รายละเอียดวารสารวิชาการ

  1. หน้าแรก
  2. รายชื่อนักวิจัย
  3. ผิวพรรณ ประจันทร์ศรี
  4. ข้อมูลวารสารวิชาการ
  • ผศ.ดร. ผิวพรรณ ประจันทร์ศรี
  • สาขา ฟิสิกส์
  • -
  • piewpan.p@rmutk.ac.th

ชื่องานวิจัย ( Article Name)

Modifying the Electrical Properties of Ba0.85Ca0.15Zr0.1Ti0.9O3 Ceramics by the Nanocrystals-Induced Method

บทคัดย่อ ( Abstract )

This work investigated the phase formation and electrical properties of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) prepared by the nanocrystals-induced method. We prepared the nanocrystals or seeds by the molten salt method, using CaCO3 and TiO2 oxides as starting materials. The CaTiO3 seeds showed a pure perovskite phase, and we obtained a particle size of ∼300 nm. After that, we mixed the CT seed with the starting powders of Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramic, prepared by the solid state reaction method. Results found that all ceramics showed a pure perovskite phase. The density values were in the range of 5.51 to 5.64 g/cm3, while relative density values were 96–99%. We measured the electrical properties (including dielectric, ferroelectric, and piezoelectric properties) as a function of CaTiO3 seed content. We obtained the highest dielectric constant (∼ 4239) and lowest dielectric loss (∼ 0010) measured at room temperature from a sample with x = 0.08. Moreover, the BCZT doped with CaTiO3 seed (x = 0.10) showed the highest values for the piezoelectric charge coefficient (d33 ∼ 477 pC/N), piezoelectric voltage coefficient (g33∼ 16×10−3 Vm/N), and thickness mode electromechanical coupling (kt ∼ 51.18%. Results suggested that CaTiO3-seeds enhanced the electrical properties of the BCZT ceramic using low calcination temperatures and with less dwelling time.

เอกสารวิจัย ( Paper )

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ผู้เขียน ( Authors )

  • piewpan parjansri
  • Manlika Kamnoy
  • SUKUM EITSSAYEAM
  • SUKUM EITSSAYEAM

ข้อมูลการเผยแพร่ ( Journal Infomation )