Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films
Citation:
Arora, S. K.; Sofin, R. G. S.; Shvets, I. V.; Kumar, R.; Khan, M. W.; Srivastava, J. P., Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films, Journal of Applied Physics, 97, 10, 2005, 10C310Download Item:
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Abstract:
Low frequency conduction noise (1/f noise) properties of epitaxial magnetite (Fe3O4) 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 Fe3O4 films.
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Science Foundation Ireland (SFI)
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http://people.tcd.ie/ivchvetsDescription:
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Author: SHVETS, IGOR; ARORA, SUNIL
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Journal of Applied Physics97
10
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Surface Physics, thin filmsLicences: