Structural defects in AFe₂O₄ (A = Zn, Mg) spinels

Manuel Gaudon (1) , Nathalie Pailhé (1) , Alain Wattiaux (1) , Alain Demourgues (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

(Zn²⁺/Mg²⁺)[Fe³⁺]₂O₄ spinel oxides can be refined as direct/fully inverted (respectively) spinels but considering cationic and anionic vacancies and/or interstitial atoms instead of a partial inversion rate of the A²⁺ and B³⁺ cations. The refinements results of the X-ray diffraction patterns and Mössbauer spectroscopy spectra are discussed and show the veracity of the new structural formalism.

Mots clés: Spinels; Crystal structure; Structural default; Inorganic compounds

Domaines: Matériaux

Manuel Gaudon, Nathalie Pailhé, Alain Wattiaux, Alain Demourgues. Structural defects in AFe₂O₄ (A = Zn, Mg) spinels. Materials Research Bulletin, 2009, 44 (3), pp.479-484. ⟨10.1016/j.materresbull.2008.12.005⟩. ⟨hal-00360264⟩