Ba0.8Sr0.2TiO3 films crystallized on glass and platinized substrates by laser-assisted annealing at room temperature

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Silva, JPB (Autor) Outra; Khodorov, A (Autor) Outra; Almeida, A (Autor) Outra; Agostinho Moreira, JA (Autor) FCUP; Pereira, M (Autor) Outra; Gomes, MJM (Autor) Outra

Revista

Título: Applied Physics A: Materials Science and Processing

Vol. 116

Páginas: 1271-1280

ISSN: 0947-8396

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 3 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

Outras Informações

ID Authenticus: P-009-SCC

DOI: 10.1007/s00339-013-8218-x

Abstract (EN): In this work, Ba0.8Sr0.2TiO3 (BST) films were grown by pulse laser ablation on bare glass and platinized substrates. The crystalline phase was obtained with the help of laser-assisted annealing (LAA) at room temperature, in air environment. By adjusting LAA conditions, like frequency of the laser and number of shots, we were able to grow crack-free BST thin films with pure perovskite phase on bare glass and platinized substrates. The crystalline layer was found to be the same irrespective of the substrate used, c. a. 250 nm thick. The electric characteristics of the amorphous and LAA crystalline BST films deposited on platinized substrate were further studied and analyzed. While in amorphous films it was found that the oxygen defects are responsible for conduction, in LAA films the amorphous/crystalline interface layer plays an important role in current leakage.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10