Peculiarities of LiB3O5 crystallization from melts studied by Raman spectroscopy

被引：8
|
作者：
Surovtsev, N. V. [1 ]
Malinovsky, V. K. [1 ]
Solntsev, V. P. [2 ]
Davydov, A. V. [2 ]
Tsvetkov, E. G. [2 ]
机构：
[1] RAS, SB, Inst Automat & Electrometry, Novosibirsk 630090, Russia
[2] RAS, SB, Inst Geol & Mineraol, Novosibirsk 630090, Russia
来源：
JOURNAL OF CRYSTAL GROWTH | 2008年 / 310卷 / 15期
关键词：
nucleation; phase diagrams; growth from melt; borates;
D O I：
10.1016/j.jcrysgro.2008.05.010
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Specific features of melting and crystallization scenarios of lithium triborate LiB3O5 (0.25Li(2)O(center dot)0.75B(2)O(3)) are studied in situ by Raman spectroscopy. It is shown that the scenario depends on thermal history of the melt. In particular, it is possible to obtain both homogeneous and chemically inhomogeneous states of the melt at a temperature above the melting point. The factors favoring homogeneous melt and crystallization are discussed. It is shown that the Raman line near 135cm(-1) demonstrates clearly the soft-mode behavior, merging with 111 cm(-1) Raman line above 400 degrees C, and indicating a weak phase transition near this temperature. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：3540 / 3544
页数：5
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