Title page for etd-0607106-112058


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URN etd-0607106-112058
Author Pai-chun Tsao
Author's Email Address m933060033@student.nsysu.edu.tw
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Department Materials Science and Engineering
Year 2005
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Study on the Czochralski growth and phase inversion of LiAlO2 single crystals
Date of Defense 2006-06-01
Page Count 58
Keyword
  • Czochralski
  • Abstract Three LiAlO2 single crystals were grown by the conventional Czochralski method under the ambient pressure with pull rate with 2.0~3.0 mm/min, rotation rate with 20~30 rpm, and at a certain growth temperature with a home-made furnace. The total lengths of the the LiAlO2 bulks are between 13.3~20 cm, including its cone and the root. The relation between the configuration of LiAlO2 bulk and the ways of the heat transport on the Czochralski method was addressed. In order to identify the inversion properties of the LiAlO2 specimen, 90°C water was utilized to etch both sides of the LAO specimen, (100) and (-100) surfaces, and we analyzed them with an optical microscopy (OM). The experimental results showed that there are certain different etching characteristics on the both sides of the specimen. The density of etch pits revealed 1.4~2.8 × 104 cm-2 on the (-100) surface, and no phase transition had been found in the specimen which was annealed for 24 hours at 800℃.
    Advisory Committee
  • Der-shin Gan - chair
  • Pouyan Shen - co-chair
  • Ming-Chi Chou - advisor
  • Files
  • etd-0607106-112058.pdf
  • indicate access worldwide
    Date of Submission 2006-06-07

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