THE GROWTH OF SINGLE CRYSTALS OF DOPED AND UNDOPED YTTRIA AND YTTRIUM ALUMINATE IN A HOLLOW CATHODE ZONE REFINER.
Abstract
The work reported is concerned with the growth of both pure and neodymium doped Y2O3 and YAlO3 single crystals. The growth technique employed consisted of the direct growth from a surface tension supported molten zone, i.e., a float-zone process. A hollow cathode plasma served as the heat source for the generation of the molten zone. Sintered rods of Y2O3, and 1 Y2O3 : 1 Al2O3 were successfully fabricated. The stability of Y2O3 in the plasma environment was established by x-ray diffraction techniques and several Y2O3 crystals 1/8 in. in diameter by 1-in. long were grown. The crystals, however, were all cracked due to thermal fluctuations in the plasma. A new plasma gun is under construction to eliminate this problem.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 15, 1966
- Accession Number
- AD0482609