Crystal growth of ZrW2O8 and its optical and mechanical characterization

被引：9
作者：
Ahmad, Md. Imteyaz [1 ]
Mohanty, Gaurav [1 ]
Cambrea, Lee R. [2 ]
Harris, Daniel C. [2 ]
Rajan, Krishna [1 ]
Akinc, Mufit [1 ]
机构：
[1] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA
[2] USN, Air Syst Command China Lake, China Lake, CA 93555 USA
来源：
JOURNAL OF CRYSTAL GROWTH | 2012年 / 343卷 / 01期
关键词：
Growth from melt; Single crystal growth; Inorganic compound; Tungstates; NEGATIVE-THERMAL-EXPANSION; ELASTIC-MODULUS; RAMAN; NANOINDENTATION; INDENTATION; COMPOSITES; PARAMETERS; TUNGSTATE; HARDNESS;
D O I：
10.1016/j.jcrysgro.2011.12.081
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
ZrW2O8 is known for its isotropic negative thermal expansion over a wide of range of temperature from 272 to 777 degrees C. However, ZrW2O8 melts incongruently at 1257 degrees C and is stable only over a short temperature interval between 1105 and 1257 degrees C. This makes the growth of single crystals a formidable challenge. In order to study the intrinsic properties of this compound, a repeatable, viable single crystal growth strategy is required. Here we report a simple, self-seeding, self-fluxing single crystal growth process which resulted in single crystals of ZrW2O8 up to about 4 mm in size. Grown crystals were characterized by X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy. Mechanical properties of the crystals were studied using nanoindentation. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：115 / 121
页数：7
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