of alumina titanium carbide using chlorine-based plasma
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84971597351&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/41323
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