TY - GEN
T1 - Novel electro-strain-effect in La-doped Pb(Zr,Ti)O3 relaxor ferroelectrics
AU - Zhang, L. X.
AU - Ren, X.
AU - Wang, Y.
AU - Ke, X. Q.
AU - Ding, X. D.
AU - Sun, J.
PY - 2009
Y1 - 2009
N2 - Lanthanum doped lead zirconate titanate [(Pb, La)(Zr, Ti)O3] transparent ceramics show relaxor behavior when the content of Lanthanum is 4-14% and molar ratio of Zr/Ti is 65/35. They were known as important electro-optical materials, but few researches had been focused on their electromechanical behavior. In the present work, we report a large recoverable electro-strain of about 0.2% at 1.0 kV/mm in (Pb, La) (Zr, Ti)O3 8/65/35 ceramics. This electro-strain effect is stable over a wide temperature range around its glass transition temperature Tf. In-situ Raman study reveals that the significant strain effect is due to an electric-field-induced reversible transition from a relaxor state to a normal ferroelectric state. A phenomenological explanation based on a revised Laudau theory is given for the origin of the recovery of the initial relaxor state. Such an electro-strain mechanism, being similar to that of the recently-discovered novel superelasticity effect in strain glass system, may provide a novel and general way to achieve ultrahigh electromechanical coupling in relaxor ferroelectrics.
AB - Lanthanum doped lead zirconate titanate [(Pb, La)(Zr, Ti)O3] transparent ceramics show relaxor behavior when the content of Lanthanum is 4-14% and molar ratio of Zr/Ti is 65/35. They were known as important electro-optical materials, but few researches had been focused on their electromechanical behavior. In the present work, we report a large recoverable electro-strain of about 0.2% at 1.0 kV/mm in (Pb, La) (Zr, Ti)O3 8/65/35 ceramics. This electro-strain effect is stable over a wide temperature range around its glass transition temperature Tf. In-situ Raman study reveals that the significant strain effect is due to an electric-field-induced reversible transition from a relaxor state to a normal ferroelectric state. A phenomenological explanation based on a revised Laudau theory is given for the origin of the recovery of the initial relaxor state. Such an electro-strain mechanism, being similar to that of the recently-discovered novel superelasticity effect in strain glass system, may provide a novel and general way to achieve ultrahigh electromechanical coupling in relaxor ferroelectrics.
UR - https://www.scopus.com/pages/publications/74349129228
U2 - 10.1109/ISAF.2009.5307586
DO - 10.1109/ISAF.2009.5307586
M3 - 会议稿件
AN - SCOPUS:74349129228
SN - 9781424449699
T3 - IEEE International Symposium on Applications of Ferroelectrics
BT - 2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009
T2 - 2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009
Y2 - 23 August 2009 through 27 August 2009
ER -