Structural and piezoelectric properties of rare earth doped PbTiO3 ceramics

• Tipo: Artigo em Revista Científica Internacional
• Data: 2002

Autores

Dimitriu, E (Autor) Outra; Boerasu, I (Autor) Outra; Pereira, M (Autor) Outra; Gomes, MJM (Autor) Outra; Tanasoiu, C (Autor) Outra

Revista

Título: Ferroelectrics

Vol. 273

Páginas: 2645-2650

ISSN: 0015-0193

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 3 Citações

Outras Informações

ID Authenticus: P-000-R5A

DOI: 10.1080/00150190211778

Abstract (EN): Structural and piezoelectric properties of PbTiO3 (PT) ceramics materials doped with different rare earth elements were investigated. The basic chemical formula was Pb(0.88)Ln(0.08)Ti(0.98)Mn(0.02)O(3), where Ln stands for rare earth element (Ce, Pr, Gd, Nd). The powders were prepared by conventional ceramic method. All samples showed a tetragonal perovskite structure at room temperature. After sintering, bulk materials with high density were achieved for all compositions. Followed by XRD, the cell evolution and the structural anisotropy depend on the lanthanide ionic radius. The crystallite size was estimated from XRD measurements. Piezoelectric measurements (d(33) and k(p)) were performed using resonance - antiresonance frequencies. Ce-doped PT showed the highest d(33) coefficient (similar to39pC/N), while for the other doped materials d(33) was only of the order 30 pC/N.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6