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A generalized charge pumping model has been developed which extends the use of charge pumping from a study of traps at the Si-SiO/sub 2/ interface to a study of traps in the oxide. The analytical model, based on tunneling theory, allows the spatial distribution of near-interface oxide traps to be determined from variable frequency charge pumping data. Profiling of near-interface oxide traps in irradiated MOSFET's as well as SONOS nonvolatile memory devices is presented.>
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Paulsen et al. (1994) studied this question.
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