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Cambridge University Press, Microscopy and Microanalysis, 3(20), p. 687-691, 2014

DOI: 10.1017/s1431927614000336

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Electron Microscopy and Electron Energy-Loss Spectroscopy Study of Nd1−xSrxCoO3−δ (0≤x≤1) System

Journal article published in 2014 by Khalid Boulahya, Manar Hassan, Jesús C. G. Minguez ORCID, Stavros Nicolopoulos
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractA solid solution of Nd1−xSrxCoO3−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=√2xap, b=√2xap, and c=2xap (ap refers to lattice parameter of simple cubic perovskite), while SrCoO2.5 has an orthorhombic symmetry with a=√2xap, b=4xap, and c=√2xap. EELS analysis revealed that Co are in 3+ oxidation states but in different spin configurations.