PbZr0.5Ti0.5O3/La0.5Sr 0.5CoO3 heterostructures prepared by chemical solution routes on silicon with no fatigue polarization

  • G. S. Wang*
  • , X. J. Meng
  • , J. L. Sun
  • , Z. Q. Lai
  • , J. Yu
  • , S. L. Guo
  • , J. G. Cheng
  • , J. Tang
  • , J. H. Chu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

PbZr0.5Ti0.5O3/La0.5Sr 0.5CoO3 (PZT/LSCO) heterostructures have been grown directly on (100)Si by chemical solution routes. Field-emission scanning electron microscopy and x-ray diffraction analysis show that PZT and LSCO thin films are polycrystalline and entirely perovskite phase. PZT thin films grown on LSCO thin films showed no preferential orientation and excellent ferroelectricity. The remnant polarization Pr is about 22.8 μC/cm2 and the coercive field Ec is about 95 kV/cm at an applied electric field of 400 kV/cm. The ferroelectric capacitor has been fabricated and showed no polarization fatigue after 3 × 109 fatigue cycles. The Pt/PZT/LSCO capacitor is suitable for nonvolatile random access memory application.

Original languageEnglish
Pages (from-to)3476-3478
Number of pages3
JournalApplied Physics Letters
Volume79
Issue number21
DOIs
StatePublished - 19 Nov 2001
Externally publishedYes

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