Development of Bismuth Ferrite as a Piezoelectric and Multiferroic Material by Cobalt Substitution

• Published in: Advanced materials (Weinheim) Vol. 30; no. 33; pp. e1705665 - n/a
• Main Authors: Hojo, Hajime, Oka, Kengo, Shimizu, Keisuke, Yamamoto, Hajime, Kawabe, Ryo, Azuma, Masaki
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 16.08.2018
• Subjects: Antiferromagnetism; Bismuth ferrite; Cobalt; Ferroelectric materials; Ferroelectricity; Magnetic properties; Materials substitution; Memory devices; Multiferroic materials; piezoelectric materials; Piezoelectricity; polarization rotation; Spintronics; weak ferromagnetism; piezoelectric materials; weak ferromagnetism; polarization rotation; multiferroic materials
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.201705665

Bismuth ferrite (BiFeO3) is the most widely studied multiferroic material with robust ferroelectricity and antiferromagnetic ordering at room temperature. One of the possible device applications of this material is one that utilizes the ferroelectric/piezoelectric property itself such as ferroelectric memory components, actuators, and so on. Other applications are more challenging and make full use of its multiferroic property to realize novel spintronics and magnetic memory devices, which can be addressed electrically as well as magnetically. This progress report summarizes the recent attempt to control the piezoelectric and magnetic properties of BiFeO3 by cobalt substitution. Bismuth ferrite (BiFeO3) is the most widely studied multiferroic material with robust ferroelectricity and antiferromagnetic ordering at room temperature. The recent attempts to control the piezoelectric and magnetic properties of bulk and thin films of BiFeO3 by cobalt substitution are summarized.