7 research outputs found
Oxygen Activity Dependence Of The Defect Structure Of La-doped BaTiO3
Get PDFA model for the behavior of donor doped BaTiO3 as a function of oxygen activity is proposed. Thermogravimetric measurements show good agreement with the proposed model. The results show that donor-doped BaTiO3 is stoichiometric with electronic compensation of the donor at low oxygen activity, but with increasing oxygen activity, compensation becomes ionic as excess oxygen is absorbed. The possible compensation mechanisms are discussed. © 1984 Chapman and Hall Ltd
Oxidation-reduction Behaviour Of La-doped SrTiO3
Get PDFThermogravimetric measurements as a function of oxygen activity were performed in the temperature range of 1200 to 1400° C on a series of lanthanum SrTiO3 compounds. A model which assumes the absorption of excess oxygen in the structure which compensates the donors by formation of cationic defects is postulated. Comparison of this model with the experimental results show reasonable agreement. © 1984 Chapman and Hall Ltd
Conductivity and expansion at high temperature in Sr<sub>0</sub><sub>.</sub><sub>7</sub>La<sub>0</sub><sub>.</sub><sub>3</sub>TiO<sub>3-α</sub> prepared under reducing atmosphere
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