X-ray diffraction and FTIR spectroscopy of heat treated R2O3:3Ga2O3:4B2O3 systems

被引：10

作者：

Beregi, E

Watterich, A

Madarász, J

Tóth, M

Polgár, K

机构：

[1] Hungarian Acad Sci, Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

[2] Budapest Univ Technol & Econ, Inst Gen & Analyt Chem, Budapest, Hungary

[3] Hungarian Acad Sci, Lab Geochem Res, H-1525 Budapest, Hungary

来源：

JOURNAL OF CRYSTAL GROWTH | 2002年 / 237卷

关键词：

X-ray diffraction; borates; rare-earth compounds; non-linear optic materials;

D O I：

10.1016/S0022-0248(01)02042-5

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

In the R2O3:3Ga(2)O(3):4B(2)O(3), systems (R-La, Nd, Sm, Gd, Ho, Y, Er and Yb), X-ray diffraction and infrared absorption spectroscopy were used to study the solid-state reactions in the 575-1050degreesC temperature range. In some samples (R = Sm, Gd, Ho, Er and Y) huntite (RGa3(BO3)(4)) phases accompanied by RBO3 and GaBO3 intermediate phases were identified. However in the systems of R2O3:3Ga(2)O(3):4B(2)O(3) for R = La3+, Nd3+ and Yb-3divided by. instead of the expected huntite phases, La-, Nd-metaborate or YbGa(BO3)(2) dolomite type phases were formed. Detailed XRD of the rare-earth gallium borates are presented for the first time. Based on the above results. some chemical reactions were assumed for the processes. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：874 / 878

页数：5

共 7 条

[1] Solid-state reactions in Y2O3:3Al2O3:4B2O3 system studied by FTIR spectroscopy and X-ray diffraction [J].