| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Advances in Dielectric Materials and Electronic Devices
|
| Presentation Title |
Multiferroism and Magneto-electric Coupling Effect of M-type Hexaferrites |
| Author(s) |
Guolong Tan, Xue Li, HaoHao Sheng, Wei , Yao Huang |
| On-Site Speaker (Planned) |
Guolong Tan |
| Abstract Scope |
Multiferroic materials with coexistence of ferroelectricity and ferromagnetism are exceedingly rare and have great potential application in electronic devices. We report here on a new cluster of multiferroic compounds: M-type Hexaferrites, which are traditional strong magnetic materials and recently were revealed to demonstrate excellent ferroelectric behavior. The cluster family includes PbFe12O19, BaFe12O19 and SrFe12O19 as well as the substitution derivatives. The evidences for the ferroelectricity of these compounds include fully saturated polarization hysteresis (P-E) loops, two non-linear current peaks in I-V curves for switching of polarizations with external field, great abnormal change of dielectric constants at Curie temperature for ferroelectric phase transition and linear relationship between reciprocal dielectric constants with temperatures following up Curie Weiss law. The remnant polarization of these M-type Hexaferrites exceeds 100μC/cm2. These combined functional responses in M-type hexaferrites present an opportunity to create novel electric devices that actively couple the magnetic and ferroelectric orders. |