Influence of seed nano-crystals on electrical properties and phase transition behaviors of Ba<inf>0.85</inf>Sr<inf>0.15</inf>Ti<inf>0.90</inf>Zr<inf>0.10</inf>O<inf>3</inf> ceramics prepared by seed-induced method

• Main Authors: Krit Sutjarittangtham, Uraiwan Intatha, Sukum Eitssayeam
• Format: Journal
• Published: 2018
• Subjects: Agricultural and Biological Sciences
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84930643289&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/44347
• Institution: Chiang Mai University

© 2015, The Korean Institute of Metals and Materials and Springer Science+Business Media Dordrecht. This work studied the effects of seed nano-crystal on the electrical properties and the phase transition behaviors of Ba < inf > 0.85 < /inf > Sr < inf > 0.15 < /inf > Ti < inf > 0.90 < /inf > Zr < inf > 0.10 < /inf > O < inf > 3 < /inf > (BSZT) ceramics. The BSZT ceramics were prepared by the seed-induced method. The seed nano-crystal were prepared by the molten salt technique, and NaCl-KCl (1:1 by mole) eutectic mixtures were used as the flux.[1] The ceramic powders were prepared by using a conventional method which added seed nano-crystals at various ratios. Results indicated that seed nano-crystals enhanced the electrical properties of ceramics. The sample with a 20 wt. % seed nano crystals has excellent value of dielectric constant (µ < inf > r < /inf > ) of 34698 at maximum temperature. The phase transition temperature was observed at 60°C. The morphology was found that the grain size increasing significantly with an increased of seed nano crystals. The relaxor ferroelectric phase transition behavior was shown by a diffuseness parameter (³). An increase in the BSZT-seed showed a decreased in ³ value from 1.61 to 1.44. Thus the ferroelectric of the BSZT ceramics can be confirmed by hysteresis loop.