Piezo- and pyroelectric hysteresis in thin unipolar PZT films

resumo

Piezo- and pyroelectric hysteresis loops have been studied in unipolar lead zirconate titanate (PZT) films grown on silicon substrates. The PZT film compositions corresponded to the region of a morphotropic phase boundary. It is established that the degree of unipolarity (spontaneous polarization) in such films can reach a level that is close to the magnitude of residual polarization. Cyclic poling of samples in a strong electric field leads to a sharp drop of the residual polarization, which is related to the pinning of domain walls and the action of external tensile mechanical stresses on the film.

palavras-chave

EXCESS LEAD-OXIDE; DETECTOR ARRAYS

categoria

Physics

autores

Kiselev, DA; Kholkin, AL; Bogomolov, AA; Sergeeva, ON; Kaptelov, EY; Pronin, IP

nossos autores

agradecimentos

This study was supported by the Ministry of Education and Science of the Russian Federation (project no. RNP 2.1.1.3674), FANI (project no. 02.513.11.3332), and the Portugal Foundation for Support of Science and Technology (grant no. SFRH/BD/22391/2005).

Partilhe este projeto

Publicações similares

Usamos cookies para atividades de marketing e para lhe oferecer uma melhor experiência de navegação. Ao clicar em “Aceitar Cookies” você concorda com nossa política de cookies. Leia sobre como usamos cookies clicando em "Política de Privacidade e Cookies".