Growth And Application Of Ferroelectric Tungsten Bronze Family Crystals

The growth of large size, high quality tungsten bronze Sri_xBaxNb206 (SBN) and Ba -x Srx K1- Na Nbs01.5 (BSKNN) ferroelectric crystals has now made it possible to conduct extensive pry opey rty evaluations of these materials for potential electro-optic, photorefrac-tive, and millimeter wave applications. Recent developments in these bronzes are discussed along with results on doped material for photorefractive device applications which show sub-stantial improvement in photorefractive sensitivity and speed over undoped material. Tung-sten bronze morphotropic phase boundary materials such as Pb,_x Bax Nb206 and Ba2_4Sr,NaNb5015, are also discussed as highly promising new materials for future device applications.