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- W1964682846 abstract "We have studied the dielectric permittivity in the frequency range 10−2–107 Hz of electron-beam-evaporated CoAl2O3 composite films. Films with volume fractions of cobalt in excess of 0.07 consist of small cobalt particles dispersed in a matrix of mixed cobalt aluminium oxide. The dielectric response shows relaxation peaks superimposed on an anomalous low frequency dispersion. The relaxation peaks are probably due to tunnelling of electrons on clusters consisting of metal particles and localized states dispersed in the oxide. For cobalt volume fractions between 0.15 and 0.20 the conductivity increases by eight orders of magnitude. This conductivity threshold may be related to the percolation of oxide-coated cobalt particles." @default.
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- W1964682846 date "1988-11-01" @default.
- W1964682846 modified "2023-09-26" @default.
- W1964682846 title "Dielectric relaxation in CoAl2O3 composite films" @default.
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- W1964682846 doi "https://doi.org/10.1016/0040-6090(88)90679-7" @default.
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