Electrical and reliability characteristics of Mn-doped nano BaTiO3-based ceramics for ultrathin multilayer ceramic capacitor application

Abstract

Articles you may be interested inDifference between compositional and grain size effect on the dielectric nonlinearity of Mn and V-doped BaTiO3 multilayer ceramic capacitors Influence of excess Ba concentration on the dielectric nonlinearity in Mn and V-doped BaTiO3 multi layer ceramic capacitorsCorrelation between I (current)-V (voltage) characteristics and thermally stimulated depolarization current of Mndoped BaTiO3 multilayer ceramic capacitor Nano BaTiO 3 -based dielectric ceramics were prepared by chemical coating approach, which are promising for ultrathin multilayer ceramic capacitor (MLCC) applications. The doping effects of Mn element on the microstructures and dielectric properties of the ceramics were investigated. The degradation test and impedance spectroscopy were employed to study the resistance degradation and the conduction mechanism of Mn-doped nano-BaTiO 3 ceramic samples. It has been found that the reliability characteristics greatly depended on the Mn-doped content. Moreover, the BaTiO 3 ceramic with grain size in nanoscale is more sensitive to the Mn-doped content than that in sub-micron scale. The addition of 0.3 mol. % Mn is beneficial for improving the reliability of the nano BaTiO 3 -based ceramics, which is an important parameter for MLCC applications. However, further increasing the addition amount will deteriorate the performance of the ceramic samples.

Fabrication of high-performance Ba0.95Ca0.05Ti0.85Zr0.15O3 ceramics by aqueous chemical coating method

“…The excellent dielectric and electrical properties of (Ba 1À x Ca x ) (Ti 1À y Zr y )O 3 ceramics fabricated by the substitution of the divalent Ca 2 þ at A sites and the isovalent Zr 4 þ at B sites, have aroused many researchers' interests [4][5][6][7][8][9][10][11]. As well known, the properties of BaTiO 3 -based ceramics can be tailored to a large extent by different dopants [12][13][14][15][16]. According to the Electronic Industries Association (EIA) standards, the Y5V specification requires that the capacitance must be within À 82% or þ 22% of the value at 25 1C in the temperature range from À 30 1C to 85 1C [17].…”

Design of p‐type NKN‐based piezoelectric ceramics sintered in low oxygen partial pressure by defect engineering

“…In the meantime, the alkali metal can volatilize during sintering process, accompanied by the loss of their associated suboxides. The volatilization process of alkali metal can be expressed as following equations…”

Investigation of Improved Reliability in BaTiO3 -Based Ceramics via Two-Step Sintering by Impedance Spectroscopy and Schottky Barrier Model

“…The relaxation time of grain boundary is usually several orders of magnitude higher than that of bulk . As a result, the measured impedance data were fitted by the equivalent circuit with an analogous R g // C g + R gb // CPE gb circuit which represent bulk response and grain boundary response, respectively, as shown in Figure , where CPE is constant phase element. Figure (a) and (b) show the complex impedance plane plots of measured (open scatter) and fitted (solid line) data for different test temperatures of CS and TSS specimens, respectively.…”