Autor(es)

Yakubu, S. ; Kolawole, Funsho Olaitan ; Eiras, J. A. ; Lente, M. H.

• Tipo de documento: Artigo Científico
• Fonte: PHYSICA B-CONDENSED MATTER; v. 717, p. 9-pg., 2025-11-15.

Resumo

In today's growing semiconductor and electronic economy, PMN-PT is one of the most important ferroelectric materials due to its excellent physical properties, crucial for the development of sensors, actuators, and ultrasonic transducers. One of the frontiers of property enhancement for ferroelectric materials is through rare-earth codoping. Hence, this study focuses on investigating the dielectric and ferroelectric properties of Er-Yb co-doped PMN-0.3 PT ceramic produced by the traditional sintering technique. The synthesized PMN-0.3 PT-Er-Yb powder showed a distorted perovskite structure with tetragonal symmetry. For dielectric properties, Tc of 157 degrees C and 155 degrees C was found for pure and RE co-doped compositions, with corresponding epsilon max of 15333 and 24300, respectively. For ferroelectric response, Pr of 27.06 mu C/cm2 and Ec of 3.86 kV/cm were found for the RE codoped, while the pure composition shows Pr of 14.04 mu C/cm2 and Ec of 5.44 kV/cm. These physical properties make the RE-doped PMN-PT composition a potential multifunctional material. (AU)

• Processo FAPESP: 17/13769-1 - Materiais multiferróicos e ferroelétricos para conversores de energia: síntese, propriedades, fenomenologia e aplicações
• Beneficiário: José Antonio Eiras
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 24/06119-4 - Crescimento de monocristais multiferróicos e caracterização de propriedades ópticas para aplicações em piezofotônica
• Beneficiário: Yakubu Shedrach
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto