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Updated: May 2, 2026

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
Published on: May 29, 2018
Electron microscopy and electron energy-loss spectroscopy study of Nd 1-x Sr x CoO 3-δ (0 ≤ x ≤ 1) system
Khalid Boulahya1, Manar Hassan1, Jesús C G Minguez1
11Departamento de Química Inorgánica, Facultad de Químicas,Universidad Complutense de Madrid,28040 Madrid,Spain.
Abstract:
A solid solution of Nd 1-x Sr x CoO 3-δ (with x=0, 1/3, 2/3, and 1) has been prepared and characterized by a combination of X-ray diffraction, electron microscopy, and electron energy-loss spectroscopy (EELS). The structural characterization indicates that Nd-doped materials present an orthorhombic symmetry with a=√2xa p, b=√2xa p, and c=2xa p (a p refers to lattice parameter of simple cubic perovskite), while SrCoO2.5 has an orthorhombic symmetry with a=√2xa p, b=4xa p, and c=√2xa p. EELS analysis revealed that Co are in 3+ oxidation states but in different spin configurations.
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