Effect of lanthanum replacement by strontium in lanthanum nickelate crystals synthetized using gelatin as organic precursor

La 1-xSr xNiO 3 (0 ≤ x ≤ 0.8) nanopowders were successfully synthesized using gelatin as a polymerization agent. Powders were calcined for 4 h at 700 and 900 °C and characterized using thermal analysis, X-Ray diffraction and scanning electron microscopy. Perovskite phase formation was achieved at 70...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2010-12, Vol.64 (24), p.2700-2703
Main Authors: Oliveira, F.S., Pimentel, P.M., Oliveira, R.M.P.B., Melo, D.M.A., Melo, M.A.F.
Format: Article
Language:English
Subjects:
ceramics
Crystallinity
Gelatins
Lanthanum
Nanocomposites
Nanomaterials
Nanostructure
Nickelates
nonomaterials
nonosized
perovskites
Roasting
Strontium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:La 1-xSr xNiO 3 (0 ≤ x ≤ 0.8) nanopowders were successfully synthesized using gelatin as a polymerization agent. Powders were calcined for 4 h at 700 and 900 °C and characterized using thermal analysis, X-Ray diffraction and scanning electron microscopy. Perovskite phase formation was achieved at 700 °C, with an increase in crystallinity and secundary phases forming in powders calcined at 900 °C. The structure of the lanthanum nickelate was confirmed as rhombohedral and transition to tetragonal structure occurred by partially substituting lanthanum with strontium.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2010.08.059