Shear Pleasure: The Structure, Formation, and Thermodynamics of Crystallographic Shear Phases

Albert A. Voskanyan, Alexandra Navrotsky

Research output: Contribution to journalReview articlepeer-review

1 Scopus citations

Abstract

A renaissance of interest in crystallographic shear structures and our recent work in this remarkable class of materials inspired this review. We first summarize the geometrical aspects of shear plane formation and possible transformations in ReO3, rutile, and perovskite-based structures. Then we provide a mechanistic overview of crystallographic shear formation, plane ordering, and propagation. Next we describe the energetics of planar defect formation and interaction, equilibria between point and extended defect structures, and thermodynamic stability of shear compounds. Finally, we emphasize the remaining challenges and propose future directions in this exciting area.

Original languageEnglish (US)
Pages (from-to)521-540
Number of pages20
JournalAnnual Review of Materials Research
Volume51
DOIs
StatePublished - Jul 26 2021

Keywords

  • Crystallographic shear
  • Extended defects
  • Magnéli phases
  • Shear energetics
  • Shear structure
  • Wadsley-Roth

ASJC Scopus subject areas

  • Materials Science(all)

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