Positive Temperature Coefficient Resistivity (PTCR) Effect of Ba_0.8Sr_0.2TiO₃ Ceramic for Electronic Devices

Abstract:

Barium strontium titanate (BST), Ba_0.8Sr_0.2TiO₃ ceramic prepared using conventional solid-state reaction method has achieved a single phase at 1400 °C. The Ba_0.8Sr_0.2TiO₃ ceramic shows the highest dielectric constant and capacitance at 65°C about 4001 (10 Hz) and 2.92765 x10^-9 F, respectively. The conductivity of Ba_0.8Sr_0.2TiO₃ ceramic is in between the range of semi-insulator and insulator materials, and this composition also has exhibited the positive temperature coefficient resistivity (PTCR) properties jump of one order of magnitude from 2.06202 x 10⁷ Ω.cm to 3.00958 x 10^8­ Ω.cm measured at 1 kHz.

• Periodical: Advances in Science and Technology (Volume 118)
• Pages: 65-70
• DOI: https://doi.org/10.4028/p-umkbc6
• Online since: September 2022
• Authors: Nadia Nasika Nasir*, Rozana Aina Maulat Osman, Mohd Sobri Idris, Ku Noor Dhaniah Ku Muhsen, Prabakaran Poopalan, Domingo Arturo Ruiz León
• Keywords: BST, Ceramic, Dielectric, PTCR

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