BERKSOY-YAVUZ, Ayşe ENS Piezoaygıtlar Ltd., Turkey , BERKSOY-YAVUZ, Ayşe Gebze Yüksek Teknoloji Enstitüsü - Mühendislik Fakültesi - Malzeme Bilimi ve Mühendisliği Bölümü, Turkey , BAŞARAN, Umut Gebze Yüksek Teknoloji Enstitüsü - Mühendislik Fakültesi - Malzeme Bilimi ve Mühendisliği Bölümü, Torkey , MENŞUR ALKOY, Ebru Maltepe Üniversitesi - Mühendislik ve Doğa Bilimleri Fakültesi, Turkey , ALKOY, Sedat Gebze Yüksek Teknoloji Enstitüsü - Mühendislik Fakültesi - Malzeme Bilimi ve Mühendisliği Bölümü, Turkey , ALKOY, Sedat ENS Piezoaygıtlar Ltd., Turkey

Synthesis of Antiferroelectric NaNbO3 Crystals Obtained by Two-Stage Molten Salt and Topochemical Crystal Transformation Processes and Their Structural Characterization

27636

When (K0.5Na0.5)NbO3 (KNN) is fabricated with crystallographic texture using reactive templated grain growth (RTGG) it can achieve piezoelectric properties that are comparable to lead zirconate titanate ceramics. NaNbO3 (NN) particles are used as template particles to fabricate textured KNN ceramics. In this study, Plate-like Bi2.5Na3.5Nb5O18 (BNN) precursor particles were produced using molten salt synthesis (MSS) technique in the first stage. In the second stage, NaNbO3 (NN) particles were obtained through topochemical crystal transformation technique. BNN and NN synthesized with various salt / powder ratios at 1150°C and 975°C for 6 h, respectively. The effect of salt/powder ratio on the phase composition and microstructure of BNN and NN crystals were investigated.

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NaNbO3 Particles , Topochemical Crystal Transformation

Afyon Kocatepe University Journal Of Science an‎d Engineering

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