Table 2: Structural and compositional parameters of bulk as-mixed and sintered CuO : Fe2O3 (2%) along with possible secondary phases from Rietveld Refinement of the X-ray data.

CuO : Fe2O3 (2%)
PhaseAs-mixedSintered (900°C/12h in air)

CuO  Å  Å
Monoclinic (C2/C)  Å  Å
 Å  Å
% of % of

Fe2O3  Å
Trigonal (R C)  Å
% of

CuFe2O4  Å
Cubic (Fd m)% of

Overall R factor8.0381.760

Overall goodness of the fit (σ)1.2232.643