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Structure and properties of donor doped barium titanate prepared by citrate process
Niobium doped barium titanate was prepared using two procedures. First, doped barium titanate was prepared starting from citrate solutions of all components and second, pure barium titanate powder was obtained from the ...
Ferroelectric properties of mechanically synthesized nanosized barium titanate
(Taylor & Francis Ltd, 2005-01-01)
Barium titanate ceramics were prepared through mechanochemical synthesis starting from fresh prepared barium oxide and titanium oxide in rutile form. Mixture of oxides was milled in zirconia oxide jar in the planetary ...
Structure study of donor doped barium titanate prepared from citrate solutions
Barium titanates doped with Nb5+, and Y3+, were prepared. The starting powders were synthesized from citrate solutions by the Pechini process and partial Pechini process in two steps. Sintering was performed in the range ...
Vibrational spectra of barium oxalate hemihydrate
The infrared and Raman spectra of barium oxalate hemihydrate, BaC2O4 · 0.5H2O, were recorded and discussed on the basis of their structural peculiarities and in comparison with the spectra of the previously investigated ...
Mechanochemical synthesis of barium titanate
(Elsevier B.V., 2005-01-01)
A powder mixture of BaO and TiO2, was mechanochemically treated in a planetary ball mill in an air atmosphere for up to 4 h, using zirconium oxide vial and zirconium oxide balls as the milling medium. Mechanochemical ...
Effect of additives and powder preparation techniques on PTCR properties of barium titanate
(Elsevier B.V., 2003-02-28)
PTCR barium titanate has been prepared following two different powder preparation techniques: the solid-state reaction route and co-precipitation route for the comparison of results. The co-precipitation route produces ...
Size effect on structure and dielectric properties of Nb-doped barium titanate
(Elsevier B.V., 2003-12-20)
It is known that the dielectric properties of BaTiO3 (BT) are strongly dependent on its grain size. Coarse-grained ceramics of pure BT showed lower dielectric constant at room temperature then fine grained. Many authors ...
Ashcroft model potential study of lattice dynamics of alpha-iron and barium
(Sociedad Mexicana De FisicaCoyoacanMéxico, 1999)