Leakage mechanisms of self-assembled (BiFeO3) 0.5:(Sm2O3)0.5 nanocomposite films

H. Yang; H. Wang; G. F. Zou; M. Jain; N. A. Suvorova; D. M. Feldmann; P. C. Dowden; R. F. DePaula; J. L. MacManus-Driscoll; A. J. Taylor; Q. X. Jia

doi:10.1063/1.3000013

Leakage mechanisms of self-assembled (BiFeO₃) _0.5:(Sm₂O₃)_0.5 nanocomposite films

H. Yang
, H. Wang
, G. F. Zou
, M. Jain
, N. A. Suvorova
, D. M. Feldmann
, P. C. Dowden
, R. F. DePaula
, J. L. MacManus-Driscoll
, A. J. Taylor
, Q. X. Jia

Department of Materials Design and Innovation

Los Alamos National Laboratory
Texas A&M University
University of Cambridge

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

Nanocomposite (BiFeO₃)_0.5: (Sm₂O ₃)_0.5 films were deposited on (001) oriented Nb-doped SrTiO₃ substrates by pulsed laser deposition. The leakage current density versus electric field characteristics were investigated and compared with those of as-deposited and annealed pure BiFeO₃ (BFO) thin films. The dominant leakage mechanisms of nanocomposite films were space-charge-limited current and Poole-Frenkle emission for positive and negative biases, respectively. The leakage current density of nanocomposite films was reduced three orders of magnitude in comparison with the as-deposited pure BFO films. The less oxygen vacancies in the BFO phase in the nanocomposite is believed to contribute to the leakage reduction.

Original language	English
Article number	142904
Journal	Applied Physics Letters
Volume	93
Issue number	14
DOIs	https://doi.org/10.1063/1.3000013
State	Published - 2008

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title = "Leakage mechanisms of self-assembled (BiFeO3) 0.5:(Sm2O3)0.5 nanocomposite films",

abstract = "Nanocomposite (BiFeO3)0.5: (Sm2O 3)0.5 films were deposited on (001) oriented Nb-doped SrTiO3 substrates by pulsed laser deposition. The leakage current density versus electric field characteristics were investigated and compared with those of as-deposited and annealed pure BiFeO3 (BFO) thin films. The dominant leakage mechanisms of nanocomposite films were space-charge-limited current and Poole-Frenkle emission for positive and negative biases, respectively. The leakage current density of nanocomposite films was reduced three orders of magnitude in comparison with the as-deposited pure BFO films. The less oxygen vacancies in the BFO phase in the nanocomposite is believed to contribute to the leakage reduction.",

author = "H. Yang and H. Wang and Zou, \{G. F.\} and M. Jain and Suvorova, \{N. A.\} and Feldmann, \{D. M.\} and Dowden, \{P. C.\} and DePaula, \{R. F.\} and MacManus-Driscoll, \{J. L.\} and Taylor, \{A. J.\} and Jia, \{Q. X.\}",

year = "2008",

doi = "10.1063/1.3000013",

language = "English",

volume = "93",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "14",

}

TY - JOUR

T1 - Leakage mechanisms of self-assembled (BiFeO3) 0.5:(Sm2O3)0.5 nanocomposite films

AU - Yang, H.

AU - Wang, H.

AU - Zou, G. F.

AU - Jain, M.

AU - Suvorova, N. A.

AU - Feldmann, D. M.

AU - Dowden, P. C.

AU - DePaula, R. F.

AU - MacManus-Driscoll, J. L.

AU - Taylor, A. J.

AU - Jia, Q. X.

PY - 2008

Y1 - 2008

N2 - Nanocomposite (BiFeO3)0.5: (Sm2O 3)0.5 films were deposited on (001) oriented Nb-doped SrTiO3 substrates by pulsed laser deposition. The leakage current density versus electric field characteristics were investigated and compared with those of as-deposited and annealed pure BiFeO3 (BFO) thin films. The dominant leakage mechanisms of nanocomposite films were space-charge-limited current and Poole-Frenkle emission for positive and negative biases, respectively. The leakage current density of nanocomposite films was reduced three orders of magnitude in comparison with the as-deposited pure BFO films. The less oxygen vacancies in the BFO phase in the nanocomposite is believed to contribute to the leakage reduction.

AB - Nanocomposite (BiFeO3)0.5: (Sm2O 3)0.5 films were deposited on (001) oriented Nb-doped SrTiO3 substrates by pulsed laser deposition. The leakage current density versus electric field characteristics were investigated and compared with those of as-deposited and annealed pure BiFeO3 (BFO) thin films. The dominant leakage mechanisms of nanocomposite films were space-charge-limited current and Poole-Frenkle emission for positive and negative biases, respectively. The leakage current density of nanocomposite films was reduced three orders of magnitude in comparison with the as-deposited pure BFO films. The less oxygen vacancies in the BFO phase in the nanocomposite is believed to contribute to the leakage reduction.

UR - https://www.scopus.com/pages/publications/53649104523

U2 - 10.1063/1.3000013

DO - 10.1063/1.3000013

M3 - Article

AN - SCOPUS:53649104523

SN - 0003-6951

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

M1 - 142904

ER -

Leakage mechanisms of self-assembled (BiFeO₃) _0.5:(Sm₂O₃)_0.5 nanocomposite films

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