1：Experimental Design and Method Selection:

The study involved preparing apatite powders by high-energy ball milling and then transforming them into dense cylinders (fibres) using the laser floating zone (LFZ) technique. The effect of LFZ processing conditions on the structural and electrical properties of the fibres was assessed.

2：Sample Selection and Data Sources:

Raw materials included Ca(OH)2 and CaHPO4, processed into HA powder by ball milling. The powder was then formed into cylindrical rods for LFZ processing.

3：List of Experimental Equipment and Materials:

Equipment used included a Fritsch Pulverisette 6 planetary mill system, a CO2 Spectron SLC laser for LFZ, Rigaku D/Max-B diffractometer for XRD, Horiba Jobin Yvon HR 800 UV for Raman spectroscopy, VEGA3 TESCAN SEM for morphology observation, and Agilent 4292A Precision Impedance Analyser for electrical measurements.

4：Experimental Procedures and Operational Workflow:

The process involved milling raw materials, forming cylindrical rods, LFZ processing at various pulling rates, and characterizing the resulting fibres using XRD, Raman spectroscopy, SEM, and electrical measurements.

5：Data Analysis Methods:

Data analysis included crystallite size calculation using Scherrer's equation, phase identification via XRD, vibrational mode analysis via Raman spectroscopy, and dielectric property measurement.