Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第24卷    第10期    总第187期    2014年10月

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文章编号:1004-0609(2014)10-2559-06
钴离子掺杂铝酸锌透明微晶玻璃的制备和光学特性
李 巍1, 2,陈文哲1, 3,郑 婵2

(1. 福州大学 材料科学与工程学院,福州 350116;
2. 福建工程学院 材料科学与工程学院,福州 350118;
3. 厦门理工学院 材料科学与工程学院,厦门 361024
)

摘 要: 用溶胶-凝胶法制备透明的钴离子掺杂铝酸锌块体微晶玻璃,采用差热-热重分析、X射线粉末衍射谱、傅里叶红外光谱分析和吸收光谱对热处理前后微晶玻璃的热学性能、显微结构以及光学特性进行了研究。结果表明:铝酸锌纳米晶平均晶粒尺寸为12~14 nm。在红外光吸收谱1200~1600 nm处有很强的吸收宽峰,对应四配位Co2+离子的4A24T1(4F)跃迁,且随着热处理温度的提高,吸收强度增强。通过计算,经1000 ℃热处理后样品的吸收截面系数为1.15×10-19 cm2,这表明微晶玻璃在铒玻璃激光器的被动调Q开关中具有潜在的应用前景。

 

关键字: 微晶玻璃;铝酸锌;钴离子;光学特性

Preparation and optical properties of Co2+ doped ZnAl2O4-SiO2 transparent glass ceramics
LI Wei1, 2, CHEN Wen-zhe1, 3, ZHENG Chan2

1. College of Materials Science and Engineering,Fuzhou University,Fuzhou 350116,China;
2. College of Materials Science and Engineering,Fujian University of Technology,Fuzhou 350118,China;
3. College of Material Science and Engineering, Xiamen University of Technology, Xiamen 361024, China

Abstract:The transparent Co2+:ZnAl2O4-SiO2 block glass ceramics with doping of transition metal ions Co2+ were synthesized by sol-gel method. The DSC-TG, X-ray diffraction, Fourier infrared spectrometer and visible and near-infrared absorption spectra were performed to study the microstructure and the optical properties of glass ceramics. The results show that the average size of the ZnAl2O4 nanocrystals is 12-14 nm. The glass ceramics exhibit a broad absorption band in the range of 1200-1600 nm. And the absorption coefficient enhances with the increase of heat-treating temperature, which is characteristic of 4A24T1(4F) transition from the tetrahedral Co2+ ions. The absorption cross section reaches 1.15×10-19 cm2 when the heat-treating temperature is up to 1000 ℃, which means that it can be applied in the passive Q-switch turnable laser.

 

Key words: glass ceramics; ZnAl2O4; Co2+ ion; optical property

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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