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Densification rate and phase structure changes during sintering of zinc titanate ceramics
(Elsevier Sci Ltd, Oxford, 2009)
Densification rate and phase structure changes during sintering of nanosized ZnTiO3 were studied. Sintering was performed in a dilatometer in two regimes: the first to 900 degrees C (heating rates 5, 10 and 15 degrees ...
Structure and properties of chemically synthesized BiFeO3. Influence of fuel and complexing agent
(Elsevier Sci Ltd, Oxford, 2015)
Perovskite, single multiferroic bismuth ferrite was prepared by two chemical methods: auto-combustion and soft chemical route. Influence of different fuels and complexing agents and thermal treatment on purity of bismuth ...
Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition
(Elsevier Sci Ltd, Oxford, 2017)
We have studied Ho-doped BiFeO3 nanopowders (Bi1-xHoxFeO3, x = 0-0.15), prepared via sol-gel method, in order to analyse the effect of substitution-driven structural transition on dielectric and ferroelectric properties ...
Improvement of barium titanate properties induced by attrition milling
(Elsevier Sci Ltd, Oxford, 2012)
Barium titanate powder was prepared by soft chemical process from polymeric precursors (modified Pechini process). The synthesized barium titanate (BT) powder was nanosized and the factor of agglomeration (F-agg) pointed ...
Influence of mechanical activation on sphene based ceramic material synthesis
(Elsevier Sci Ltd, Oxford, 2013)
Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibromilling for homogenization and activation of precursors. The mechanochemical process initially ...
High-voltage electrophoretic deposition of preferentially oriented films from multiferroic YMn2O5 nanopowders
(Elsevier Sci Ltd, Oxford, 2013)
Processing of the YMn2O5 powder is very challenging, since it decomposes to YMnO3 and Mn3O4 at temperatures close to 1180 degrees C, while samples consolidation commonly demands high temperatures. The main goal of this ...
Synthesis and characterization of tungsten carbide fine powders
(Elsevier Sci Ltd, Oxford, 2015)
Fine tungsten carbide (WC) powder was prepared by solid state reaction between tungsten powder (W) and activated carbon cloth as a new carbon (C) source. The effect of temperature and time of heat treatment as well as the ...
Hydrothermally assisted synthesis of YMnO3
(Elsevier Sci Ltd, Oxford, 2015)
In this work single phase hexagonal YMnO3 powders were prepared starting from Y(CH3COO)(3)center dot xH(2)O, Mn(CH3COO)(2)center dot 4H(2)O, KMnO4 and KOH using methods of conventional (280 degrees C for 6 h) or microwave ...
Donor-acceptor joint effect in barium titanate systems
(Elsevier Sci Ltd, Oxford, 2015)
Modified Pechini process was used to prepare nanopowders of barium titanate (BT) co-doped with different concentrations of niobium and manganese. Influence of dopants on the grain growth inhibition and microstructure ...
Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties
(Elsevier Sci Ltd, Oxford, 2015)
Thick films using starting nanopowders of TiO2 (anatase 99.7%) and alpha-Fe2O3 (hematite) mixed in the weight ratios 60:40 and 40:60 for thick film paste were fabricated by screen printing technology on an alumina substrate. ...