High-pressure synthesis of Bi(MgTi)O

Yoneda, Yasuhiro   ; Nishida, Takashi*; Saito, Hiroyuki; Yoshii, Kenji  

The antiferroelectric crystal can become very useful ferroelectric by combining with other ferroelectric though is only by it a wonderful, electric characteristic. It was reported to synthesize Bi(MgTi) O by the high temperature high pressure synthesis by Khalyavin though it was one of bisumuth perovsukite, and the synthesis was difficult in the normal pressure. Bi(MgTi) O was collected in a method similar as for us and when the high temperature high pressure was synthesized, the sample that became rhombohedral structure a room temperature was able to be collected. When the P-E hysteresis loop of this sample was measured, the result of suggesting hysteresis strong dielectric feature. It was found that the rhombohedral structure is the metastable phase though it was stable phase in the high pressure.