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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.122  No.1426 (June) (2014)  >  pp.464-468

Journal of the Ceramic Society of Japan
<<Previous article Vol.122  No.1426 (June) (2014)   pp.464 - 468 Next article>>

Multiferroic properties of BiFeO3–BaTiO3 based ceramics

Tomoaki FUTAKUCHI1), Tatsunori KAKUDA1), Yuichi SAKAI1)
1) Toyama Industrial Technology Center

Perovskite single-phase ceramics of Mn-doped (1 − x)BiFeO3xBaTiO3 with a wide range of composition (x = 0–1.0) were prepared using the solid-state reaction. Remanent polarization Pr, was observed for (1 − x)BiFeO3xBaTiO3 (x = 0.15–1.0) and remanent magnetization Mr, was observed for (1 − x)BiFeO3xBaTiO3 (x = 0.15–0.8). The maximum value of Pr = 39 µC/cm2 was obtained at x = 0.33 with a high Curie temperature TC, of 420°C. The maximum value of Mr = 0.18 emu/g was obtained at x = 0.33 with a high magnetic Curie temperature TCM, of 360°C. A multiferroic phase diagram is constructed from the TC and TCM observed for the samples. A multiferroic state is maintained to a high temperature up to 250°C in the wide range of x = 0.15–0.55.


Keyword:
BiFeO3–BaTiO3, Ferroelectric, Ferromagnetic, Mn doping, Phase diagram

Received: December 11, 2013
Accepted: February 21, 2014 , Published online: June 01, 2014
Copyright © 2014 The Ceramic Society of Japan

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