Results 1 to 10 of about 1,320,249 (296)
Vacancy Defects in Bulk and Quasi-Bulk GaN Crystals [PDF]
Crystals, 2022 In-grown vacancy defects in bulk and quasi-bulk GaN crystals have been extensively studied with positron annihilation spectroscopy. High concentrations of Ga-vacancy-related defects are found irrespective of the growth method used in crystals with a high
Filip Tuomisto
doaj +4 more sources
Holographic dictionary and defects in the bulk
EPJ Web of Conferences, 2016 We study the holographic dual of the AdS3 spacetime with a conical defect. We calculate the boundary two-point correlator using the holographic Gubser-Klebanov-Polyakov/Witten dictionary for a scalar field in the bulk.
Khramtsov Mikhail
doaj +2 more sources
Topological Defects and Bulk Melting of Hexagonal Ice [PDF]
Journal of Physical Chemistry B, 2005 We use classical molecular dynamics combined with the recently developed metadynamics method [A. Laio and M. Parrinello, Procs. Natl. Acad. Sci. USA 99, 20 (2002)] to study the process of bulk melting in hexagonal ice. Our simulations show that bulk melting is mediated by the formation of topological defects which preserve the coordination of the ...
Parrinello Michele +2 more
exaly +5 more sources
Applied Mechanics, 2023 The fatigue strength of cast steel components is severely affected by manufacturing process-based bulk and surface imperfections. As these defect structures possess an arbitrary spatial shape, the utilization of local assessment methods is encouraged to ...
Michael Horvath +2 more
doaj +1 more source
The fractal dimension behaviour of the domain patterns in ferrite-garnet films
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023 In this work, using a set of experimental techniques and specialized software, we studied bismuth-containing ferrite garnet films of various thicknesses and with different stoichiometric compositions grown on gadolinium gallium garnet substrates.
A.D. Zigert +4 more
doaj +1 more source
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021 In this work, using a set of experimental techniques and specialized software, magnetic bismuth-containing ferrite-garnet films grown on gadolinium-gallium garnet substrates are investigated.
A.D. Zigert +2 more
doaj +1 more source
Defect formation with bulk fields [PDF]
Physical Review D, 2006 It has recently been realized that brane-antibrane annihilation (a possible explanation for ending inflation) may result in defect formation, due to the dynamics of the tachyon field. Studies of this possibility have generally ignored the interaction of the brane fields with fields in the bulk; recently it has been argued [1] that interactions with ...
Moore, Guy D., Stoica, Horace
openaire +2 more sources
INFLUENCE OF DEFECTS ON MAGNETIC CHARACTERISTICS OF FERRITE-GARNET FILMS
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2020 This paper presents a study of the effect of volumetric (bulk) defects associated with the local mechanical damage and thermal laser action on the domain structure and magnetic characteristics of epitaxial bismuth-containing garnet-ferrite Bi:FG ...
A.I. Ivanova +5 more
doaj +1 more source
Results in Optics, 2023 Two-terminal (2-T) and four-terminal (4-T) tandem solar cells with wide bandgap perovskite (MAPbI3) as the top sub-cell and low bandgap copper indium diselenide (CuInSe2, CIS) as the bottom sub-cell have potential to outperform the single-junction power ...
Ajeet Kumar Singh +4 more
doaj +1 more source
Vacancy defect distributions in bulk ZnO crystals [PDF]
SPIE Proceedings, 2007 We have used positron annihilation spectroscopy to study vacancy defects in ZnO single crystals grown by various methods from both commercial and academic sources. The combination of positron lifetime and Doppler broadening techniques with theoretical calculations provides the means to deduce both the identities and the concentrations of the ...
Tuomisto, Filip, Look, David C.
openaire +3 more sources