Zobrazeno 1 - 10
of 41
pro vyhledávání: '"N. Y. Garces"'
Autor:
Marek Skowronski, Evan R. Glaser, Hun Jae Chung, Mary Ellen Zvanut, G. Ngetich, N. Y. Garces, Alexander Y. Polyakov
Publikováno v:
Materials Science Forum. :385-388
The understanding of the structure and associated defect level of point defects in SiC is important because the material is to be used both as a semiconductor and semi-insulator. Production of the latter is achieved by compensation of unavoidable imp
Publikováno v:
Physica B: Condensed Matter. :77-80
We have recently explored the nature and stability of native defects in SI 4H-SiC after post-growth anneals between 1000 and 1800 °C from combined electron paramagnetic resonance (EPR) and low-temperature infrared photoluminescence (PL) experiments.
Publikováno v:
Journal of Electronic Materials. 36:268-271
Using electron paramagnetic resonance (EPR), we observe a defect that increases significantly with annealing temperature. This spin S = 1 defect is characterized by g x ≈ g y ≈ g z = 2.0056 and a fine structure splitting D ∼ 100 G whose princip
Autor:
W. E. Carlos, Hun Jae Chung, Marek Skowronski, Saurav Nigam, Evan R. Glaser, Sung Wook Huh, N. Y. Garces, Alexander Y. Polyakov
Publikováno v:
Materials Science Forum. :547-550
We used electron paramagnetic resonance (EPR) and deep-level transient spectroscopy (DLTS) to quantitatively compare the concentrations of the EPR signal originally known as SI-5 and the commonly observed DLTS signal at E c -0.65 eV in bulk and epita
Autor:
N. Y. Garces, Nancy C. Giles, R.C. DeMattei, S. M. Evans, Kevin T. Zawilski, Larry E. Halliburton, Robert S. Feigelson
Publikováno v:
physica status solidi (b). 243:4070-4079
Electron paramagnetic resonance (EPR) and electron-nuclear double resonance (ENDOR) have been used to characterize Mn 2+ (3d 5 ) ions in CdGeAs 2 crystals grown by the horizontal Bridgman method. These samples were p-type with room-temperature hole c
Autor:
N. Y. Garces, Nancy C. Giles, Lijun Wang, Buguo Wang, Larry E. Halliburton, Lihua Bai, Michael J. Callahan
Publikováno v:
Journal of Applied Physics. 96:7168-7172
An intense infrared absorption band has been observed in a hydrothermally grown ZnO crystal. At 12K, the band peaks near 3577.3cm−1 and has a half width of 0.40cm−1, and at 300K, the band peaks at 3547cm−1 and has a half width of 41.3cm−1. Th
Publikováno v:
Journal of Physics: Condensed Matter. 16:7095-7106
Electron paramagnetic resonance (EPR) has been used to characterize three distinct V4+ centres in undoped Czochralski-grown yttrium orthovanadate (YVO4) crystals. These EPR signals are observed at low temperatures, and their average c-axis splittings
Autor:
Peter G. Schunemann, Roger K. Route, K. T. Stevens, Larry E. Halliburton, Nancy C. Giles, N. Y. Garces, Robert S. Feigelson, Lihua Bai, Thomas M. Pollak, Scott D. Setzler
Publikováno v:
Journal of Physics: Condensed Matter. 16:2593-2607
Optical absorption, electron paramagnetic resonance (EPR) and electron-nuclear double resonance (ENDOR) have been used to characterize Ni+ ions substituting for Ag+ ions in AgGaSe2 crystals. These Ni+ ions are responsible for a strongly polarized opt
Autor:
T. A. Land, M. M. Chirila, N. Y. Garces, Larry E. Halliburton, Harry B. Radousky, Stavros G. Demos
Publikováno v:
Journal of Applied Physics. 94:6456-6462
Optical absorption and electron paramagnetic resonance (EPR) techniques have been used to characterize the production and thermal decay of point defects in undoped single crystals of KD2PO4 grown at Lawrence Livermore National Laboratory. A crystal w
Autor:
N. Y. Garces, Larry E. Halliburton, M. M. Fejer, M. M. Chirila, Dean R. Evans, Roger K. Route
Publikováno v:
Journal of Applied Physics. 94:301-306
Thermally stimulated luminescence (TSL), optical absorption, and electron paramagnetic resonance (EPR) have been used to characterize the emission of ultraviolet light from undoped LiTaO3. The crystals in this study were grown from a congruent melt a