METHOD FOR PRODUCTION OF SINGLE CRYSTALS OF SOLID SOLUTIONS OF ANTIMONY ORTHOTANTALATE Russian patent published in 1998 - IPC

Abstract RU 2109856 C1

FIELD: pyro- and piezoelectricity and chemical technology for development of allied composite materials. SUBSTANCE: crystals are produced from aqueous mixed solution of fluorides. Initial material is used in the form of preliminarily synthesized Sb(SbSb_xTa_1-x) O₄, where x = 0.25 mole. Solution includes the following components, wt.-%: KF, 25-32; H₂O₂, 5-7; C₂H₂O₄, 1-3; with volumetric S:L ratio of (1.4-1.6):(0.3-0.4) and KF: H₂O₂:C₂H₂O₄ = (3-4):(0.3-0.4):(0.15-0.2). Process is carried out at temperature of 460-490 C, pressure is 690-750 atm, temperature drop is 7-14 C. EFFECT: higher efficiency. 2 tbl

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RU 2 109 856 C1

Authors

Popolitov V.I.

Aleksandrenkov V.P.

Bagrov V.V.

Pavlov V.A.

Krjuchkov V.V.

Dates

1998-04-27—Published

1996-01-23—Filed