A REFINEMENT OF THE PARAMETERS OF ALPHA MANGANESE.

Abstract

The atomic parameters of alpha manganese, first determined by Bradley and Thewlis (1927), have been refined from an R index of 0.093 to a final R of 0.029 for fifty reflections. This refinement was based on an analysis of the integrated intensities of X-ray diffracted powder peaks measured independently at two laboratories. The lattice constant of alpha manganese was determined from liquid helium temperature up to room temperature and a change in the thermal expansion coefficient was found in the vicinity of the Neel temperature (95 K) although no structural change was observed in this region. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1967
Accession Number
AD0651205

Entities

People

  • Charles P. Gazzara
  • E. O. Hall
  • R. J. Weiss
  • Raymond M. Middleton

Organizations

  • United States Army Research Laboratory

Tags

DTIC Thesaurus Topics

  • Buildings And Structures
  • Coefficients
  • Intensity
  • Magnetic Transition Temperatures
  • Manganese
  • Neel Temperature
  • Physical Properties
  • Physics Laboratories
  • Reflection
  • Research Facilities
  • Thermal Expansion
  • X Rays

Readers

  • Materials Science and Engineering.