Influence of intrinsic or extrinsic doping on lattice locations of carbon in semi-insulating GaN

2019 ◽  
Vol 12 (6) ◽  
pp. 061002 ◽  
Author(s):  
Yue Xu ◽  
Xuelin Yang ◽  
Peng Zhang ◽  
Xingzhong Cao ◽  
Yao Chen ◽  
...  
Keyword(s):  
1999 ◽  
Vol 595 ◽  
Author(s):  
W. R. Wampler ◽  
J. C. Barbour ◽  
C. H. Seager ◽  
S. M. Myers ◽  
A. F. Wright ◽  
...  

AbstractWe have used ion channeling to examine the lattice configuration of deuterium in Mg doped GaN grown by MOCVD. The deuterium is introduced by exposure to gas phase or ECR plasmas. A density functional approach including lattice relaxation, was used to calculate total energies for various locations and charge states of hydrogen in the wurtzite Mg doped GaN lattice. Results of channeling measurements are compared with channeling simulations for hydrogen at lattice locations predicted by density functional theory.


1996 ◽  
Vol 54 (12) ◽  
pp. 8769-8781 ◽  
Author(s):  
R. C. Newman ◽  
M. J. Ashwin ◽  
M. R. Fahy ◽  
L. Hart ◽  
S. N. Holmes ◽  
...  
Keyword(s):  

1994 ◽  
Vol 49 (1-2) ◽  
pp. 354-360 ◽  
Author(s):  
G. Sulzer ◽  
B. Ittermann ◽  
E. Diehl ◽  
B. Fischer ◽  
H.-P. Frank ◽  
...  

Abstract The temperature dependence of impurity induced EFG 's around implanted 12B ions in Cu was measured for two lattice locations using the β-NMR method. The induced EFG at the nearest neighbouring host atoms decreases with increasing temperature for the case of 12B stopped on interstitial sites, whereas the opposite temperature behaviour was found if 12B is situated in substi­tutional sites.


2002 ◽  
Vol 57 (6-7) ◽  
pp. 617-619 ◽  
Author(s):  
M. Mihara ◽  
K. Hashimoto ◽  
K. Arimura ◽  
S. Kudo ◽  
K. Akutsu ◽  
...  

The nuclear quadrupole interaction of the short-lived -emitter 12B implanted into CaB6 crystal has been studied by means of modified β-NMR (β-NQR) technique. The electric field gradient at the implanted 12B was found to be = q-(1.34±0.05)x1021 V/m2 at room temperature. From this result it is concluded that the 12B probe nuclei are mainly implanted in the substitutional boron site and are applicable to systematic NMR studies of ferromagnetic La doped CaB6


1993 ◽  
Vol 73 (2) ◽  
pp. 633-639 ◽  
Author(s):  
M. J. Ashwin ◽  
M. Fahy ◽  
J. J. Harris ◽  
R. C. Newman ◽  
D. A. Sansom ◽  
...  
Keyword(s):  

2010 ◽  
Vol 297-301 ◽  
pp. 502-507 ◽  
Author(s):  
Anna Bondareva ◽  
Tatiana Levchenko ◽  
Galina I. Zmievskaya

Ion irradiation of surfaces leads to blistering (vacancy-gaseous bubbles formation into crystal lattice) and/or nano-scale islands of thin cover formation. Stochastic model of first order phase transition at fluctuation stage is presented by superposition of Wiener processes of nuclei clustering and it’s Brownian motion. Solution of Ito-Stratonovich stochastic differential equations allows studying the evolution of distribution functions versus clusters sizes and relative lattice locations of nuclei.


2012 ◽  
Vol 100 (4) ◽  
pp. 042109 ◽  
Author(s):  
H. P. Gunnlaugsson ◽  
K. Johnston ◽  
T. E. Mølholt ◽  
G. Weyer ◽  
R. Mantovan ◽  
...  
Keyword(s):  

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