Development of Low Firing NPO Based on (Ca,Sr)(Ti,Zr)O₃for Co-Firing Cu Electrode

Simultaneous achievement of high dielectric constant and low temperature dependence of capacitance in (111)-oriented BaTiO3-Bi(Mg0.5Ti0.5)O3-BiFeO3 solid solution thin films

“…In contrast, ε r for the rhombohedral phase increases monotonically with increasing temperature up to 250 • C, and increasingly high tan δ values are recorded at higher temperatures. These results indicate that pseudocubic (0.90-x)BaTiO 3 …”

“…20 Ba(OCOCH 3 ) 2 , Ti(O-n-C 4 H 9 ) 4 , Bi(O-t-C 5 H 11 ) 3 , Mg(OC 2 H 5 ) 2 , and Fe(C 5 H 7 O 2 ) were used as starting materials for the Ba, Ti, Bi, Mg, and Fe sources, respectively. These materials were dissolved in a 2-methoxyethanol solvent with acetyl acetone to prepare precursor solutions with chemical compositions of (0.90-x)BaTiO 3 -0.10Bi(Mg 0.5 Ti 0.5 )O 3 -xBiFeO 3 . These solutions, with concentrations of 0.10 mol/dm 3 , were spin-coated on substrates at a rotation rate of 3000 rpm for 50 s, followed by a drying process at 150 • C for 1 min and a pyrolysis process at 400 • C for 1 min using a hot plate.…”

“…3 thin films exhibit a high ε r (>500) and low |TCC 00 o C | of 100 ppm/K at 100 kHz that would be suitable for high-temperature capacitor applications.…”

“…The temperature dependence of the capacitance of (111) c -oriented (0.90-x)BaTiO 3 -0.10Bi(Mg 0.5 Ti 0.5 )O 3 -xBiFeO 3 solid solution films is investigated. These films are prepared on (111) c SrRuO 3 /(111)Pt/TiO 2 /SiO 2 /(100)Si substrates by the chemical solution deposition technique.…”