Elsevier

Scripta Materialia

Volume 127, 15 January 2017, Pages 29-32
Scripta Materialia

Regular Article
Ferroelectric properties of magnetoelectric CoFe2O4/Bi3.15Nd0.85Ti3O12 composite ceramics with coherent-lattice interfaces

https://doi.org/10.1016/j.scriptamat.2016.08.011Get rights and content

Abstract

The CoFe2O4(CFO)/Bi3.15Nd0.85Ti3O12(BNdT) composite ceramics with coherent-lattice interfaces were prepared to keep good ferroelectricity. The coherent-lattice interfaces exhibit (020)BNdT//(130)CFO orientation, as a result of a very small lattice mismatch. Raman spectra indicate symmetry breaking of CFO phase with the forbidden A1g mode (~ 684 cm 1) leading to new modes around 727 and 734 cm 1, suggesting that coherent interfaces have superlattice-like characteristics. The electric breakdown field increases to 400 kV/cm for the 30 mol% CFO ceramic comparing with 250 kV/cm for the pure BNdT. Partly enhanced ferroelectric polarization, as measured by hysteresis loops, is observed likely helped by this superlattice-like bonding.

References (34)

  • C.B. Long et al.

    Scr. Mater.

    (2014)
  • S.Z. Pu et al.

    Ceram. Int.

    (2015)
  • V. Moshnyaga et al.

    Nat. Mater.

    (2003)
  • M. Bibes et al.

    Nat. Mater.

    (2008)
  • J. Ma et al.

    Adv. Mater.

    (2011)
  • H. Zheng et al.

    Science

    (2004)
  • Y. Zhang et al.

    Appl. Phys. Lett.

    (2008)
  • H.S. Shulman et al.

    J. Am. Ceram. Soc.

    (1996)
  • M.K. Jeon et al.

    J. Phys. D. Appl. Phys.

    (2007)
  • Natl. Bur. Stand. (U.S.)

    Monogr.

    (1971)
  • H.J. Zhang et al.

    J. Am. Ceram. Soc.

    (2016)
  • B. Aurivillius

    Ark. Kemi

    (1949)
  • D. Fritsch et al.

    Phys. Rev. B

    (2012)
  • H. Zheng et al.

    Appl. Phys. Lett.

    (2004)
  • J. Van Den Boomgaard et al.

    J. Mater. Sci.

    (1974)
  • B.H. Toby

    J. Appl. Crystallogr.

    (2001)
  • A.C.L.A. Von Dreele

    Los Alamos National Laboratory Report LAUR

    (2004)
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