Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1491613 | Materials Research Bulletin | 2009 | 5 Pages |
Abstract
The subsolidus phase equilibria of the Li2O–Ta2O5–B2O3, K2O–Ta2O5–B2O3 and Li2O–WO3–B2O3 systems have been investigated mainly by means of the powder X-ray diffraction method. Two ternary compounds, KTaB2O6 and K3Ta3B2O12 were confirmed in the system K2O–Ta2O5–B2O3. Crystal structure of compound KTaB2O6 has been refined from X-ray powder diffraction data using the Rietveld method. The compound crystallizes in the orthorhombic, space group Pmn21 (No. 31), with lattice parameters a = 7.3253(4) Å, b = 3.8402(2) Å, c = 9.3040(5) Å, z = 2 and Dcalc = 4.283 g/cm3. The powder second harmonic generation (SHG) coefficients of KTaB2O6 and K3Ta3B2O12 were five times and two times as large as that of KH2PO4 (KDP), respectively.
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Gemei Cai, W.Y. Wang, M. Li, Y.F. Lou, Y.P. Sun, X.L. Chen,