Pressure-induced disordering and anomalous lattice expansion in La2Zr2O7 pyrochlore.
Phys Rev Lett
; 105(1): 015503, 2010 Jul 02.
Article
em En
| MEDLINE
| ID: mdl-20867461
ABSTRACT
Pressure-induced cation and anion disordering in La2Zr2O7 pyrochlore is quantitatively analyzed by Rietveld refinement of in situ x-ray diffraction patterns, Raman, and infrared measurements. An anomalous lattice expansion and obvious change of the pressure dependence of the vibrational modes occur at â¼10 GPa. The pressure-induced water incorporation in the La2Zr2O7 pyrochlore structure may be related to a previously noted photoelectrochemical effect.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Estados Unidos