Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction

The presence of water vapour at high temperature oxidation has certain effects on ferritic alloy in comparison to dry environment. It is hypothesized that at high temperature; water vapour provides hydrogen, which will dissolve into ferritic alloy substrate and altering their electronic state at th...

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Main Authors:	Berahim, A N, Zaharudin, M Z, Ani, Mohd Hanafi, Arifin, S K
Format:	Conference or Workshop Item
Language:	English English English
Published:	IOP Publishing 2018
Subjects:	TA401 Materials of engineering and construction
Online Access:	http://irep.iium.edu.my/62455/ http://irep.iium.edu.my/62455/ http://irep.iium.edu.my/62455/ http://irep.iium.edu.my/62455/7/62455%20ffect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20SCOPUS.pdf http://irep.iium.edu.my/62455/13/62455_Effect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20height%20of%20Fe-Cr%20alloy%20heterojunction.pdf http://irep.iium.edu.my/62455/14/62455_Effect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20height%20of%20Fe-Cr%20alloy%20heterojunction_WoS.pdf

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recordtype	eprints
spelling	iium-624552018-08-02T02:48:55Z http://irep.iium.edu.my/62455/ Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction Berahim, A N Zaharudin, M Z Ani, Mohd Hanafi Arifin, S K TA401 Materials of engineering and construction The presence of water vapour at high temperature oxidation has certain effects on ferritic alloy in comparison to dry environment. It is hypothesized that at high temperature; water vapour provides hydrogen, which will dissolve into ferritic alloy substrate and altering their electronic state at the metal-oxide interface. This work aimed to clarify the change in electronic state of metal-oxide heterojunction with the presence of hydrogen/water vapour. In this study, the Schottky Barrier (SB) was created by sputtering Cr2O3 onto prepared samples using RF Magnetron sputtering machine. The existence of Fe/Cr2O3 junction was characterized by using XRD. The surfaces were observed by using Optical Microscope (OM) and Scanning Electron Microscope (SEM). The samples were then exposed in dry and humid condition at temperature of 473 K and 1073 K. In dry condition, 100% Ar is flown inside the furnace, while in wet condition mixture of 95% Ar and 5% H was used. I-V measurement of the junction was done to determine the Schottky Barrier Height(SBH) of the samples in the corresponding ambient. The results show that in Fe/Cr2O3 junction, with presence of hydrogen at temperature 473 K; the SBH was reduced by the scale factor of 1.054 and at 1073 K in wet ambient by factor of 1.068. Meanwhile, in Fe-Cr/Cr2O3 junction with presence of hydrogen, the value of SBH was increased by scale factor of 1.068 at temperature 473 K while at 1073 K, the SBH also increased by factor of 1.009. IOP Publishing 2018-01-30 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/62455/7/62455%20ffect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20SCOPUS.pdf application/pdf en http://irep.iium.edu.my/62455/13/62455_Effect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20height%20of%20Fe-Cr%20alloy%20heterojunction.pdf application/pdf en http://irep.iium.edu.my/62455/14/62455_Effect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20height%20of%20Fe-Cr%20alloy%20heterojunction_WoS.pdf Berahim, A N and Zaharudin, M Z and Ani, Mohd Hanafi and Arifin, S K (2018) Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction. In: International Conference on Advances in Manufacturing and Materials Engineering (ICAMME 2017), 8th-9th August 2017, Kuala Lumpur, Malaysia. http://iopscience.iop.org/article/10.1088/1757-899X/290/1/012013/pdf 10.1088/1757-899X/290/1/012013
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	TA401 Materials of engineering and construction
spellingShingle	TA401 Materials of engineering and construction Berahim, A N Zaharudin, M Z Ani, Mohd Hanafi Arifin, S K Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction
description	The presence of water vapour at high temperature oxidation has certain effects on ferritic alloy in comparison to dry environment. It is hypothesized that at high temperature; water vapour provides hydrogen, which will dissolve into ferritic alloy substrate and altering their electronic state at the metal-oxide interface. This work aimed to clarify the change in electronic state of metal-oxide heterojunction with the presence of hydrogen/water vapour. In this study, the Schottky Barrier (SB) was created by sputtering Cr2O3 onto prepared samples using RF Magnetron sputtering machine. The existence of Fe/Cr2O3 junction was characterized by using XRD. The surfaces were observed by using Optical Microscope (OM) and Scanning Electron Microscope (SEM). The samples were then exposed in dry and humid condition at temperature of 473 K and 1073 K. In dry condition, 100% Ar is flown inside the furnace, while in wet condition mixture of 95% Ar and 5% H was used. I-V measurement of the junction was done to determine the Schottky Barrier Height(SBH) of the samples in the corresponding ambient. The results show that in Fe/Cr2O3 junction, with presence of hydrogen at temperature 473 K; the SBH was reduced by the scale factor of 1.054 and at 1073 K in wet ambient by factor of 1.068. Meanwhile, in Fe-Cr/Cr2O3 junction with presence of hydrogen, the value of SBH was increased by scale factor of 1.068 at temperature 473 K while at 1073 K, the SBH also increased by factor of 1.009.
format	Conference or Workshop Item
author	Berahim, A N Zaharudin, M Z Ani, Mohd Hanafi Arifin, S K
author_facet	Berahim, A N Zaharudin, M Z Ani, Mohd Hanafi Arifin, S K
author_sort	Berahim, A N
title	Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction
title_short	Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction
title_full	Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction
title_fullStr	Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction
title_full_unstemmed	Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction
title_sort	effect of dissolved hydrogen on schottky barrier height of fe-cr alloy heterojunction
publisher	IOP Publishing
publishDate	2018
url	http://irep.iium.edu.my/62455/ http://irep.iium.edu.my/62455/ http://irep.iium.edu.my/62455/ http://irep.iium.edu.my/62455/7/62455%20ffect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20SCOPUS.pdf http://irep.iium.edu.my/62455/13/62455_Effect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20height%20of%20Fe-Cr%20alloy%20heterojunction.pdf http://irep.iium.edu.my/62455/14/62455_Effect%20of%20dissolved%20hydrogen%20on%20Schottky%20barrier%20height%20of%20Fe-Cr%20alloy%20heterojunction_WoS.pdf
first_indexed	2023-09-18T21:28:30Z
last_indexed	2023-09-18T21:28:30Z
_version_	1777412352683016192

Effect of dissolved hydrogen on Schottky barrier height of Fe-Cr alloy heterojunction

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