@article{ART001337191},
author={P. Maneeratanasarn and P. Wathanakul and Kim， Young-chool and Choi， Hyun-min and 방신영 and Bonggeun Choi and Kwang Bo Shim},
title={Micro-structural defects in ruby samples from Mong Hsu, Myanmar},
journal={Journal of the Korean Crystal Growth and Crystal Technology},
issn={1225-1429},
year={2009},
volume={19},
number={2},
pages={90-94}
TY - JOUR
AU - P. Maneeratanasarn
AU - P. Wathanakul
AU - Kim， Young-chool
AU - Choi， Hyun-min
AU - 방신영
AU - Bonggeun Choi
AU - Kwang Bo Shim
TI - Micro-structural defects in ruby samples from Mong Hsu, Myanmar
JO - Journal of the Korean Crystal Growth and Crystal Technology
PY - 2009
VL - 19
IS - 2
PB - The Korea Association Of Crystal Growth, Inc.
SP - 90
EP - 94
SN - 1225-1429
AB - Mong Hsu rubies from Myanmar were heat treated in oxidizing (oxygen) atmosphere at 1650oC for 1 hour. The investigations of the micro-structural defects in the samples before and after heat treatment have been carried out by the variety of analysis techniques of FTIR, UV-VIS-NIR and SEM-EDS. It was found that after heat treatment the dark blue cores region were disappeared and turned to orange red color with the presence of the dense cloudy brownish colored tiny particles in and near former blue zoning. As-received ruby samples only revealed the presence of FTIR absorption peaks of
diaspore, boehmite and O-H stretching, at 1986, 2115 and 3078/3319 cm−1
, respectively. The UV-VIS-NIR absorption of asreceived and heat treated ruby samples similarly showed peaks at 405, 554 and 693 nm associated with Cr3+, but for the same samples, the absorption peak of heat-treated ruby samples at 693 nm was somewhat stronger than that of the untreated ruby samples. Especially the presence of Cr3+ peaks at 659 and 675 nm was found obviously in as-received ruby samples only. The SEM-EDS investigation disclosed the micro-porous defect structures commonly related to the core
regions of the untreated ruby samples, which after heat treatment in an oxidizing environment those defect features have been dissolved into the host phase resulting in the lightening or disappearance of the dark coloration of ruby core.
KW - Ruby;Heat treatment;SEM-EDS
DO -
UR -
ER -
P. Maneeratanasarn, P. Wathanakul, Kim， Young-chool, Choi， Hyun-min, 방신영, Bonggeun Choi and Kwang Bo Shim. (2009). Micro-structural defects in ruby samples from Mong Hsu, Myanmar. Journal of the Korean Crystal Growth and Crystal Technology, 19(2), 90-94.
P. Maneeratanasarn, P. Wathanakul, Kim， Young-chool, Choi， Hyun-min, 방신영, Bonggeun Choi and Kwang Bo Shim. 2009, "Micro-structural defects in ruby samples from Mong Hsu, Myanmar", Journal of the Korean Crystal Growth and Crystal Technology, vol.19, no.2 pp.90-94.
P. Maneeratanasarn, P. Wathanakul, Kim， Young-chool, Choi， Hyun-min, 방신영, Bonggeun Choi, Kwang Bo Shim "Micro-structural defects in ruby samples from Mong Hsu, Myanmar" Journal of the Korean Crystal Growth and Crystal Technology 19.2 pp.90-94 (2009) : 90.
P. Maneeratanasarn, P. Wathanakul, Kim， Young-chool, Choi， Hyun-min, 방신영, Bonggeun Choi, Kwang Bo Shim. Micro-structural defects in ruby samples from Mong Hsu, Myanmar. 2009; 19(2), 90-94.
P. Maneeratanasarn, P. Wathanakul, Kim， Young-chool, Choi， Hyun-min, 방신영, Bonggeun Choi and Kwang Bo Shim. "Micro-structural defects in ruby samples from Mong Hsu, Myanmar" Journal of the Korean Crystal Growth and Crystal Technology 19, no.2 (2009) : 90-94.
P. Maneeratanasarn; P. Wathanakul; Kim， Young-chool; Choi， Hyun-min; 방신영; Bonggeun Choi; Kwang Bo Shim. Micro-structural defects in ruby samples from Mong Hsu, Myanmar. Journal of the Korean Crystal Growth and Crystal Technology, 19(2), 90-94.
P. Maneeratanasarn; P. Wathanakul; Kim， Young-chool; Choi， Hyun-min; 방신영; Bonggeun Choi; Kwang Bo Shim. Micro-structural defects in ruby samples from Mong Hsu, Myanmar. Journal of the Korean Crystal Growth and Crystal Technology. 2009; 19(2) 90-94.
P. Maneeratanasarn, P. Wathanakul, Kim， Young-chool, Choi， Hyun-min, 방신영, Bonggeun Choi, Kwang Bo Shim. Micro-structural defects in ruby samples from Mong Hsu, Myanmar. 2009; 19(2), 90-94.
P. Maneeratanasarn, P. Wathanakul, Kim， Young-chool, Choi， Hyun-min, 방신영, Bonggeun Choi and Kwang Bo Shim. "Micro-structural defects in ruby samples from Mong Hsu, Myanmar" Journal of the Korean Crystal Growth and Crystal Technology 19, no.2 (2009) : 90-94.
