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Three ceramic magnetic compositions within the CuZnTi ferrite system, having the Curie temperatures centered around 60°C, 80°C and 100°C, respectively were investigated in order to determine the time-temperature stability of their main magnetic properties. Rates of changes of 33, 66 and 100 ppm/h of the maximum slopes of permeability were found for the samples aged at 60°C, 80°C and 100°C, respectively...
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