METHOD OF PREPARING MONOCRYSTALS OF ANTIMONY ORTHONIOBATE-BASED SOLID SOLUTIONS Russian patent published in 1998 - IPC

Abstract RU 2113556 C1

FIELD: crystal growing. SUBSTANCE: invention may find use in piezoelectric technics as well as in chemical engineering for creating various-destination composites. Monocrystals of invention are prepared from fluorine-containing aqueous solution, component of which is taken with concentration of potassium fluoride 38-43 and hydrogen peroxide 4-5 wt %. Starting material is a preliminarily synthesized reagent with formula (Sb_0,6Bi_0,4)NbO₄.. Process is carried out at 400-450 C, pressure 650-770 atm, temperature gradient 0.6-0.8 oC/cm, and liquid to solid phase volume ratio (1,1-1.3):(0.2-0.4). EFFECT: increased yield of (85- 92%) and lowered phase transition. 2 tbl

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RU 2 113 556 C1

Authors

Popolitov V.I.

Aleksandrenkov V.P.

Bagrov V.V.

Pavlov V.A.

Krjuchkov V.V.

Dates

1998-06-20—Published

1995-10-04—Filed