Abstract: This work studied the impacts of non-ferroelectric inclusion on the domain structure and properties of a ferroelectric particle by simulating the domain evolution
using phase field method. It is found that the accumulation of polarization charge at the surface of inclusion may lead to local rising or descending of electric potential, which further alters the depolarization electric field, impacts the switching and nucleation of polarization near the inclusion, and finally results in more disordered domain structure. This impact is particularly significant for large inclusions and multiple inclusions. Finally, it is found that the ferroelectricity of the particle decreases significantly with respect to increasing ratio of inclusion by simulating the hysteresis loop, indicating that inclusion in ferroelectric particle
should be avoided as possible as we can in the application of microelectronics.

Key words: domain structure, ferroelectric, inclusion, particle, phase field, polarization