The attached files contain raw data of terahertz spintronic emitters (STE) measured with terahertz time-domain spectroscopy (THz-TDS) and vibrating sample magnetometry (VSM). The file name indicates what was measured and the individual column names in the file describe the measured quantities. STE_comparison_reflection.csv provides a comparison of the performance of the proposed spintronic emitter integrated on various substrates in a reflection configuration of THz-TDS. STE_comparison_transmission.csv compares the developed spintronic emitter with a reference sample in a transmission configuration. The data files starting with 'VSM_magnetization_' contain VSM measurements of orthogonal magnetization vectors for FeCo, TbCo2, and the proposed trilayer for both easy (EA) and hard axes (HA). The magnetic hysteresis of the spintronic emitter is shown in the files VSM_hysteresis_STE.csv, TDS_hysteresis_mx_STE.csv, and TDS_hysteresis_my_STE.csv obtained using THz-TDS and VSM measurement techniques. The file TDS_polarization_rotation.csv demonstrates magnetically controlled polarization rotation of terahertz waveforms. The last file, TDS_quartz_analysis.csv, involves an application example of using a spintronic emitter for terahertz spectroscopy in quartz analysis.