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- W2077197998 abstract "A proposta deste trabalho foi o estudo e a obtenção de uma cerâmica densa à base de SnO2 dopada com CoO, Ta2O5 e diferentes concentrações de Pr2O3. Os sistemas apresentaram elevados valores de densidade relativa, e propriedades não ôhmicas. A adição de Pr2O3 proporcionou um aumento no número de barreiras efetivas dos sistemas melhorando o valor do coeficiente de não-linearidade e aumentando o do campo de ruptura. Pelas medidas de espectroscopia de impedância, calculou-se a altura e a largura da barreira de potencial para os sistemas, mostrando que os resultados estão de acordo com a resposta em corrente contínua." @default.
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- W2077197998 date "2003-12-01" @default.
- W2077197998 modified "2023-10-03" @default.
- W2077197998 title "Efeito do Pr2O3 nas propriedades elétricas de varistores à base de SnO2" @default.
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- W2077197998 doi "https://doi.org/10.1590/s0366-69132003000400007" @default.
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