0-3 type magnetoelectric 0.94Na0.5Bi0.5TiO3-0.06BaTiO3:CoFe2O4 composite ceramics with a deferred thermal depolarization. Issue 4 (April 2018)

• Record Type: Journal Article
• Authors: Deng, Anmeng; Luo, Laihui; Li, Weiping; Wang, Feifei; Wang, Yaojin
• Is Part Of: Journal of the European Ceramic Society. Volume 38:Issue 4(2018)
• Page Start: 1407
• Page End: 1415
• Publication Date: 2018-04
• Subjects: Ferroelectric -- Composite -- Magnetoelectric -- Depolarization temperature; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2017.11.004
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Developing Na0.5 Bi0.5 TiO3 -based magnetoelectric (ME) coupling composites with higher depolarization temperature is highly valuable for the environment-friendly smart electronic devices. We have developed a new kind of 0-3 type 0.94Na0.5 Bi0.5 TiO3 -0.06BaTiO3 : x CoFe2 O4 (NBTBT: x CFO, x = 0, 0.1, 0.2, 0.3) composite ceramics with a deferred depolarization temperature, together with an additional strong ME coupling of 9.2 mV/cm·Oe for the NBTBT:0.2CFO. The basic structure, ferroelectric/ferromagnetic properties, and the depolarization temperature of the NBTBT: x CFO composite ceramics were investigated. It was found that an enhancement of depolarization temperature (>25 °C) was obtained in these 0-3 type composites relative to the pure NBTBT ones (115 °C vs 90 °C). The mechanism of the enhanced depolarization temperature of the composites is discussed. The present results demonstrate that NBTBT: x CFO composites have great potential for ME devices.