Journal of Materials Science

, 45:1056 | Cite as

In situ high-temperature X-ray and neutron diffraction of Cu–Mn oxide phases

  • Ping Wei
  • Mario Bieringer
  • Lachlan M. D. Cranswick
  • Anthony Petric
Article

Abstract

Copper–manganese oxides were analyzed by in situ high-temperature powder neutron and X-ray diffraction to investigate their crystal structure. Cu–Mn spinel was found to form a continuous solid solution with cubic symmetry between Mn3O4 and Cu2MnO4. A high-temperature phase with approximate composition Cu5Mn4O9 was shown to have hexagonal symmetry. The cation distribution and lattice parameters of Cu–Mn spinel were resolved through Rietveld refinement of in situ neutron diffraction data. The results demonstrated that the Cu ion has a lower octahedral site preference than manganese ions, and quenching is not a reliable method to determine the equilibrium structure in the system.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Ping Wei
    • 1
  • Mario Bieringer
    • 2
  • Lachlan M. D. Cranswick
    • 3
  • Anthony Petric
    • 1
  1. 1.Department of Materials Science and EngineeringMcMaster UniversityHamiltonCanada
  2. 2.Department of ChemistryUniversity of ManitobaWinnipegCanada
  3. 3.Canadian Neutron Beam CentreNational Research Council CanadaONCanada

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