Barium titanate Barium titanate Barium titanate is an inorganic compound with chemical formula BaTiO. Barium titanate appears white as a powder and is transparent when prepared as large crystals. It is a ferroelectric ceramic material that exhibits the photorefractive effect and piezoelectric properties. It is used in capacitors, electromechanical transducers and nonlinear optics. The solid exists in one of five polymorphs depending on temperature. From high to low temperature, these crystal symmetries of the five polymorphs are hexagonal, cubic, tetragonal, orthorhombic, and rhombohedral crystal structure. All of these phases exhibit the ferroelectric effect apart from the cubic phase. The high temperature cubic
Stieff Silver years around the start of the 20th century, before starting a silver business of his own. The complete history of The Schofield Company can be found on the website. Schofield was also known as Herr-Schofield from 1905-1927. The factory was again expanded; doubled in size in 1971 to allow for the booming pewter manufacturing business. Pewter became the major business of Stieff as sales of Sterling Silver waned since the 1960s. Sterling Silver hollow ware was made at Stieff until 1999, but pewter became the star of the company in the 1970s and 1980s. Stieff was the official maker of