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Electron paramagnetic resonance (EPR) at 9.4 and 35 GHz were studied on two types of AlN single crystals, grown by a sublimation sandwich method. These investigations revealed the presence of… (More)
We report Raman studies of the E22 and A1(LO) symmetry phonons of bulk AlN from 13to375K. Based on observed dependences of the phonon energies and linewidths, and accounting for the… (More)
Free‐ and bound‐exciton luminescences of GaN epitaxial layers grown by a sublimation technique on 6H‐SiC substrates were investigated using time‐integrated and time‐resolved photoluminescence… (More)
The results of pulse electron paramagnetic resonance (EPR), electron nuclear double resonance (ENDOR) and optically detected magnetic resonance (ODMR) are presented to show the electron structure of… (More)
The spatial distributions of the unpaired-electron wave functions of shallow N donors in SiC crystals and of shallow P and As donors in silicon crystals were determined by studying crystals with a… (More)
Abstract Structural properties, electrical properties, deep traps spectra, optical properties of bulk 50-mm-diameter AlN crystals prepared by physical vapor transport (PVT) were studied by means of… (More)