Model-based analysis of the ferroelectric response of multiferroic (1-x) BiFeO3-xPbTiO3 solid solution thin films around morphotropic phase boundary

被引：0
作者：
Zia, Layiq [1 ]
Jaffari, G. Hassnain [1 ]
Razia, Eesha Tur [1 ]
Ul Hassan, Qadeer [2 ]
机构：
[1] Quaid I Azam Univ, Dept Phys, Islamabad, Pakistan
[2] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
来源：
THIN SOLID FILMS | 2022年 / 741卷
关键词：
Ferroelectric; Thin films; Morphotrophic phase boundary; Chemical solution deposition; Solid solution; Ferroelectric domain; OPTICAL-PROPERTIES; BIFEO3; POLARIZATION; CRYSTAL; PHYSICS; STRESS;
D O I：
10.1016/j.tsf.2021.138995
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It is a challenging task to deposit single phase multiferroic (1-x)BiFeO3-xPbTiO3 (BF-xPT) solid solution thin films on Fluorine-doped tin oxide (FTO) coated glass substrate due to its high crystallization temperature. This study presents the preparation of BF-xPT solid solution thin films covering the morphotropic phase boundary (MPB) region. Films were prepared in ambient conditions via solution processing method on FTO coated glass substrate. Optical absorption in the visible region has been observed for intermediate compositions, promising for optoelectronic applications. The presence of multiple phases, strain, and finite-size effects results in structural complexities that have been discussed in detail. In addition to that, due to the presence of defects such as grain boundaries and porosity, considerable leakage in hysteresis loops has been observed. Linear capacitive and ferroelectric responses have also been observed, indicating that the films are composed of induced dipoles and ferroelectric domains, respectively. The origin of each mechanism has been discussed in detail. Model-based analysis was carried out to separate intrinsic ferroelectric switching by identifying MPB compositions exhibiting optimum results. Based on the intrinsic response MPB compositions are found to lie in the 0.35 < x < 0.45.
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页数：11
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