Data for: Balancing Dielectric and Magnetic Responses in ZnFe2O4/g-C3N4 Particle–Nanosheet Composites for Microwave Absorption

This dataset contains the raw data supporting the manuscript "Balancing Dielectric and Magnetic Responses in ZnFe2O4/g-C3N4 Particle–Nanosheet Composites for Microwave Absorption", including: XRD patterns, SEM images, magnetic hysteresis loops, complex permittivity and permeability (2–18 GHz), loss tangents, normalized input impedance, attenuation constants, and thickness-dependent reflection loss data for pristine g-C3N4, pure ZnFe2O4 and the ZnFe2O4/g-C3N4 composite at 60 wt% filler loading in paraffin.