Equilibrium faceting formation in vicinal Al 2O 3 (0001) surface caused by annealing

R. Verre; R. G.S. Sofin; V. Usov; K. Fleischer; D. Fox; G. Behan; H. Zhang; I. V. Shvets

doi:10.1016/j.susc.2012.07.024

Equilibrium faceting formation in vicinal Al ₂O ₃ (0001) surface caused by annealing

R. Verre^*, R. G.S. Sofin, V. Usov, K. Fleischer, D. Fox, G. Behan, H. Zhang, I. V. Shvets

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20 اقتباسات (Scopus)

ملخص

We report on a heat-induced transformation of the surface of α-alumina (0001) crystals which have an off-cut in the [12̄10] direction. Annealing the crystal causes the surface to transform into a regular array of (0001) and (12̄16) facets. The resultant faceted morphology represents the equilibrium state of the system. It is demonstrated that the average terrace periodicity is determined by the annealing temperature. Possible causes for the surface rearrangement are also discussed. This method could be used for producing templates with controlled periodicity for growth of nanostructure arrays.

اللغة الأصلية	English
الصفحات (من إلى)	1815-1820
عدد الصفحات	6
دورية	Surface Science
مستوى الصوت	606
رقم الإصدار	23-24
المعرِّفات الرقمية للأشياء	https://doi.org/10.1016/j.susc.2012.07.024
حالة النشر	Published - ديسمبر 2012
منشور خارجيًا	نعم

ASJC Scopus subject areas

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الوصول إلى المستند

10.1016/j.susc.2012.07.024

الملفات والروابط الأخرى

قم بذكر هذا

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title = "Equilibrium faceting formation in vicinal Al 2O 3 (0001) surface caused by annealing",

abstract = "We report on a heat-induced transformation of the surface of α-alumina (0001) crystals which have an off-cut in the [1{\=2}10] direction. Annealing the crystal causes the surface to transform into a regular array of (0001) and (1{\=2}16) facets. The resultant faceted morphology represents the equilibrium state of the system. It is demonstrated that the average terrace periodicity is determined by the annealing temperature. Possible causes for the surface rearrangement are also discussed. This method could be used for producing templates with controlled periodicity for growth of nanostructure arrays.",

keywords = "Equilibrium state, Faceting, High temperature annealing, Sapphire",

author = "R. Verre and Sofin, {R. G.S.} and V. Usov and K. Fleischer and D. Fox and G. Behan and H. Zhang and Shvets, {I. V.}",

note = "Funding Information: We would like to thank Prof. S. Stoyanov for the helpful suggestions. This work has been funded by the Science Foundation of Ireland , Contract No. 06/IN.1/I91 , and was conducted under the framework of the INSPIRE programme, funded by the Irish Government's Programme for Research in Third Level Institutions, Cycle 4, National Development Plan 2007–2013 .",

year = "2012",

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doi = "10.1016/j.susc.2012.07.024",

language = "English",

volume = "606",

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journal = "Surface Science",

issn = "0039-6028",

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TY - JOUR

T1 - Equilibrium faceting formation in vicinal Al 2O 3 (0001) surface caused by annealing

AU - Verre, R.

AU - Sofin, R. G.S.

AU - Usov, V.

AU - Fleischer, K.

AU - Fox, D.

AU - Behan, G.

AU - Zhang, H.

AU - Shvets, I. V.

N1 - Funding Information: We would like to thank Prof. S. Stoyanov for the helpful suggestions. This work has been funded by the Science Foundation of Ireland , Contract No. 06/IN.1/I91 , and was conducted under the framework of the INSPIRE programme, funded by the Irish Government's Programme for Research in Third Level Institutions, Cycle 4, National Development Plan 2007–2013 .

PY - 2012/12

Y1 - 2012/12

N2 - We report on a heat-induced transformation of the surface of α-alumina (0001) crystals which have an off-cut in the [12̄10] direction. Annealing the crystal causes the surface to transform into a regular array of (0001) and (12̄16) facets. The resultant faceted morphology represents the equilibrium state of the system. It is demonstrated that the average terrace periodicity is determined by the annealing temperature. Possible causes for the surface rearrangement are also discussed. This method could be used for producing templates with controlled periodicity for growth of nanostructure arrays.

AB - We report on a heat-induced transformation of the surface of α-alumina (0001) crystals which have an off-cut in the [12̄10] direction. Annealing the crystal causes the surface to transform into a regular array of (0001) and (12̄16) facets. The resultant faceted morphology represents the equilibrium state of the system. It is demonstrated that the average terrace periodicity is determined by the annealing temperature. Possible causes for the surface rearrangement are also discussed. This method could be used for producing templates with controlled periodicity for growth of nanostructure arrays.

KW - Equilibrium state

KW - Faceting

KW - High temperature annealing

KW - Sapphire

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U2 - 10.1016/j.susc.2012.07.024

DO - 10.1016/j.susc.2012.07.024

M3 - Article

AN - SCOPUS:84866343484

SN - 0039-6028

VL - 606

SP - 1815

EP - 1820

JO - Surface Science

JF - Surface Science

IS - 23-24

ER -