Synthesis of Sm-doped BaTiO3 ceramics and characterization of a secondary phase

• Sm2O3-doped barium titanate ceramics with a positive temperature coefficient of resistivity (PTCR) were synthesized by solid-state reaction sintering. The electrical properties are related to the dopant content. The grain size decreases with increasing dopant content. Electron diffraction analysis revealed that a secondary phase with a space group of P6(3)22 and lattice parameters a = 10.6 Angstrom and c = 20.2 Angstrom formed in the ceramics.

Nyckelord

Sm-doped BaTiO3

electric property

secondary phase

electron microscopy

barium-titanate

electron-diffraction

program system

grain-growth

eld

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