Premium
Nano‐ and microcrystals of doped niobates
Author(s) -
MielewczykGryn A.,
Gdula K.,
Lendze T.,
Kusz B.,
Gazda M.
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000378
Subject(s) - microstructure , doping , lanthanum , materials science , dopant , scanning electron microscope , strontium , atmospheric temperature range , mineralogy , phase (matter) , grain size , analytical chemistry (journal) , chemical engineering , chemistry , metallurgy , inorganic chemistry , composite material , optoelectronics , physics , organic chemistry , chromatography , meteorology , engineering
A Fergusonite–type phase of acceptor‐doped lanthanum ortho‐niobate La 1‐ x A x NbO 4 (A = Ca, Mg or Sr) has been synthesised by molten salt synthesis route. The high temperature behaviour and microstructure of samples doped by magnesium, calcium and strontium have been studied. The high temperature X‐ray diffraction measurements in the temperature range from room temperature to 700 °C has been carried out. The scanning electron microscopy has been used to determine the samples microstructure and to compare the grain size of each material. The differences in the phase transition temperature and morphology of the samples, depending on the dopant, have been discussed. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)