In this paper we report a preliminary neutron diffraction investigation of the proton conducting La0.99Ca0.01NbO4 material. Measurements have been acquired from room temperature up to 750 degrees C under dry and wet atmosphere. The main result of this investigation is the observation of the existence of a broad temperature interval where the low-T monoclinic phase coexists with the high-T tetragonal phase. Even at the highest investigated temperature small fractions of the monoclinic phase have been detected under the experimental conditions employed here
Investigation of the high temperature structural behavior of La0.99Ca0.01 NbO4 proton conducting material
MALAVASI, LORENZO;
2009-01-01
Abstract
In this paper we report a preliminary neutron diffraction investigation of the proton conducting La0.99Ca0.01NbO4 material. Measurements have been acquired from room temperature up to 750 degrees C under dry and wet atmosphere. The main result of this investigation is the observation of the existence of a broad temperature interval where the low-T monoclinic phase coexists with the high-T tetragonal phase. Even at the highest investigated temperature small fractions of the monoclinic phase have been detected under the experimental conditions employed hereFile in questo prodotto:
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