Incorporation of lanthanide ions in lead titanate - Archive ouverte HAL
Article Dans Une Revue Journal of Materials Science Année : 2012

Incorporation of lanthanide ions in lead titanate

Résumé

Lanthanide ion doping of lead titanate was investigated using structural and differential scanning calorimetry measurements. Dense ceramics samples were prepared with starting compositions, Pb1−3x/2Ln x TiO3, assuming A-site substitution of Ln = La, Nd, Sm, Eu, Gd and Dy, at 2 and 8 at.%. Doping with La3+ reduced the tetragonality and cell volume. A systematic recovery in these values was observed for the smaller Ln3+ ions, suggesting the onset of partial substitution of the Ln ions at the B-site. The ferroelectric–paraelectric transition temperatures also recovered, consistent with an increased probability of B-site occupation with decreasing ion size. Evidence for site occupancy obtained from the presence cation vacancies is also discussed.

Dates et versions

hal-04702417 , version 1 (19-09-2024)

Identifiants

Citer

A. Peláiz-Barranco, Y. Méndez-González, D. Arnold, Pierre Saint-Grégoire, D. Keeble. Incorporation of lanthanide ions in lead titanate. Journal of Materials Science, 2012, 47 (2), pp.1094-1099. ⟨10.1007/s10853-011-5900-2⟩. ⟨hal-04702417⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

More