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
T Y Wu 2009 Smart Mater. Struct. 18 115027
C J Wilson et al 2009 Semicond. Sci. Technol. 24 115018
Yazhou Wang et al 2009 Supercond. Sci. Technol. 22 125015
J J Lawton et al 2009 J. Phys.: Condens. Matter 21 474206
M Harfouche et al 2009 J. Phys.: Conf. Ser. 190 012189
G Cristoforetti et al 2009 J. Phys. D: Appl. Phys. 42 225207
Du Yu-Lei 2009 Chinese Phys. Lett. 26 117102
T Comaschi et al 2009 J. Phys.: Conf. Ser. 190 012122
A Gaur et al 2009 J. Phys.: Conf. Ser. 190 012084