high purity lead titanate nanopowders in tetragonal form have been successfully prepared bycitric acid gel method using lead nitrate and tetra-n-butyl titanate as pb and ti sourcesrespectively and citric acid as complexing reagent. the precursors were calcined at varioustemperatures ranging from 450 °c to 600 °c for 2 h. fourier transform infraredspectroscopy (ft-ir), x-ray diffraction (xrd) an...

nowadays various methods are presented for synthesis of barium strontium titanate (bst) nanopowders with different morphology and properties. each of these (bst)s has got individual characterization that makes it suitable for a special application. every method has a special quality, causes it to have preference over the other methods. low processing temperature is a desired point which most of...

A homogeneously translucent titanate nanobelt (TNB) suspension was prepared through facile surface modification of pristine TNBs by polymer wrapping with poly(allylamine hydrochloride). The resultant TNB aqueous suspension was found to remain stable for months. The nonlinear optical (NLO) and optical limiting (OL) properties of the TNB suspension were then investigated. We found that the TNB su...

Integrated structure of titanate nanotubes and nanosheets is investigated for their optical, electronic and optoelectronic properties when combined with HCl doped polyaniline (PANI). HR-TEM, SEM and XRD were employed for detailed morphological and microstructural understanding of the orthorhombic titanate nanostructure. Chemisorbed oxygeneous groups are probed with Raman spectroscopy which are ...

We take another look at two compounds which have been discussed as possible realizations of “spin ice”, namely holmium titanate and dysprosium titanate. As we have earlier observed, holmium titanate does not display icelike behaviour at low temperatures because the long ranged dipolar interactions between spins are strong compared to the nearest neighbour interactions. We show, analytically, th...