研究目的
Investigating the influence of B-site deficiency on the stability of electrically induced long-range ferroelectric order in Bi0.5+xNa0.5-xTi1-0.5xO3 ceramics.
研究成果
The B-site deficiency in Bi0.5Na0.5TiO3 ceramics effectively decreases the depolarization temperature and enhances the dielectric properties, indicating a promising route to tailor the stability of electrically induced long-range ferroelectric order.
研究不足
The study is limited to the specific composition range of Bi0.5+xNa0.5-xTi1-0.5xO3 ceramics and does not explore the effects of other dopants or processing conditions.
1：Experimental Design and Method Selection:
The study focuses on the influence of B-site deficiency on the ferroelectric properties of Bi
2：5+xNa5-xTi1-5xO3 ceramics. The methodology includes the preparation of ceramics with varying B-site deficiencies and characterization of their structural and electrical properties. Sample Selection and Data Sources:
High-purity Bi2O3, Na2CO3, and TiO2 were used as raw materials to prepare the ceramics.
3：List of Experimental Equipment and Materials:
X-ray diffraction (XRD; X’pert PRO MPD, Philips), scanning electron microscope (SEM; JSM-5610, JEOL), precision impedance analyzer (Agilent), ferroelectric test unit (TF-2000, aix-ACCT), and piezo-d33 meter (ZJ-3B, Institute of Acoustics CAS) were used.
4：Experimental Procedures and Operational Workflow:
The ceramics were prepared by a conventional solid-state reaction method, characterized by XRD and SEM, and their dielectric, ferroelectric, and piezoelectric properties were measured.
5：Data Analysis Methods:
The data were analyzed to understand the structural evolution and ferroelectric properties of the ceramics.
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