Isothermal in situ observation of crystal growth in Li2B4O7 glass

被引：10
|
作者：
Kim, SJ [1 ]
Kim, JE [1 ]
Yang, YS [1 ]
机构：
[1] Pusan Natl Univ, Dept Phys, Res Ctr Dielect & Adv Matter Phys, Pusan 609735, South Korea
来源：
SOLID STATE COMMUNICATIONS | 2002年 / 122卷 / 3-4期
关键词：
disordered systems; crystal growth; phase transitions; time resolved optical spectroscopies;
D O I：
10.1016/S0038-1098(02)00117-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report in situ optical studies for the kinetics of crystal growth in Li2B4O7 glass. It has been found that the crystals grow up to the large size of 30-50 mum before they impinge on each other and linearly grow with time at various temperatures. We have also performed isothermal differential scanning calorimetry (DSC) measurements for the comparison of growth kinetics with in situ optical measurements. The Avrami exponent that is used to describe the crystallization kinetics has been determined to be 4 with DSC measurements, indicating that the crystallization mechanism is in the interface-controlled growth with a constant nucleation rate. This DSC investigation agrees well with the result of in situ optical observations. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：135 / 138
页数：4
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