1. Crystal growth of ZrW2O8 and its optical and mechanical characterization
- Author
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Imteyaz Ahmad, Md., Mohanty, Gaurav, Cambrea, Lee R., Harris, Daniel C., Rajan, Krishna, and Akinc, Mufit
- Subjects
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CRYSTAL growth , *THERMAL expansion , *MECHANICAL properties of metals , *ZIRCONIUM tungstate , *OPTICAL properties of metals , *TEMPERATURE effect , *X-ray diffraction - Abstract
Abstract: ZrW2O8 is known for its isotropic negative thermal expansion over a wide of range of temperature from −272 to 777°C. However, ZrW2O8 melts incongruently at 1257°C and is stable only over a short temperature interval between 1105 and 1257°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 4mm 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. [Copyright &y& Elsevier]
- Published
- 2012
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