The layered borates Ba{sub 3}M(BO{sub 3}){sub 3} (M = Dy, Ho, Y, Er, Tm, Yb, Lu, and Sc)

Journal Article · Tue Nov 01 04:00:00 EST 1994 · Chemistry of Materials

DOI:https://doi.org/10.1021/cm00047a021· OSTI ID:98746

Cox, J R; Keszler, D A; Huang, J ^[1]

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1. Oregon State Univ., Corvallis, OR (United States)

A new family of borates of formulation Ba{sub 3}M(BO{sub 3}){sub 3} (M = Dy, Ho, Y, Er, Tm, Yb, Lu, and Sc) has been synthesized. The structure of the Sc derivative has been determined by single-crystal X-ray methods. It crystallizes in space group P6{sub 3}cm with six formula units in a cell of dimensions a = 9.227(2), c - 17.135(3) {angstrom}, and V = 1227.2(5) {angstrom}{sup 3}. The structure contains layers of triangular planar BO{sub 3} groups that are interleaved by 9-coordinate Ba atoms and 6-coordinate Sc atoms. Analysis of powder X-ray diffraction data indicates that the analogues containing the M atoms listed above are isostructural to the Sc derivative. Analysis of photoluminescence and powder X-ray data for the solid solution Ba{sub 3}Y{sub 1-x}Eu{sub x}(BO{sub 3}){sub 3} reveals the maximum size of the M atom that can be incorporated into the structure. Thermal and melting characteristics for each of the M derivatives are also described. 14 refs., 8 figs., 4 tabs.

• Sponsoring Organization: USDOE
• OSTI ID: 98746
• Journal Information: Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 11 Vol. 6; ISSN CMATEX; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
BARIUM COMPOUNDS
BORON COMPOUNDS
CHEMICAL PREPARATION
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFERENTIAL THERMAL ANALYSIS
ORDER PARAMETERS
PHOTOLUMINESCENCE
PYROLYSIS
RARE EARTH COMPOUNDS
SCANDIUM COMPOUNDS
X-RAY DIFFRACTION