Akira Yoshiasa et al 2009 J. Phys.: Conf. Ser. 190 012119 doi:10.1088/1742-6596/190/1/012119
Akira Yoshiasa1, Hiroshi Arima2, Maki Okube3, Hiroshi Fukui4, Akihiko Nakatsuka5, Yoshinori Katayama6 and Osamu Ohtaka7
Show affiliationsXAFS measurements near the Zr K-edge for the P21/c and Pbca ZrO2 phases with particle size of 62 nm and 0.50 μm were performed under pressure up to 7.8 GPa using a multi-anvil high-pressure device and synchrotron radiation at BL14B1, SPring-8, Hyogo. XANES spectra change gradually near the phase transition region of 3.0–4.8 and 4.8–7.8 for bulk and nano particles. The second-nearest Zr-Zr distance in nano particle is 0.02 Å longer than that in bulk particle. It was found that the nano particle is more compressible comparing with the bulk particle and transforms to the Pbca phase at certain specific Zr-O and Zr-Zr distances. The magnitudes of σ2 for Zr-Zr distance in the nano particle are significantly larger because of the static disorder near the surface.
78.70.Dm X-ray absorption spectra
Condensed matter: electrical, magnetic and optical
Issue 1 (2009)
Akira Yoshiasa et al 2009 J. Phys.: Conf. Ser. 190 012119
M Harfouche et al 2009 J. Phys.: Conf. Ser. 190 012189
J J Lawton et al 2009 J. Phys.: Condens. Matter 21 474206
G Cristoforetti et al 2009 J. Phys. D: Appl. Phys. 42 225207
Yu-xi Liu et al 2004 J. Phys. A: Math. Gen. 37 4423
P. Reig et al. 2000 ApJ 530 916
N M Atakishiyev and A U Klimyk 2002 J. Phys. A: Math. Gen. 35 5267
Fabio Costa and Federico Piazza 2009 New J. Phys. 11 113006
A. A. Mihajlov et al. 2003 ApJS 147 369
Matthew J. Payne et al. 2010 ApJ 712 L86