Crystal Growth of New Functional Materials for Electro-Optical Applications

Abstract

High quality fluoride and oxide single crystals for optical, piezoelectric and other applications have been grown by advanced crystal growth techniques. Corquitiite- and Perovskite-type fluoride single crystals - LiCaAlF6, LiSrAlF6, KMgF3 and BaLiF3 - have been grown for solid state UV laser applications, and as window materials for next generation optical lithography. La3Nb(0.5)Ga(5.5)O14 and La3Ta(0.5)Ga(5.5)O14 piezoelectric single crystals of size and quality comparable to La3Ga5SiO14 (langasite), have been produced. The piezoelectric and device properties of the crystals were investigated. A search for new langasite-type materials was also performed. Promising new structural materials, Al2O3/RE3Al5O12 (RE=rare earth) eutectic fibers, have been grown by the micro-pulling-down (micro-PD) technique. Undoped and doped Beta-Ga2O3 single crystals have been grown by the floating zone technique as promising transparent conductive oxides.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2001
Accession Number
ADP011867

Entities

People

  • A. Yoshikawa
  • E. G. Villora
  • K. Shimamura
  • T. Fukuda

Organizations

  • Tohoku University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Crystal Growth
  • Crystal Structure
  • Crystallization
  • Crystals
  • Electrical Conductivity
  • Electrical Properties
  • Fluorides
  • Laser Applications
  • Lasers
  • Materials
  • Materials Laboratories
  • Optical Materials
  • Phase Transformations
  • Piezoelectric Crystals
  • Single Crystals
  • Temperature Gradients

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition