Akademik Veri Yönetim Sistemi
JOURNAL OF ALLOYS AND COMPOUNDS, cilt.1045, 2025 (SCI-Expanded, Scopus)
Hexagonal and cubic boron nitride (h-BN, c-BN) materials are the most important BN polymorphs. The crystal structure of the h-BN material is similar to graphite, whereas c-BN resembles to that of diamond. In the present study, comparative characterization of both materials using luminescence techniques as well as electron magnetic resonance (EPR) technique were performed. Both BN materials showed different TL and OSL signal properties. Deconvolution was performed for a detailed analyses of complex TL and OSL curves. The number of traps and activation energies were obtained by applying Fractional Glow Technique (FGT) to the glow curves. The EPR spectra exhibited different centres for each material. Comparison of the net TL and OSL intensities of BN materials showed that the intensity of h-BN was 150 and 70 times that of the c-BN material, respectively. On the other hand, the TL intensities of h-BN and c-BN decreased by 60 % and 50 %, respectively, with increasing heating rates, which showed that both materials suffered from thermal quenching. Moreover, a correlation between the TL and OSL signals was observed for both materials. In conclusion, although the h-BN material provided better results with higher luminescence sensitivity in both TL and OSL modes, both materials can be used in radiation dosimetry measurements, taking into account their properties such as sensitivity, thermal quenching, and reproducibility. The present study stands among the rare cases where trapped charge features are different for materials with the same chemical formula but different structural properties.