Low temperature preparation of nanocrystalline solid solution of strontium barium niobate by chemical process

SBN60, strontium-barium niobate at 100 K

The title compound, Sr0.6Ba0.4Nb2O6 (strontium barium niobium oxide), belongs to the group of strontium-barium niobates with varying composition of Sr and Ba. Their general formula can be written as Sr x Ba1 - x Nb2O6. Below the Curie temperature, T c , these materials indicate ferroelectric properties. The Curie temperature for SBN60 is equal to 346±0.5 K so the structure is in the ferroelectr...

LOW TEMPERATURE SYNTHESIS OF NANOCRYSTALLINE MgAl2O4 SPINEL VIA SUCROSE PROCESS

Abstract: Nanocrystalline MgAl2O4 spinel powder was synthesized using metal nitrates and a polymer matrix-based composed of sucrose and polyvinyl alcohol (PVA). The precursor and the calcined powders were characterized by simultaneous thermal analysis (STA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). According to XRD res...

Low-loss planar optical waveguides in strontium barium niobate crystals formed by ion-beam implantation.

Planar optical waveguides have been formed in strontium barium niobate single crystals by either proton or heliumion implantation. The profiles of the ordinary and the extraordinary refractive indices are deduced from dark-line mode spectroscopy. Optical barriers with depths to Deltan(e) = 2.6% for protons and Deltan(e) = 5.5% for helium are obtained. By proton implantation we find a very low i...

Electrical fixing of waveguide channels in strontium-barium niobate crystals

We demonstrate a new method of electrical fixing of waveguiding channels in strontium-barium niobate. The method is applicable to both bulk material and planar SBN waveguides. Waveguiding is achieved for extraordinarily polarized light. We suggest that the fixing is based on a partial depoling of the crystal rather than on internal electric fields.

Non-Collinear Second Harmonic Generation in Strontium Barium Niobate