The sintering is an essential step in the processing of ceramics materials. A number researchers have reported new techniques for sintering. However, general, process still demands high temperatures. This paper reports results cold ZnO-BaTiO3 composites. microstructural, structural, and electric properties composite were studied. We obtained densities (>95%) pure ZnO composition with 10 wt% BaT...

Thermal Expansion Behavior of Biocompatible Hydroxyapatite-BaTiO3 Composites for Bone Substitutes S. Reddy a , A. K. Dubey b , B. Basu b , R. Guo a & A. S. Bhalla a a Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX-78249, USA b Laboratory for Biomaterials, Department of Materials Science and Engineering, Indian Institute of Technology, Kanp...

We have investigated the doping-induced local structural and electronic effects in recently developed low band gap room temperature ferroelectric Mn–Nb co-doped BaTiO3. Experimental theoretical Raman spectroscopies are utilized to quantify Ti off-centering, identified be intrinsic origin of ferroelectricity these systems. Mn Nb exhibit contrasting doping behaviors that remarkable on BaTiO3 func...

PURPOSE Perovskites are greatly used nowadays in many technological applications because of their high permittivity, more specifically in the form of aqueous solutions, for MRI dielectric shimming. In this study, full dielectric characterizations of highly concentrated CaTiO3 /BaTiO3 water mixtures were carried out and new permittivity maxima was reached. METHODS Permittivity measurements wer...

With concerns regarding climate change, pollution, and a limited supply of fossil fuels, photovoltaics are an attractive alternate energy source. Within the field of photovoltaics, thin film organic solar cells are alluring due to their potential low cost, mechanical flexibility, and ease of fabrication. However, there are many drawbacks that need to be overcome such as incomplete photon absorp...

Using DFT methods we have studied structure, equation of state, and phase behavior of BaTiO3. We have identified the pressure induced phase transformations from the rhombohedral to orthorhombic structure at ca. 5 GPa and from tetragonal phase to cubic phase at ca. 7.5 GPa. INTRODUCTION BaTiO3 is an important example perovskite structured ceramic displaying ferroelectric property. At high temper...

The geometrical, chemical and ferroelectric properties of a new nanoscale short-period three-component SrTiO3/BaTiO3/PbTiO3 perovskite superlattice are investigated using a first principles density functional approach. The study focuses on varying the thickness of each component in the superlattice and determining the resulting lattice distortion and total polarization. Thicknesses of up to thr...

We present and discuss the results of surface relaxation rumpling computations for ReO3, WO3, SrTiO3, BaTiO3 BaZrO3 (001) surfaces employing a hybrid B3LYP or B3PW description exchange correlation. In particular, we perform first O-terminated ReO3 WO3 surfaces. most cases, according to our both terminations BO2- O, AO-terminated BaTiO3, SrTiO3 upper layer atoms shift downwards, towards bulk, se...