Optical property modification of ruby and sapphire by N-ion implantation

Effects of N-ion implantation on surface modification of synthetic single crystalline ruby (Cr-doped Al2O3) and sapphire (α-Al2O3) were studied. N ions at energy 120 keV were implanted to samples with doses ranging from 1×1016 to 1×1018 ions/cm2. Temperature studies ruled out the effect of ion-beam...

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Main Authors: Chaiwong C., Yu L.D., Schinarakis K., Vilaithong T.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-18244391203&partnerID=40&md5=a902ba8880deeef408037b824ab6bd31
http://cmuir.cmu.ac.th/handle/6653943832/4973
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-49732014-08-30T02:56:01Z Optical property modification of ruby and sapphire by N-ion implantation Chaiwong C. Yu L.D. Schinarakis K. Vilaithong T. Effects of N-ion implantation on surface modification of synthetic single crystalline ruby (Cr-doped Al2O3) and sapphire (α-Al2O3) were studied. N ions at energy 120 keV were implanted to samples with doses ranging from 1×1016 to 1×1018 ions/cm2. Temperature studies ruled out the effect of ion-beam heating and, therefore, the gemological modification was the direct result of the implanted ions and radiation damage. Optical measurements showed that the optical absorption of the ion-implanted ruby uniformly increased without observable characteristic changes in any wavelength bands, whereas for the high-dose ion-implanted sapphire, optical absorption in the short wavelength region became stronger. The refractive indices however showed the same decreasing trend in the higher dose ion-implanted samples for both types of crystals. N-ion implantation also caused blistering of the surface, as studied by scanning electron microscopy (SEM). The medium-dose (5×1017 ions/cm2) ion-implanted surfaces started to show drastic blistering, and the high-dose (1×1018 ions/cm2) ion implantation further resulted in amorphization of the ruby and sapphire surfaces. According to these data, the optical property changes are then attributed to the gem-material surface modification. © 2004 Elsevier B.V. All rights reserved. 2014-08-30T02:56:01Z 2014-08-30T02:56:01Z 2005 Article 02578972 10.1016/j.surfcoat.2004.08.115 http://www.scopus.com/inward/record.url?eid=2-s2.0-18244391203&partnerID=40&md5=a902ba8880deeef408037b824ab6bd31 http://cmuir.cmu.ac.th/handle/6653943832/4973 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description Effects of N-ion implantation on surface modification of synthetic single crystalline ruby (Cr-doped Al2O3) and sapphire (α-Al2O3) were studied. N ions at energy 120 keV were implanted to samples with doses ranging from 1×1016 to 1×1018 ions/cm2. Temperature studies ruled out the effect of ion-beam heating and, therefore, the gemological modification was the direct result of the implanted ions and radiation damage. Optical measurements showed that the optical absorption of the ion-implanted ruby uniformly increased without observable characteristic changes in any wavelength bands, whereas for the high-dose ion-implanted sapphire, optical absorption in the short wavelength region became stronger. The refractive indices however showed the same decreasing trend in the higher dose ion-implanted samples for both types of crystals. N-ion implantation also caused blistering of the surface, as studied by scanning electron microscopy (SEM). The medium-dose (5×1017 ions/cm2) ion-implanted surfaces started to show drastic blistering, and the high-dose (1×1018 ions/cm2) ion implantation further resulted in amorphization of the ruby and sapphire surfaces. According to these data, the optical property changes are then attributed to the gem-material surface modification. © 2004 Elsevier B.V. All rights reserved.
format Article
author Chaiwong C.
Yu L.D.
Schinarakis K.
Vilaithong T.
spellingShingle Chaiwong C.
Yu L.D.
Schinarakis K.
Vilaithong T.
Optical property modification of ruby and sapphire by N-ion implantation
author_facet Chaiwong C.
Yu L.D.
Schinarakis K.
Vilaithong T.
author_sort Chaiwong C.
title Optical property modification of ruby and sapphire by N-ion implantation
title_short Optical property modification of ruby and sapphire by N-ion implantation
title_full Optical property modification of ruby and sapphire by N-ion implantation
title_fullStr Optical property modification of ruby and sapphire by N-ion implantation
title_full_unstemmed Optical property modification of ruby and sapphire by N-ion implantation
title_sort optical property modification of ruby and sapphire by n-ion implantation
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-18244391203&partnerID=40&md5=a902ba8880deeef408037b824ab6bd31
http://cmuir.cmu.ac.th/handle/6653943832/4973
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