| Autor: |
Kamnoy, Manlika, Sutjarittangtham, Krit, Parjansri, Piewpan, Intatha, Uraiwan, Eitssayeam, Sukum, Raengthon, Natthaphon |
| Předmět: |
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| Zdroj: |
Ferroelectrics; Apr2017, Vol. 511 Issue 1, p94-103, 10p |
| Abstrakt: |
We studied the effects of BaTiO3(BT) seed nano-crystals on dielectric properties and phase transition behavior of Bi0.5(Na0.8K0.2)0.5TiO3(BNKT) ceramics. The BaTiO3seed nano-crystals were used as nuclei, which acted as templates for starting materials to form perovskite phase. In this study, the BT seed nano-crystals were prepared by the molten salt technique. Eutectic mixtures of NaCl-KCl (1:1 by mole) were used as the flux. Various concentrations of BT seed nano-crystals were mixed with other precursors required for formation of BNKT phase, which was prepared by the solid-state method. Addition of BT seed nano-crystals enhanced the electrical properties of ceramics. The sample with 8 mol% BT seed nano- crystals exhibited highest value of dielectric constant (ϵr) at maximum temperature of 6700. The grain size significantly decreased with increasing concentration of BT seed nano-crystals. The relaxor ferroelectric behavior was also observed with the diffuseness parameter (γ) value being close to 2. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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