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Crystal imperfections in ice Ih.

Maurice de Koning1

  • 1Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, UNICAMP, 13083-859 Campinas, São Paulo, Brazil and Center for Computing in Engineering and Sciences, Universidade Estadual de Campinas, UNICAMP, 13083-861 Campinas, São Paulo, Brazil.

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This summary is machine-generated.

Crystal defects in hexagonal ice (ice Ih) are complex due to its molecular structure and proton disorder. This paper categorizes these imperfections by dimension, from point defects to dislocations and grain boundaries.

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Area of Science:

  • Materials Science
  • Solid State Physics
  • Crystallography

Background:

  • Hexagonal ice (ice Ih) exhibits unique crystal defect behavior.
  • Proton disorder and hydrogen bond asymmetry contribute to defect complexity.

Purpose of the Study:

  • To provide a comprehensive overview of crystal imperfections in ice Ih.
  • To organize defects based on their spatial extent (0D, 1D, 2D).

Main Methods:

  • Review and synthesis of existing literature on ice Ih defects.
  • Classification of defects by dimensionality: point defects, dislocations, and planar defects.

Main Results:

  • Detailed discussion of zero-dimensional defects: vacancies, interstitials, Bjerrum, and ionic defects.
  • Analysis of one-dimensional defects: dislocations and their role in plastic deformation.
  • Examination of two-dimensional defects: stacking faults and grain boundaries, comparing them to the free surface.

Conclusions:

  • Crystal defects in ice Ih are diverse and complex, influenced by its molecular characteristics.
  • Understanding these defects is crucial for predicting the macroscopic properties of ice.
  • Future research should focus on the interplay between defects and macroscopic ice behavior.