Chemistry of Ruddlesden-Popper planar faults at a ferroelectric-ferromagnet perovskite interface

M. Arredondo, M. Weyland, M. Hambe, Q. M. Ramasse, P. Munroe, V. Nagarajan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
245 Downloads (Pure)


We investigate the interfacial structure of PbZr0.20Ti0.80O3 (PZT)/La0.67Sr0.33MnO3 (LSMO)/SrTiO3 heterostructures by combining low-magnification transmission electron microscopy imaging and spectroscopy techniques with high-resolution spherical-aberration corrected scanning transmission electron microscopy imaging, geometrical phase analysis, and spectroscopy results. For certain thickness regimes, the interface between PZT and LSMO is found to have a significant density of planar defects at the interface. Both A-site cation (Pb) diffusivity and highly inhomogeneous local strains are observed at the boundaries of the defect areas. It is proposed that Pb is incorporated as PbO Ruddlesden–Popper planar fault within the LSMO. These results underline the importance of chemical fluctuations caused by long-range strain fields associated with defect cores.

Original languageEnglish
Article number084101
JournalJournal of Applied Physics
Issue number8
Publication statusPublished - 15 Apr 2011
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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