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Journal of Materials Science

, Volume 40, Issue 13, pp 3347–3353 | Cite as

Characterization of low angle grain boundaries in yttrium orthovanadate

  • Joel B. Lebret
  • M. Grant NortonEmail author
  • David F. Bahr
  • David P. Field
  • Kelvin G. Lynn
Article

Abstract

Single crystals of Nd:YVO4 grown with the Czochralski technique frequently exhibit light scattering defects that are detrimental to their lasing and optical properties. Defects in the form of low angle grain boundaries have been characterized in what are nominally ‘single crystals’. The misorientation angles of the boundaries were determined to be typically < 1°, which corresponds to formation energies of approximately 1 Jm−2. It was found that dislocations generated during crystal growth and cooling have enough mobility in certain growth directions to form low angle grain boundaries through polygonization. Despite the relatively high energies the boundaries were stable, being immobile at annealing temperatures up to 97% of the melting point (2083 K). Suggestions are made to reduce or eliminate polygonization, including the addition of atoms with a size either much larger or smaller than Y3+.

Keywords

Polymer Melting Point Optical Property Crystal Growth Yttrium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • Joel B. Lebret
    • 1
  • M. Grant Norton
    • 1
    Email author
  • David F. Bahr
    • 1
  • David P. Field
    • 1
  • Kelvin G. Lynn
    • 1
  1. 1.School of Mechanical and Materials EngineeringWashington State UniversityPullmanUSA

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