The layered borates Ba{sub 3}M(BO{sub 3}){sub 3} (M = Dy, Ho, Y, Er, Tm, Yb, Lu, and Sc)
- 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, Vol. 6, Issue 11; Other Information: PBD: Nov 1994
- Country of Publication:
- United States
- Language:
- English
Similar Records
Crystal structures and magnetic properties of lanthanide containing borates LnM(BO{sub 3}){sub 2} (Ln=Y, Ho–Lu; M=Sc, Cr)
The double borates Ba{sub 3}Ln(BO{sub 3}){sub 3}, Ln = La-Lu, Y