Interval percolation and ceramic-metal composite

Yonghong Cheng; Kai Wu; Xiaolin Chen; Yu Chen; Yongpeng Meng

doi:10.1063/1.2825281

Interval percolation and ceramic-metal composite

Yonghong Cheng
, Kai Wu
, Xiaolin Chen
, Yu Chen
, Yongpeng Meng

School of Electrical Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The mixture of the BaTi O3 ceramic powder and silver ink was baked, and the bulk property of positive temperature coefficient (PTC) of BaTi O3 was recovered in the composite. An interval percolation model was put forward to describe this composite. Monte-Carlo simulation confirmed that the bulk property can be surely recovered in a cubic network if the fraction of conductive sites is in the range of 0.101-0.311. Moreover, experimental works indicated that the percolation threshold decreased with the increase of the size of ceramic particles, and the PTC bulk property appeared more obviously at higher electrical field.

Original language	English
Article number	252903
Journal	Applied Physics Letters
Volume	91
Issue number	25
DOIs	https://doi.org/10.1063/1.2825281
State	Published - 2007

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10.1063/1.2825281

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abstract = "The mixture of the BaTi O3 ceramic powder and silver ink was baked, and the bulk property of positive temperature coefficient (PTC) of BaTi O3 was recovered in the composite. An interval percolation model was put forward to describe this composite. Monte-Carlo simulation confirmed that the bulk property can be surely recovered in a cubic network if the fraction of conductive sites is in the range of 0.101-0.311. Moreover, experimental works indicated that the percolation threshold decreased with the increase of the size of ceramic particles, and the PTC bulk property appeared more obviously at higher electrical field.",

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AU - Cheng, Yonghong

AU - Wu, Kai

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AU - Chen, Yu

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AB - The mixture of the BaTi O3 ceramic powder and silver ink was baked, and the bulk property of positive temperature coefficient (PTC) of BaTi O3 was recovered in the composite. An interval percolation model was put forward to describe this composite. Monte-Carlo simulation confirmed that the bulk property can be surely recovered in a cubic network if the fraction of conductive sites is in the range of 0.101-0.311. Moreover, experimental works indicated that the percolation threshold decreased with the increase of the size of ceramic particles, and the PTC bulk property appeared more obviously at higher electrical field.

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Interval percolation and ceramic-metal composite

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