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

Ping Wei | Zendy; Mario Bieringer | Zendy; L. M. D. Cranswick | Zendy; Anthony Petric | Zendy

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

Author(s) -

Ping Wei,

Mario Bieringer,

L. M. D. Cranswick,

Anthony Petric

Publication year - 2009

Publication title -

journal of materials science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.813

H-Index - 177

eISSN - 1573-4803

pISSN - 0022-2461

DOI - 10.1007/s10853-009-4042-2

Subject(s) - materials science , neutron diffraction , spinel , manganese , rietveld refinement , crystallography , crystal structure , x ray crystallography , lattice constant , solid solution , analytical chemistry (journal) , diffraction , chemistry , metallurgy , optics , physics , chromatography

Copper\u2013manganese oxides were analyzed by in situ high-temperature powder neutron and X-ray diffraction to investigate their crystal structure. Cu\u2013Mn 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\u2013Mn 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.Peer reviewed: YesNRC publication: Ye

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