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Master's Dissertation
DOI
10.11606/D.54.1979.tde-01062010-152200
Document
Author
Full name
Jose Pedro Andreeta
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1979
Supervisor
Title in Portuguese
Crescimento de monocristais de LiF pelos métodos Bridgmann e Czochralski.
Keywords in Portuguese
Bridgmann
Czochralski
Monocristais
Abstract in Portuguese
Este trabalho descreve a construção e operação de dois fornos especiais para crescimento de monocristais pelas técnicas de Bridgmann e Czochralski. Vários cristais de LiF puros e dopados foram crescidos nesses fornos e suas propriedades testadas. O forno para crescimento pela técnica de Bridgmann pode operar até 1800°C em atmosferas agressivas não oxidantes (por exemplo HF seco). Com esses fornos podem ser crescidos monocristais de MnF2 e PbF2. O forno para crescimento pela técnica de Czochralski permite a preparação de monocristais de Nitreto de Litio (Li3N) partindo do Lítio metálico e de Nitrogênio gasoso sob pressão. Os fornos e sua operação são descritos em detalhes permitindo sua reprodução.
Title in English
Growth of single crystals of LiF using Bridgmann and Czochralski methods.
Keywords in English
Bridgmann
Czochralski
Single crystals
Abstract in English
This work describes the construction and operation of two special furnaces for crystal growth using Bridgmann and Czochralski techniques. Several LiF single crystals, pure and doped, were grown in these furnaces and their properties tested. The Bridgmann furnace allows operation at temperatures as high as 1800°C and no-oxidational agressive growing conditions (dry HF gas for example). In this furnace it is possible to grow MnF2 and PbF2 single crystals. The Czochralski furnace allows the growth of Li3N starting from Li metal and gaseons N2 under pressure. The furnaces and their operation are described in details allowing their reproduction.
 
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JoseAndreetaM.pdf (4.08 Mbytes)
Publishing Date
2010-06-01
 
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