首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
导模法生长蓝宝石晶体的退火工艺
作者:于海欧1 2 李红军2 徐军2 杨秋红1 胡克艳1 2 陈伟超2 
单位:1. 上海大学材料科学与工程学院 上海 200050 2. 中国科学院上海硅酸盐研究所 上海 200050 
关键词:蓝宝石单晶 导模法 包裹体 色心 退火 
分类号:O782
出版年,卷(期):页码:2012,40(6):905-909
DOI:
摘要:

  要:采用导模法生长了片状蓝宝石单晶。由于石墨发热体的高温挥发,使晶体尾部产生黑色絮状包裹体,晶体内部生成色心。为了消除片状蓝宝石晶体内的包裹体和色心,在不同气氛下对生长的晶体样品进行了退火处理。退火实验表明,含有包裹体的尾部样品在1 500 空气中退火20 h并以50 ℃/h的速率降温,可消除晶体内的碳包裹体,晶体变为无色、透明。在氢气中1 600 退火37 h后,F色心引起的205 nm的吸收峰和Fe3+所引起的200230 nm的吸收峰均被消除。表明高温氢气中退火是消除导模法生长蓝宝石晶体内部F色心和Fe3+吸收的最佳退火方法

read why people cheat in relationships signs of infidelity
abortion las vegas abortion clinics in the bronx abortion pictures

Abstract: Sapphire single crystal ribbon was grown via an edge defined film fed growth (EFG) method. The carbon volatilization in a graphite heater at high temperatures results in some black inclusions in tail crystal and color center in the crystal. In order to eliminate black inclusions and color center in the crystal, the sapphire crystal grown was annealed by different annealing processes. The black inclusions in tail crystal disappear and the crystal became colorless and transparent after annealing in air at a cooling velocity of 50 ℃/h and 1 500 ℃ for 20 h. For the crystal sample after annealing in H2 at 1 600 ℃ for 37 h,  the absorption peak at 205 nm caused by F color center and the absorption shoulder at 200230 nm caused by Fe3+ is disappeared. The results indicate that high temperature hydrogen annealing is a promising annealing method to eliminate the F color center and the absorption shoulder at 200230 nm caused by the Fe3+ in the sapphire crystal grown by EFG method.

open open My husband cheated on me
bystolic copay card click bystolic coupon voucher
基金项目:
上海市科学技术委员会(10ZR1434200)资助项目
作者简介:
第一作者:于海欧(1986—),女,硕士。 通信作者:李红军(1975—),男,博士,副研究员
married cheaters cheat on my wife click
online women that cheat with married men married woman looking to cheat
open cheat women go
amoxicillin amoxicillin amoxicillin
sumatriptan side effects sumatriptan side effects sumatriptan side effects
参考文献:

[1]  杨新波, 李红军, 毕群玉, . 导模法生长α-Al2O3:C晶体[J]. 无机材料学报, 2009, 24(2): 255258.

YANG Xinbo, LI Hongjun, BI qunyu, et al. J Inorg Mater (in Chinese), 2009, 24(2): 255258.

[2]  STEPANOV A V. Shaped crystals from the melt [J]. Soviet Phys Tech Phys, 1959, 4(1): 339352.

[3]  杨新波, 李红军, 徐军, . 导模法生长晶体研究进展[J]. 硅酸盐学报, 2008, 36(S1): 222227.

YANG Xinbo, LI Hongjun, XU Jun, et al. J Chin Ceram Soc, 2008, 36(S1): 222227.

[4]  殷顺湖, 颜声辉, 柴跃, . 下降法生长大尺寸白宝石单晶[J]. 人工晶体学报, 1993, 22(2): 128131.

YIN Shunhu, YAN Shenghui, CHAI Yue, et al. J Synth Cryst (in Chinese), 1993, 22(2): 128131.

[5]  徐军, 周国清, 邓佩珍, . 温梯法蓝宝石(Al2O3)晶体的脱碳去色退火研究[J]. 无机材料学报, 2005, 20(5): 10951098.

XU Jun, ZHOU Guoqing, DENG Peizhen, et al. J Inorg Mater (in Chinese), 2005, 20(5): 10951098.

[6]  BORODIN V A, IONOV A M, YALOVETS T N. Void formation upon annealing of shaped sapphire crystal [J]. J Cryst Growth, 1990, 104(1): 157164.

[7]  ZHOU Guoqing, DONG Yongjun, XU Jun. f 140 mm sapphire crystal growth by temperature gradient techniques and its color centers [J]. Mater Lett, 2006, 60(7): 901904.

[8]  MIKHAILIK V B, KRAUS H, WAHL D, et al. Luminescence studies of Ti-doped Al2O3 using vacuum ultraviolet synchrotron radiation [J]. Appl Phys Lett, 2005, 86(10): 101907101909.

[9]  LEE K H, CRAWFORD J H. Luminescence of the F center in sapphire [J]. Phys Rev B, 1979, 19(6): 32173221.

[10]  EVANS B D, STAPELBROEK M. Optical properties of the F+ center in crystalline Al2O3 [J]. Phys Rev B, 1978, 18(12): 70897098.

married cheaters why some women cheat click
why women cheat on husbands online link
redirect how to cheat why women cheat on men they love
My wife cheated on me women cheat because reasons married men cheat
my husband cheated on me redirect women who cheat on husband
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com