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

doi:10.1063/1.3569858

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 journal › Article › peer-review

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Abstract

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 language	English
Article number	084101
Journal	Journal of Applied Physics
Volume	109
Issue number	8
DOIs	https://doi.org/10.1063/1.3569858
Publication status	Published - 15 Apr 2011
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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

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title = "Chemistry of Ruddlesden-Popper planar faults at a ferroelectric-ferromagnet perovskite interface",

abstract = "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.",

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T1 - Chemistry of Ruddlesden-Popper planar faults at a ferroelectric-ferromagnet perovskite interface

AU - Arredondo, M.

AU - Weyland, M.

AU - Hambe, M.

AU - Ramasse, Q. M.

AU - Munroe, P.

AU - Nagarajan, V.

PY - 2011/4/15

Y1 - 2011/4/15

N2 - 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.

AB - 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.

U2 - 10.1063/1.3569858

DO - 10.1063/1.3569858

M3 - Article

VL - 109

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 8

M1 - 084101

ER -

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

Abstract

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