High energy storage characteristics in Bi6-xLaxMgTi4O18 films
Abstract
Bi6-xLaxMgTi4O18 films were prepared by the sol-gel method combined with layer-by-layer plasma treatment. The incorporation of La3+ ions weakens intrinsic inter-domain interactions, enhances both the defect dipole moment and its activity, and concurrently refines grain size while improving grain insulation. A synergistic enhancement of polarization intensity, breakdown strength, and relaxor ferroelectric behavior enabled a high energy storage density and efficiency. The Bi4.75La1.25MgTi4O18 film achieved an energy storage density of 97.0 J/cm3 and energy storage efficiency of 87%. A synergistic strategy leveraging defect dipoles and refined grain size effectively enhances energy storage performance, providing a promising avenue for the design of high-performance dielectric capacitors.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (10)
Zhehong Tang
College of Science, Inner Mongolia University of Technology 1 , Hohhot 010051,
Ruonan Yao
Department of Chemistry University of Science and Technology Beijing Beijing 100083 China
Xiangcheng Xu
College of Science, Inner Mongolia University of Technology 1 , Hohhot 010051,
Shujun Pang
College of Science, Inner Mongolia University of Technology 1 , Hohhot 010051,
Yanchao Shi
College of Science, Inner Mongolia University of Technology 1 , Hohhot 010051,
Lei Li
Yunpeng Zhou
Fei Guo
Quanlong Liu
College of Science, Inner Mongolia University of Technology 1 , Hohhot 010051,
Jieyu Chen