Papers by Author: Nikolai T. Bagraev

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Authors: W. Gehlhoff, Nikolai T. Bagraev, L.E. Klyachkin
589
Authors: Ekaterina N. Kalabukhova, Dariya Savchenko, Bela Shanina, Nikolai T. Bagraev, Leonid Klyachkin, Anna Malyarenko
Abstract: Triplet center with spin state S = 1 is detected in the EPR spectrum of the self-assembled 6H SiC nanostructure obtained by non-equilibrium boron diffusion into the n-type 6H SiC epitaxial layer (EL) under conditions of the controlled injection of the silicon vacancies at the temperature of T = 900°C. From the analysis of the angular dependences of the EPR spectrum and the numerical diagonalization of the spin Hamiltonian, the value of the zero-field splitting constant D and g-factor are found to be D = 1140•10-4см-1 and gpar = 1.9700, gper = 1.9964. Based on the hyperfine (hf) structure of the defect originating from the hf interaction with one 14N nuclei, the large value of the zero-field splitting constant D and technological conditions of the boron diffusion into the n-type 6H SiC EL, the triplet center is tentatively assigned to the defect center consisting of nitrogen atom and silicon vacancy.
389
Authors: Nikolai T. Bagraev, A.D. Bouravleuv, W. Gehlhoff, L.E. Klyachkin, A.M. Malyarenko, V.V. Romanov, S.A. Rykov
Abstract: We present ultra-shallow diffusion profiles performed by short-time diffusion of boron from the gas phase using controlled surface injection of self-interstitials and vacancies into the ntype Si(100) wafers. The diffusion profiles of this kind are found to consist of both longitudinal and lateral silicon quantum wells of the p-type that are self-assembled between the layers of microdefects, which are produced by previous oxidation. These layers appear to be passivated during short-time diffusion of boron thereby forming neutral d - barriers. The fractal type selfassembly of microdefects is found to be created by varying the thickness of the oxide overlayer, which represents the system of microcavities embedded in the quantum well plane.
1049
Authors: Nikolai T. Bagraev, L.E. Klyachkin, V.L. Sukhanov
71
Authors: Nikolai T. Bagraev, E.I. Chaikina, W. Gehlhoff, L.E. Klyachkin, I.I. Markov, A.M. Malyarenko
1607
Authors: Nikolai T. Bagraev, L.E. Klyachkin, A.M. Malyarenko, V.L. Sukhanov, N.V. Zabrodskaya
1147
Authors: Nikolai T. Bagraev, A.D. Bouravleuv, A.A. Gippius, L.E. Klyachkin, A.M. Malyarenko
679
Authors: Nikolai T. Bagraev, A.A. Gippius, L.E. Klyachkin, A.M. Malyarenko
1833
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