THE STRUCTURE OF THE M'-PHASE OF YTAO4, A THIRD FERGUSONITE POLYMORPH,

Abstract

The M' -phase of fergusonite is closely related to the other known monoclinic form (M-phase), except that it has a halved b-axis and its space group is P2/a instead of I2. The structure of the M' -phase was determined for YTaO4 from three-dimensional diffractometer data, and its relationship to the other polymorphs is discussed. The lattice parameters of M' -YTaO are: a = 5.292A, b = 5.451A, c = 5.110A, beta = 96.44 deg., Z = 2. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1967
Accession Number
AD0656335

Entities

People

  • Gerard M. Wolten

Organizations

  • The Aerospace Corporation

Tags

DTIC Thesaurus Topics

  • Diffractometers
  • Geometry
  • Instrumentation
  • Mathematics
  • Measuring Instruments
  • Three Dimensional

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics

Technology Areas

  • Space