About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Advances in Dielectric Materials and Electronic Devices
|
Presentation Title |
Unique [Ga, Ta]:BaTiO3 Relaxor Based On Nanoscale Dipole Engineering |
Author(s) |
Kaijie Ning, Holly Shulman, Walter A Schulze, Steven C Tidrow |
On-Site Speaker (Planned) |
Kaijie Ning |
Abstract Scope |
Nanoscale dipole engineering may be a useful tool for the development of new ferroelectric relaxors for next-generation electronic devices. In this work, the unique properties of nanoscale dipolar-pair substituted [Ga, Ta]: BaTiO3 ceramics are studied based on electric, dielectric, optical and microstructural characterizations. The dielectric evolution from ferroelectric behavior to diffuse behavior to relaxor behavior occurs as dipole concentration increases. The dielectric diffuseness of dipole-pair substituted [Ga, Ta]: BaTiO3 is comparable with the typical relaxor class PMN-PT but with reduced frequency dependence. Meanwhile, the [Ga, Ta] concentration is at a low level of < 5 at%, different from the classic MPN-PT which has a large dipole concentration of around 50 at%. The new simple material model (NSMM) is applied to fundamentally understand this unique dielectric behavior of the [Ga, Ta]: BaTiO3 relaxor. |