A novel low-temperature-fired multifunctional varistor-magnetic ferrite materials

Li Then Mei, Hsing-I Hsiang, Hui Wen Ye

研究成果: Paper

摘要

A novel low temperature-fired (950°C) multifunctional varistor-magnetic fenite materials can be obtained by adding V20O5 into CuCr0.2Fe1.8O4 ferrites. The relationship between the grain-boundary composition and varistor properties were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersion spectroscopy (EDS), and X-ray photoelectric spectroscopy (XPS). The addition of V2O5 can effectively reduce the sintering temperature of CuCr0.2Fe1.8O 4ferrites to temperatures of lower than 950° C. Moreover, the V5+ ions occupied the octahedral site of spinel structure and acted as donor dopant, which resulted in the semiconductive grain. The copper-rich observation at the grain boundary based on the TEM and EDS results implied that copper oxide would possibly develop at the grain boundary as the acceptor state, forming double Schottky barriers with the n-type semiconductor grains.

原文English
頁面641-649
頁數9
出版狀態Published - 2012 十二月 1
事件8th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2012 - Erfurt, Germany
持續時間: 2012 四月 162012 四月 19

Other

Other8th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2012
國家Germany
城市Erfurt
期間12-04-1612-04-19

指紋

Varistors
Ferrite
Grain boundaries
Spectroscopy
Transmission electron microscopy
Copper oxides
Ferrites
Magnetic materials
Temperature
Copper
Sintering
Doping (additives)
Ions
Semiconductor materials
X rays
Scanning electron microscopy
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

引用此文

Mei, L. T., Hsiang, H-I., & Ye, H. W. (2012). A novel low-temperature-fired multifunctional varistor-magnetic ferrite materials. 641-649. 論文發表於 8th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2012, Erfurt, Germany.
Mei, Li Then ; Hsiang, Hsing-I ; Ye, Hui Wen. / A novel low-temperature-fired multifunctional varistor-magnetic ferrite materials. 論文發表於 8th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2012, Erfurt, Germany.9 p.
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abstract = "A novel low temperature-fired (950°C) multifunctional varistor-magnetic fenite materials can be obtained by adding V20O5 into CuCr0.2Fe1.8O4 ferrites. The relationship between the grain-boundary composition and varistor properties were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersion spectroscopy (EDS), and X-ray photoelectric spectroscopy (XPS). The addition of V2O5 can effectively reduce the sintering temperature of CuCr0.2Fe1.8O 4ferrites to temperatures of lower than 950° C. Moreover, the V5+ ions occupied the octahedral site of spinel structure and acted as donor dopant, which resulted in the semiconductive grain. The copper-rich observation at the grain boundary based on the TEM and EDS results implied that copper oxide would possibly develop at the grain boundary as the acceptor state, forming double Schottky barriers with the n-type semiconductor grains.",
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Mei, LT, Hsiang, H-I & Ye, HW 2012, 'A novel low-temperature-fired multifunctional varistor-magnetic ferrite materials' 論文發表於 8th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2012, Erfurt, Germany, 12-04-16 - 12-04-19, 頁 641-649.

A novel low-temperature-fired multifunctional varistor-magnetic ferrite materials. / Mei, Li Then; Hsiang, Hsing-I; Ye, Hui Wen.

2012. 641-649 論文發表於 8th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2012, Erfurt, Germany.

研究成果: Paper

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N2 - A novel low temperature-fired (950°C) multifunctional varistor-magnetic fenite materials can be obtained by adding V20O5 into CuCr0.2Fe1.8O4 ferrites. The relationship between the grain-boundary composition and varistor properties were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersion spectroscopy (EDS), and X-ray photoelectric spectroscopy (XPS). The addition of V2O5 can effectively reduce the sintering temperature of CuCr0.2Fe1.8O 4ferrites to temperatures of lower than 950° C. Moreover, the V5+ ions occupied the octahedral site of spinel structure and acted as donor dopant, which resulted in the semiconductive grain. The copper-rich observation at the grain boundary based on the TEM and EDS results implied that copper oxide would possibly develop at the grain boundary as the acceptor state, forming double Schottky barriers with the n-type semiconductor grains.

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Mei LT, Hsiang H-I, Ye HW. A novel low-temperature-fired multifunctional varistor-magnetic ferrite materials. 2012. 論文發表於 8th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2012, Erfurt, Germany.