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Enhanced aging and thermal shock performance of Mn1.95-xCo0.21Ni0.84SrxO4 NTC ceramics
Herein, the Mn1.95-xCo0.21Ni0.84SrxO4 (MCNS) (0 ≤ x ≤ 0.15) negative temperature coefficient (NTC) materials are prepared by co-precipitation method. The replacement of Mn by Sr plays a critical role in controlling the lattice parameter, relative density, microstructure and electrical properties. The lattice parameter and relatively density increase with the increase of Sr content. Moreover, a small amount of Sr retards the grain growth and increases the bulk density. Moreover, the ρ25, B25/50,doi:10.21203/rs.3.rs-23324/v1 fatcat:gi2mstzr5rcsledrcmerd43gc4