1：Experimental Design and Method Selection:

The experiment used a solid-state reaction method to prepare ceramic samples with varying compositions. The rationale was to investigate how the addition of BZT affects the properties of BFO-BTO ceramics, based on previous studies indicating BZT can reduce dielectric loss.

2：Sample Selection and Data Sources:

Samples were prepared with x = 0.23, 0.25, and 0.27 mol% in the formula 0.75((1-x)BFO-xBTO)-0.25BZT. Starting reagents included Bi2O3, Fe2O3, BaCO3, TiO2, and ZrO2, weighed in stoichiometric ratios.

3：23, 25, and 27 mol% in the formula 75((1-x)BFO-xBTO)-25BZT. Starting reagents included Bi2O3, Fe2O3, BaCO3, TiO2, and ZrO2, weighed in stoichiometric ratios. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Equipment included ball mill for mixing, alumina crucibles for calcination and sintering, X-ray diffractometer (XRD) for phase analysis, LCR meter (Agilent E4980a) for dielectric measurements, and Vibrating Sample Magnetometer (VSM) for magnetic measurements. Materials were the chemical reagents and poly vinyl alcohol (PVA) as a binder.

4：Experimental Procedures and Operational Workflow:

Powders were mixed by ball milling in ethanol for 12 hours, dried, calcined at 800°C (for BFO-BTO) and 1250°C (for BZT) for 5 hours, milled again for 12 hours, dried, pressed into pellets with PVA binder at 300 MPa, sintered at 1150°C for 2 hours, and then characterized using XRD, LCR meter, and VSM.

5：Data Analysis Methods:

XRD patterns were analyzed for phase identification, dielectric properties were measured at room temperature and as a function of frequency and temperature, and magnetic hysteresis loops were measured and analyzed for remanent magnetization and coercivity.