Articles
  • Electrical properties of Dy-doped BaTiO3-based Ceramics for MLCC
  • Seung-Hwan Leea,b, Dae-Young Kima, Min-Kee Kima, Hong-Ki Kimb, Jeong Hyun Leeb, Esther Baekb and Jung-Rag Yoona,*
  • a R&D Center, Samwha Capacitor, Young-In, Korea b Dept. of Electronic Materials Engineering, Kwangwoon University, Seoul, Korea
Abstract
To understand the contribution of rare earth additive material (Dy2O3) in BaTiO3-MgO-Mn3O4-BaCO3-SiO2-xwt%Dy2O3- based (hereafter BT-based) ceramics (0.3≤ × ≤1.2) for multilayer ceramic capacitors (hereafter MLCC) prepared using BTbased powder and their properties were investigated electrical and structural properties. The BT grain size and dielectric constant of Dy-doped samples was found to increase with increasing Dy2O3 content. In particular, the 0.6 wt%Dy2O3 doped sample shows high resistance capacitance (RC) values of 2500 Ω • F, dielectric constant of 3600, dielectric loss of 1.4%, stable temperature coefficient of capacitance (TCC). These results indicate that 0.6 wt%Dy2O3 doped BT-based ceramic is a promising candidate material for superior X5R type MLCC.

Keywords: Dy2O3, BaTiO3-based,TCC, X5R type, MLCC.

This Article

  • 2015; 16(5): 495-498

    Published on Oct 31, 2015

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