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Effect of Incorporating Method of Niobium on the Properties of Doped Barium Titanate Ceramics
Author(s) -
Yaseen Hanady,
Baltianski Sioma,
Tsur Yoed
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2006.00966.x
Subject(s) - materials science , barium titanate , differential scanning calorimetry , scanning electron microscope , analytical chemistry (journal) , dopant , dielectric spectroscopy , ceramic , transmission electron microscopy , mineralogy , doping , chemistry , electrochemistry , nanotechnology , composite material , chromatography , physics , optoelectronics , electrode , thermodynamics
A series of undoped and doped barium titanate powders were prepared and examined by: X‐ray diffraction, high‐resolution scanning electron microscopy, transmission electron microscopy, particle size, ζ‐potential, specific surface area, differential scanning calorimetry (DSC), impedance spectroscopy, and secondary‐ion mass spectrometry. The doped samples were prepared by two different methods: (1) coating powders with chlorides and (2) mixing chlorides in a hydrothermal reactor. Different distribution profiles of the dopant atoms were observed for the two incorporation methods. Two T C peaks were detected by DSC for samples doped by coating. Analysis of electrical measurements revealed time constant distributions that were more spread in samples that had a core–shell structure.