Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films

S. K. Arora; R. G.S. Sofin; I. V. Shvets; Ravi Kumar; M. Wasi Khan; J. P. Srivastava

doi:10.1063/1.1854439

Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films

S. K. Arora^*, R. G.S. Sofin, I. V. Shvets, Ravi Kumar, M. Wasi Khan, J. P. Srivastava

^*Corresponding author for this work

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

13 Citations (Scopus)

Abstract

Low frequency conduction noise (1f noise) properties of epitaxial magnetite (Fe3 O4) thin films having a varying density of antiphase boundaries (APBs) were investigated as a function of temperature and frequency. Temperature dependence of noise exhibits a similar behavior to that of resistivity for all the films. The magnitude of normalized noise (Sv V2) decreases with the increasing film thickness, which correlates well with the density of APBs. The quantitative feature of noise, i.e., Hooge parameter has a strong thickness dependence at low temperatures which implies that the APBs play an important role in determining the transport mechanism in epitaxial Fe3 O4 films.

Original language	English
Article number	10C310
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1854439
Publication status	Published - May 15 2005
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films",

abstract = "Low frequency conduction noise (1f noise) properties of epitaxial magnetite (Fe3 O4) thin films having a varying density of antiphase boundaries (APBs) were investigated as a function of temperature and frequency. Temperature dependence of noise exhibits a similar behavior to that of resistivity for all the films. The magnitude of normalized noise (Sv V2) decreases with the increasing film thickness, which correlates well with the density of APBs. The quantitative feature of noise, i.e., Hooge parameter has a strong thickness dependence at low temperatures which implies that the APBs play an important role in determining the transport mechanism in epitaxial Fe3 O4 films.",

author = "Arora, {S. K.} and Sofin, {R. G.S.} and Shvets, {I. V.} and Ravi Kumar and Khan, {M. Wasi} and Srivastava, {J. P.}",

note = "Funding Information: The financial support from Science Foundation Ireland (SFI) is gratefully acknowledged (Project No. 00/PI.1/C042). One of the authors R.K. is grateful to the Department of Science and Technology, India, for the financial support to carry out the research (Project No. SP/S2/M-07/98). ",

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doi = "10.1063/1.1854439",

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T1 - Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films

AU - Arora, S. K.

AU - Sofin, R. G.S.

AU - Shvets, I. V.

AU - Kumar, Ravi

AU - Khan, M. Wasi

AU - Srivastava, J. P.

N1 - Funding Information: The financial support from Science Foundation Ireland (SFI) is gratefully acknowledged (Project No. 00/PI.1/C042). One of the authors R.K. is grateful to the Department of Science and Technology, India, for the financial support to carry out the research (Project No. SP/S2/M-07/98).

PY - 2005/5/15

Y1 - 2005/5/15

N2 - Low frequency conduction noise (1f noise) properties of epitaxial magnetite (Fe3 O4) thin films having a varying density of antiphase boundaries (APBs) were investigated as a function of temperature and frequency. Temperature dependence of noise exhibits a similar behavior to that of resistivity for all the films. The magnitude of normalized noise (Sv V2) decreases with the increasing film thickness, which correlates well with the density of APBs. The quantitative feature of noise, i.e., Hooge parameter has a strong thickness dependence at low temperatures which implies that the APBs play an important role in determining the transport mechanism in epitaxial Fe3 O4 films.

AB - Low frequency conduction noise (1f noise) properties of epitaxial magnetite (Fe3 O4) thin films having a varying density of antiphase boundaries (APBs) were investigated as a function of temperature and frequency. Temperature dependence of noise exhibits a similar behavior to that of resistivity for all the films. The magnitude of normalized noise (Sv V2) decreases with the increasing film thickness, which correlates well with the density of APBs. The quantitative feature of noise, i.e., Hooge parameter has a strong thickness dependence at low temperatures which implies that the APBs play an important role in determining the transport mechanism in epitaxial Fe3 O4 films.

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Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films

Abstract

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