In this study, solid solutions Ba1−3xCr2xTi1−3xEr4xO3 type, with x = 0 and 0.15 (wt%) were synthesized using ball milling method and thermal treatment. Samples were ground for 6 h employing zirconia balls of three different diameter sizes (2.95, 5.05, and 6.48 mm) with acetone as a control agent. The resulting powders were sintered at 1200 °C for 6 h using a heating rate of 5 °C/min in air atmosphere. X-ray diffraction (XRD) results reveal the crystal phase predominantly ferroelectric tetragonalTetragonal BaTiO3BaTiO3. 8 mm diameter capacitors were manufactured and sintered at 1200 °C for 6 h employing heating rate of 5 °C/min in air atmosphere and later its dielectricDielectric properties were determined. The results revealed significant changes in the capacitance value of 2 and 8 kHz for the dopedDoped sample compared to undoped BaTiO3BaTiO3, demonstrating enhanced dielectricDielectric properties due to the co-dopingDoping of Er3+Er3+ and Cr3+. Additionally, structural, and morphological evolution of the sintered samples was analyzed by High resolution Scanning Electron Microscopy (HRSEM-EDS). The results obtained indicated the formation of necks between particles with tetrakaidecahedron characteristicDielectric characterization of the sintering process and homogeneous incorporation of Er3+Er3+ and Cr3+ in the crystalline structure of BaTiO3. These findings making Er3+- and Cr3+-dopedDoped BaTiO3BaTiO3 it a promising material for capacitor applications.

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Synthesis, Structural, and Dielectric Characterization of Capacitors Based on BaTiO3 Co-doped Er3+ and Cr3+

  • E. R. Ramírez-Martínez,
  • M. Pérez-Labra,
  • F. R. Barrientos-Hernández,
  • J. A. Romero-Serrano,
  • A. Hernández-Ramírez,
  • M. Reyes-Pérez,
  • M. I. Valenzuela-Carrillo,
  • I. P. Zamudio García,
  • G. Urbano-Reyes

摘要

In this study, solid solutions Ba1−3xCr2xTi1−3xEr4xO3 type, with x = 0 and 0.15 (wt%) were synthesized using ball milling method and thermal treatment. Samples were ground for 6 h employing zirconia balls of three different diameter sizes (2.95, 5.05, and 6.48 mm) with acetone as a control agent. The resulting powders were sintered at 1200 °C for 6 h using a heating rate of 5 °C/min in air atmosphere. X-ray diffraction (XRD) results reveal the crystal phase predominantly ferroelectric tetragonalTetragonal BaTiO3BaTiO3. 8 mm diameter capacitors were manufactured and sintered at 1200 °C for 6 h employing heating rate of 5 °C/min in air atmosphere and later its dielectricDielectric properties were determined. The results revealed significant changes in the capacitance value of 2 and 8 kHz for the dopedDoped sample compared to undoped BaTiO3BaTiO3, demonstrating enhanced dielectricDielectric properties due to the co-dopingDoping of Er3+Er3+ and Cr3+. Additionally, structural, and morphological evolution of the sintered samples was analyzed by High resolution Scanning Electron Microscopy (HRSEM-EDS). The results obtained indicated the formation of necks between particles with tetrakaidecahedron characteristicDielectric characterization of the sintering process and homogeneous incorporation of Er3+Er3+ and Cr3+ in the crystalline structure of BaTiO3. These findings making Er3+- and Cr3+-dopedDoped BaTiO3BaTiO3 it a promising material for capacitor applications.