FIELD: chemical technology, in particular production of polycrystalline batch for wurtzite-structure single crystal growth.
SUBSTANCE: claimed method for production of polycrystalline batch for wurtzite-structure oxide single crystal growth of formula LiMeO2, wherein Me refers aluminum or gallium, includes mixing of metal (Me) oxide with lithium carbonate in stoichiometric ratio and sintering in crucible. Starting materials before mixing are crushed to provide particles of size not more than 2 mum and heated in limits of their stability. Sintering is carried out at temperature being equal to 87-88 % of single crystal melting point, for 6 h in alundum crucible. Said wurtzite-structure single crystals are useful in substrate preparation for epitaxial growth of gallium nitride. Method of present invention makes it possible to obtain batch in form of shaped pallets with various size in limits of crucible diameter.
EFFECT: batch for high quality single crystal growth.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCTION OF SINGLE CRYSTAL LITHIUM ALUMINATE | 2003 |
|
RU2245402C2 |
| METHOD FOR PRODUCING OF BATCH FOR GROWTH OF SINGLE CRYSTAL STRONG-NIGACITE AND STRONTANGACITE WITH CALCIUM GALLOGERMANATE STRUCTURE | 2003 |
|
RU2241793C2 |
| PROCESS OF PREPARATION OF MIXTURE TO GROW MONOCRYSTALS OF GALLOSILICATES WITH STRUCTURE OF CALCIUM GALLOGERMANATE | 2001 |
|
RU2194808C1 |
| METHOD OF SOLID-PHASE SYNTHESIS OF CHARGE FOR GROWING MONOCRYSTALS OF LANTHANUM GALLIC SILICATE | 1998 |
|
RU2147048C1 |
| METHOD OF SOLID-PHASE SYNTHESIS OF MIXTURE FOR GROWING OF SINGLE CRYSTALS OF LANTHANUM-GALLIUM TANTALATE (LaGaTaO) | 2000 |
|
RU2160797C1 |
| METHOD OF SOLID-PHASE SYNTHESIS OF MIXTURE FOR GROWING OF SINGLE CRYSTALS OF LANTHANUM-GALLIUM NIOBATE (LaGaNbO) | 2000 |
|
RU2160796C1 |
| MONOCRYSTAL FOR MANUFACTURE OF DISKS IN SURFACE ACOUSTIC WAVE DEVICES AND METHOD OF OBTAINING MONOCRYSTAL | 2000 |
|
RU2172362C2 |
| MONOCRYSTAL WITH CALCIUM GALLOGERMANATE STRUCTURE FOR MANUFACTURE OF DISKS IN DEVICES ON SURFACE-ACOUSTIC WAVES AND METHOD OF PRODUCTION OF SUCH CRYSTAL | 2003 |
|
RU2250938C1 |
| METHOD OF PRODUCTION OF CHARGE FOR GROWING MONOCRYSTALS ON BASE OF OXIDES OF RARE-EARTH METALS, TRACE METALS AND REFRACTORY METALS OR SILICON | 2005 |
|
RU2296824C1 |
| PROCEDURE FOR SOLID PHASE SYNTHESIS OF CHARGE FOR GROWTH OF MONO CRYSTALS OF LANTHANUM-GALLIUM TANTALATE | 2009 |
|
RU2413041C2 |
