HRTEM investigation of 90° domain configureuration and P-E hysteresis loop of epitaxial PZT multilayered thin films

Takanori Kiguchi, Naoki Wakiya, Kazuo Shinozaki, Nobuyasu Mizutani

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Multi-layered epitaxial Pb(Zrx,Ti1-x)O3 (PZT) films of x=0.2-0.5 were deposited on La0.5Sr0.5CoO3-x (LSCO)/ (001)STO and LSCO/CeO2/YSZ/(001)Si substrates with buffer layers. It was investigated how the 90° domain structure and the P-E hysteresis character depend on the difference of the thermal expansion coefficient by changing the Zr/Ti composition and the substrates, using HRTEM and XRD methods. XTEM analysis showed that usual lamella configuration of 90° domains of 8-30 nm in width penetrated the columnar grain and the PZT layer in the PZT stacked film of Zr/Ti=20/80, 30/70, 40/60. On the other hand, the close-packed 90° domains of 4-5 nm in width existed in a epitaxial columnar grain in the PZT50/50 stacked film. The P-E hysteresis loops of PZT20/80 stacked films deposited on STO and Si substrates show the remanent polarization of 2Pr=136 μC/cm2, 2Pr=80 μC/cm2, respectively. On the other hands, those of PZT50/50 stacked films deposited on STO and Si substrates show the polarization of 2Pr=125 μC/cm2, 2Pr=36 μC/cm2, respectively. Thus, the P-E hysteresis loop of PZT50/50 has remarkable difference of 2Pr between the substrates.

Original languageEnglish
Pages (from-to)243-254
Number of pages12
JournalMaterials Research Society Symposium - Proceedings
Volume748
Publication statusPublished - 2003 Jul 28
Externally publishedYes
EventFerroelectric Thin Films XI - Boston, MA, United States
Duration: 2002 Dec 22002 Dec 5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'HRTEM investigation of 90° domain configureuration and P-E hysteresis loop of epitaxial PZT multilayered thin films'. Together they form a unique fingerprint.

Cite this