A Mössbauer spectroscopy investigation of SrFe1−xScxO3−δ perovskites - Archive ouverte HAL Access content directly
Journal Articles Solid State Sciences Year : 2010

A Mössbauer spectroscopy investigation of SrFe1−xScxO3−δ perovskites

Abstract

Polycrystalline samples of oxygen deficient perovskites SrFe1−xScxO3−δ (0 ≤ x ≤ 0.5) have been synthesized by direct solid state reactions. Each compound has been stabilized with two different oxygen stoichiometries. The structural study shows, firstly, the good cationic homogeneity of the samples and, secondly, that the Sc and Fe atoms are randomly distributed over the same crystallographic site, whatever the scandium content. This implies that no anionic order is possible. A detailed Mossbauer spectroscopy study clearly shows that the substitution of scandium for iron involves an oxygen content decrease which decreases the tetravalent iron content until its total disappearance for x = 0.5. The evolutions of the isomer shift, the quadrupolar splitting and the relative intensity versus the Sc3+ content are depicted in the present paper.
Not file

Dates and versions

hal-02264228 , version 1 (06-08-2019)

Identifiers

Cite

Youssef Rizki, Jean-Marie Le Breton, Emeric Folcke, Luc Lechevallier, Yohann Bréard, et al.. A Mössbauer spectroscopy investigation of SrFe1−xScxO3−δ perovskites. Solid State Sciences, 2010, 12 (5), pp.739-744. ⟨10.1016/j.solidstatesciences.2010.02.027⟩. ⟨hal-02264228⟩
22 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More