Open AccessMicrostructural Study of Neodmium Nickelate Doped with Strontium Synthesized by Gelatin Method
Author(s) -
Rosane Maria Pessoa Betânio Oliveira,
Patrícia Mendonça Pimentel,
J.H. de Araújo,
Dulce Maria de Araújo Melo,
M. A. F. Melo,
Antônio Eduardo Martinelli
Publication year - 2013
Publication title -
advances in materials science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 42
eISSN - 1687-8442
pISSN - 1687-8434
DOI - 10.1155/2013/926540
Subject(s) - materials science , tetragonal crystal system , strontium , crystal structure , analytical chemistry (journal) , crystallography , physics , chemistry , chromatography , nuclear physics
In this work nickelate nanoparticles were synthesized using a simple and fast new route, which makes use of gelatin as an organic precursor in order to evaluate the performance of the synthesis method to obtain materials and the influence of the strontium replacement on the structural parameters of the powders. Samples of Nd2-xSrxNiO4 (x=0 and 0.4) were calcined at 700 and 900°C at a heating of 10°C/min for 4 hours. X-ray powder diffraction patterns were obtained for all the samples, and the Rietveld Method was applied in order to determine the crystallite size using Scherrer's equation, the lattice parameters, and phase concentration. The results obtained using these techniques confirmed that the main crystal structure consists of the distorted K2NiF4-type tetragonal I4/mmm. In addition, scanning electron microscopy images revealed the formation of nanosized particles
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