Effects of the Lanthanum Concentration on the (Pb1-xLax)(Zr0:95Ti0:05)1-x/4O3 Antiferroelectric Ceramic System

  • Y. Méndez-González School of Physics-IMRE, University of Havana
  • Aimé Peláiz-Barranco School of Physics-IMRE, University of Havana
  • Arbelio Pentón-Madrigal School of Physics-IMRE, University of Havana
  • J.D.S. Guerra Grupo de Ferroeléctricos e Materiais Multifuncionais, Instituto de Física, Universidade Federal de Uberl ˆandia.
  • Guo Jie Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi’an Jiaotong University, Xi’an
  • Wang Xiucai Functional Materials Research Laboratory, College for Materials Science and Engineering, Tongji University
  • Tongqing Yan Functional Materials Research Laboratory, College for Materials Science and Engineering, Tongji University

Abstract

Lanthanum modified lead zirconate titanate antiferroelectric ceramics has been studied by using X-ray diffraction, dielectric analysis and ferroelectric hysteresis loops. Both antiferroelectric-orthorhombic (Pbam) and ferroelectric-rhombohedral (R3c) phases co-exist in the studied compositions. The dielectric response has revealed the presence of two peaks in a wide temperature range, which have been associated to different phase transitions. Slim-like hysteresis loops were obtained at room temperature, suggesting a higher stability of the antiferroelectric phase. The hysteresis and dielectric results show that the increase of the La3+ ions concentrations disrupts the long-range dipolar order
for the ferroelectric phase.

Hysteresis loops for PLZT 1/95/5 at several temperatures
Published
Jul 14, 2016
How to Cite
MÉNDEZ-GONZÁLEZ, Y. et al. Effects of the Lanthanum Concentration on the (Pb1-xLax)(Zr0:95Ti0:05)1-x/4O3 Antiferroelectric Ceramic System. Revista Cubana de Física, [S.l.], v. 33, n. 1, p. 12-17, july 2016. ISSN 2224-7939. Available at: <http://revistacubanadefisica.org/index.php/rcf/article/view/8>. Date accessed: 18 june 2019.
Section
Original Articles