Structural aspects in crystal growth of anhydrous borates

被引：76

作者：

Leonyuk, NI

机构：

[1] Dept. Cristal. Crystallochemistry, Geology Faculty, Moscow State University

来源：

JOURNAL OF CRYSTAL GROWTH | 1997年 / 174卷 / 1-4期

关键词：

polycomponent melt crystallization; anhydrous borate structures; inorganic polymers;

D O I：

10.1016/S0022-0248(96)01164-5

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A crystallochemical interpretation of acid-base properties was developed for the numerous anhydrous berates. A quantitative estimation was made of the correlation between the ratio of the numbers of B3+/O2- ions and the oxygen activity coefficient. The stability of borate structures depends on the delocalization of formal charges of the BnOm anions as a result of their polymerization. This analysis and experimental studies consistently explain the high activation energy of borate crystallization by the polymerization of BO3 triangles and BO4 tetrahedra in their melts and fluxed melts. It also sets forth the judicious choices of phase systems for the growth of borate crystals. In particular, in order to obtain the orthoborate crystals, a wide range of flux agents can be proposed which destroy boron-oxygen polymers and intensify mass transfer in the fluxed systems.

引用

页码：301 / 307

页数：7

共 18 条

[1]

ALSHINSKAIA LI, 1979, DOKL AKAD NAUK SSSR+, V245, P582

[2] CRYSTAL-GROWTH AND CHARACTERIZATION OF INBO3-TB-3+ [J].

CHAMINADE, JP ;

GARCIA, A ;

POUCHARD, M ;

FOUASSIER, C ;

JACQUIER, B ;

PERRETGALLIX, D ;

GONZALEZMESTRES, L .

JOURNAL OF CRYSTAL GROWTH, 1990, 99 (1-4) :799-804

[3] NEW NONLINEAR-OPTICAL CRYSTAL - LIB3O5 [J].

CHEN, CT ;

WU, YC ;

JIANG, AD ;

WU, BC ;

YOU, GM ;

LI, RK ;

LIN, SJ .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (04) :616-621

[4] DESIGN AND SYNTHESIS OF AN ULTRAVIOLET-TRANSPARENT NONLINEAR-OPTICAL CRYSTAL SR2BE2B2O7 [J].

CHEN, CT ;

WANG, YB ;

WU, BC ;

WU, KC ;

ZENG, WL ;

YU, LH .

NATURE, 1995, 373 (6512) :322-324

[5] OPTICAL, MECHANICAL, AND THERMAL-PROPERTIES OF BARIUM BORATE [J].

EIMERL, D ;

DAVIS, L ;

VELSKO, S ;

GRAHAM, EK ;

ZALKIN, A .

JOURNAL OF APPLIED PHYSICS, 1987, 62 (05) :1968-1983

[6]

Emsley J., 1991, The Elements

[7]

FEIGELSON RS, 1990, PROG CRYST GROWTH CH, V20, P115, DOI 10.1016/0146-3535(90)90013-I

[8]

KESZLER DA, 1994, MATER RES SOC SYMP P, V329, P15

[9]

Leonyuk N. I., 1983, CRYSTAL CHEM ANHYDRO

[10] Recent developments in the growth of RM(3)(BO3)(4) crystals for science and modern applications applications [J].

Leonyuk, NI .

PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS, 1995, 31 (3-4) :279-312

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