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Journal of Inorganic Materials

Journal of Inorganic Materials >

2006 , Vol. 21 >Issue 3: 683 - 688

DOI: https://doi.org/10.3724/SP.J.1077.2006.00683

Research Paper

Multiple Non-linear Regression Analysis for Complex Doping of X7R MLCC Ceramics

  • ZHOU Xiao-Hua ,
  • ZHANG Shu-Ren ,
  • TANG Bin ,
  • LI Bo
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  • School of Microelectronic and Solid State Electronic, University of Electronic
    Science and Technology of China, Chengdu 610054, China

Received date: 2005-05-13

  Revised date: 2005-09-06

  Online published: 2006-05-20

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Abstract

The multiple non-linear regression analysis method was applied to build up the non-linear regression mathematical model y=b0+Σbixi+Σbiixi2+Σbiiixi3, and the complex oxides were used as effective dopants to X7R ceramic powders of multilayer ceramic capacitor (MLCC). The non-linear regression equation regarding the relationship between the dosage of different dopants and the dielectric properties was established based on the testing data. Moreover, the modification mechanism of dopants on the characteristics of the ceramics was explained in this paper. The regression equation suggests that with the increase of Nb and Ce addition to BaTiO3, the dielectric constant decreases, which is consistent with "core-shell" structure theory. According to the multiple regression equation analysis results, the dosage of different dopants was adjusted to develop the environmental friendly X7R MLCC ceramics. The main features of the BaTiO3 ceramics sintered in air atmosphere at 1140℃ are ε298K=2900±50, tgδ≤1.0%,ρ≥1011Ω·cm,Δ C/C 25℃(-55℃～+125℃)≤±15%.

Key words： X7R; MLCC; non-linear regression multi-analysis; barium titanate

Cite this article

ZHOU Xiao-Hua , ZHANG Shu-Ren , TANG Bin , LI Bo . Multiple Non-linear Regression Analysis for Complex Doping of X7R MLCC Ceramics[J]. Journal of Inorganic Materials, 2006 , 21(3) : 683 -688 . DOI: 10.3724/SP.J.1077.2006.00683

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