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Ferroelectric properties of SrRuO3/BaTiO3/SrRuO3 ultrathin film capacitors free from passive layers

Appl. Phys. Lett. 88, 072909 (2006); doi:10.1063/1.2174100

Published 15 February 2006

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Y. S. Kim, J. Y. Jo, D. J. Kim, Y. J. Chang, J. H. Lee, and T. W. Noh
ReCOE and School of Physics, Seoul National University, Seoul 151-747, Korea

T. K. Song
Department of Ceramic Science and Engineering, Changwon National University, Changwon, Kyungnam 641-773, Korea

J.-G. Yoon
Department of Physics, University of Suwon, Suwon, Gyunggi-do 445-743, Korea

J.-S. Chung
Department of Physics, Soongsil University, Seoul 156-743, Korea

S. I. Baik and Y.-W. Kim
School of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea

C. U. Jung
Department of Physics, Hankuk University of Foreign Studies, Yongin, Gyunggi-do 449-791, Korea
Structural studies on ultrathin SrRuO3/BaTiO3/SrRuO3 capacitors, with BaTiO3 thicknesses of between 5  nm and 30  nm, show well-defined interfaces between ferroelectric BaTiO3 and electrode SrRuO3 layers. In these capacitors, we cannot observe any extrinsic electrical effects due to either the formation of an insulating interfacial passive layer or passive-layer-induced charge injection. Such high-quality interfaces result in very good fatigue endurance, even for the 5  nm thick BaTiO3 capacitor. ©2006 American Institute of Physics
History: Received 24 June 2005; accepted 27 December 2005; published 15 February 2006
Permalink: http://link.aip.org/link/?APPLAB/88/072909/1
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KEYWORDS and PACS

Keywords
PACS
  • 85.50.-n
    Dielectric, ferroelectric, and piezoelectric devices
  • 84.32.Tt
    Capacitors
  • 68.35.Ct
    Solid-solid interface structure and roughness
  • 81.70.Bt
    Mechanical testing, impact tests, static and dynamic loads
  • 81.40.Np
    Fatigue, embrittlement, fracture, and failure including corrosion fatigue and cracking
  • 62.20.Mk
    Fatigue, brittleness, fracture, and cracks
  • YEAR: 2006

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (20)
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