High Pressure X-ray Diffraction Study of Titanium Disulfide
A high pressure angle dispersive synchrotron x-ray diffraction study of titanium disulfide (TiS2) was carried out to pressures of 45.5 GPa in a diamond-anvil cell. We observed a phase transformation of TiS2 beginning at about 20.7 GPa. The structure of the high pressure phase needs further identification. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K0T, was determined to be 45.9 {+-} 0.7 GPa with its pressure derivative, K'0T, being 9.5 {+-} 0.3 at pressures lower than 17.8 GPa. It was found that the compression behavior of TiS2 is anisotropic along the different axes. The compression ratio of the c-axis is about nine times larger than the a-axis when pressures are lower than 1 GPa. It suddenly decreases to three times larger at pressures of about 3 GPa. This ratio shows a linear decrease with a slope of negative 0.048 at pressures below phase transformation.
- Research Organization:
- Brookhaven National Laboratory (BNL) National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 980231
- Report Number(s):
- BNL--93149-2010-JA
- Journal Information:
- Journal of Physics: Condensed Matter, Journal Name: Journal of Physics: Condensed Matter Vol. 21
- Country of Publication:
- United States
- Language:
- English
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