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Effect of MnCO_3 Doping on Tunable and Dielectric Properties of BSTO/MgO Composites Ferroelectric Ceramic

Ying Hao Xie

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Abstract

Based on w(MgO)=60% magnesia mixed with BSTO,the influence of MnCO3 dopant on the dielectric properties of BSTO /MgO was investigated.Results show that average grain size of BSTO is decrease with an increase of MnCO3 doping content.At the microwave frequence,proper content of MnCO3 could reduce the loss tangents of BSTO/MgO compound and increase the tunability.When the content of MnCO3 is 0.5mol %,the dielectric constant of the composites is equal to 94,and the loss is 2.91×10-3(4.191GHz),the tunability reaches 7.4 %(2kV/mm).

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What this paper is about

Based on w(MgO)=60% magnesia mixed with BSTO,the influence of MnCO3 dopant on the dielectric properties of BSTO /MgO was investigated.Results show that average grain size of BSTO is decrease with an increase of MnCO3 doping content.At the microwave frequence,proper content of MnCO3 could reduce the loss tangents of BSTO/MgO compound and increase the tunability.When the content of MnCO3 is 0.5mol %,the dielectric constant of the composites is equal to 94,and the loss is 2.91×10-3(4.191GHz),the tunability reaches 7.4 %(2kV/mm).

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Available abstract

Based on w(MgO)=60% magnesia mixed with BSTO,the influence of MnCO3 dopant on the dielectric properties of BSTO /MgO was investigated.Results show that average grain size of BSTO is decrease with an increase of MnCO3 doping content.At the microwave frequence,proper content of MnCO3 could reduce the loss tangents of BSTO/MgO compound and increase the tunability.When the content of MnCO3 is 0.5mol %,the dielectric constant of the composites is equal to 94,and the loss is 2.91×10-3(4.191GHz),the tunability reaches 7.4 %(2kV/mm).

Key concepts: Materials science, Dielectric, Composite material, Dopant, Ceramic, Doping, Ferroelectricity, Dielectric loss

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Effect of MnCO_3 Doping on Tunable and Dielectric Properties of BSTO/MgO Composites Ferroelectric Ceramic — Research Paper | ScholarLens