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Spectroscopic characteristics of titanium doped sapphire crystals grown by czochralski technique with automatic diameter control

Ibrahim, Zuhairi and Kusuma, Hamdan Hadi and Rohani, Md. Supar and Anuar Kamaruddin, Wan Hairul (2010) Spectroscopic characteristics of titanium doped sapphire crystals grown by czochralski technique with automatic diameter control. In: 16th International Conference on Crystal Growth (ICCG 2010), 2010, Shandong University & CETC Deqing Huaying Electronics Co., Ltd, China & Beijing International Convention Center Beijin.

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Abstract

This paper reports the growth and spectroscopic characteristics of Ti-doped Al2O3 crystals. The Ti3+:Al2O3 single crystals have been successfully grown by Czochralski method in argon atmosphere with Automatic Diameter Control (ADC) r.f heating for the first time. The effects of composition and properties of the crystals on the process variables, growth parameters, thermal designs are described. The crystal quality enhancement and control by recognizing, understanding, and minimizing or elimination of crystal defects are also described. The absorption and emission spectra were investigated. Absorption spectrum was obtained in the range of 200-800 nm by using on UV-Vis NIR spectrometer. The optimized growth conditions were identified based on the observation.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:A1. Adsorption; A2.Czochralski method; A2. Single crystal growth; B1. Sapphire
Subjects:Q Science
Divisions:Science
ID Code:24283
Deposited By: Liza Porijo
Deposited On:14 Aug 2012 00:35
Last Modified:14 Aug 2012 01:21

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