LHPG GROWN CRYSTAL FIBERS OF MGTIO3-CATIO3 EUTECTIC SYSTEM

Fiber crystals of MgTiO3-CaTiO3 eutectic system are grown using the la ser heated pedestal growth (LHPG) technique. The as grown crystal fibe rs of composition (Mg0.95Ca0.05)TiO3 contain MgTiO3 and CaTiO3 crystal s, and are analyzed by X-ray powder diffraction, SEM and EPMA Crystal fibers grown between 1650 and 1680 degrees C represent 2:3 and 1:3 com posite configuration, while those grown between 1700 and 1720 degrees C show 1:3 connectivity. CaTiO3 crystal grows along the fiber growth d irection and MgTiO3 phase forms the body matrix of the fiber. The diel ectric constants, loss factors of(Mg0.95Ca0.05)TiO3 and CaTiO3 ceramic s are measured and their relationship to crystal growth conditions and microstructure are discussed. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.