Zobrazeno 1 - 10
of 184
pro vyhledávání: '"David J. H. Cockayne"'
Autor:
Shao-Ju Shih, Michael Bäurer, Luiz Fernando Zagonel, Olivier Renault, David J. H. Cockayne, Nicholas Barrett, Michael J. Hoffmann, Aude Bailly
Publikováno v:
Journal of Physics: Condensed Matter
Journal of Physics: Condensed Matter, IOP Publishing, 2009, 21, pp.314013. ⟨10.1088/0953-8984/21/31/314013⟩
Journal of Physics: Condensed Matter, 2009, 21, pp.314013. ⟨10.1088/0953-8984/21/31/314013⟩
Journal of Physics: Condensed Matter, IOP Publishing, 2009, 21, pp.314013. ⟨10.1088/0953-8984/21/31/314013⟩
Journal of Physics: Condensed Matter, 2009, 21, pp.314013. ⟨10.1088/0953-8984/21/31/314013⟩
We have used energy filtered x-ray photoelectron emission microscopy (XPEEM) and synchrotron radiation to measure the grain orientation dependence of the work function of a sintered niobium doped strontium titanate ceramic. A significant spread in wo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c13fff7da72849ca9424eb99f1205be6
The effect of heat treatment on a-Si:H films prepared by a dc magnetron glow discharge decompo-sition of silane is studied by means of electron optical techniques. Conventional transmission electron microscopy shows that crystallization takes place b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02b7ea683b958d04c36ffd92d12efd48
https://ora.ox.ac.uk/objects/uuid:58e5c5fd-ed31-4b90-b175-98b43118e2b5
https://ora.ox.ac.uk/objects/uuid:58e5c5fd-ed31-4b90-b175-98b43118e2b5
Transmission electron microscopy is used to study the morphology and the composition profile of "pure'' Ge islands grown at high temperature on Si(001) by molecular beam epitaxy. An alloying process, involving mass transport from the substrate to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3177cbb9b0d2047d74ca8ad931300138
https://doi.org/10.1103/physrevb.60.15605
https://doi.org/10.1103/physrevb.60.15605
Autor:
David J. H. Cockayne, Duc Nguyen-Manh, Christian Dwyer, Toby S. Hudson, Markus Döblinger, Graham B Winkelman, Raphaelle Satet, Michael J. Hoffmann
Used in the preparation of Si3N4 components, rare-earth elements promote the growth of needlelike grains essential to elevated toughness; evidently, La is significantly more effective than Lu. To explore this difference, we determine the three-dimens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4390a0c9e869e413c85cc6bd3116bb6
https://doi.org/10.1063/1.2009067
https://doi.org/10.1063/1.2009067
High-energy (1 MeV), ion irradiation of GeSi/Si strained layers at elevated temperatures can cause strain relaxation. This study examines the defects responsible for relaxation and for the evolution of the strain during subsequent annealing. Three di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b69b0c5ceb5cd5ec5d402f48cd0319d
https://ora.ox.ac.uk/objects/uuid:c03d8018-6f9d-404f-8a2c-e46a61e2da7b
https://ora.ox.ac.uk/objects/uuid:c03d8018-6f9d-404f-8a2c-e46a61e2da7b
Well-aligned nanoneedles are found to form in a FeGaAs (001) epitaxial thin film when irradiated with a Ga+ ion beam normal to the sample surface at an ion dose of 3× 1017 cm2 in a focused ion beam. These nanoneedles, with their axes perpendicular t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3af9863cad6c1edadceea945f80fc07
https://doi.org/10.1063/1.2182017
https://doi.org/10.1063/1.2182017
Autor:
David J. H. Cockayne, Ronald Gronsky
A study is made of the accuracy with which two-beam lattice fringe images of modulated structures can be interpreted, with particular reference to spinodally decomposed alloys. The dependence of the image upon foil thickness, lens parameters and atom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74ee384679fd19837f4841bd937b4b9c
https://doi.org/10.1080/01418618108244500
https://doi.org/10.1080/01418618108244500
Autor:
David J. H. Cockayne, Zhifeng Li, Yi Dong Chen, Chennupati Jagadish, Shu Yuan, Hark Hoe Tan, Jin Zou, Shoudong Shen, Xingquan Liu, Magnus Willander, Wei Lu, Y Fu
Single Al0.5Ga0.5As/GaAs V-groove quantum wires (QWR) modified by selective implantation and rapid thermally annealing were investigated by spatially resolved microphotoluminescence (micro-PL). The PL from the necking region was clearly observed at r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b795e6978ad64dceba4335cc6a774a0b
https://doi.org/10.1063/1.125344
https://doi.org/10.1063/1.125344
The I–V characteristics of magnetron glow discharges with a Y 1 Ba 2 Cu 3 O 7−δ superconductor cathode are studied and found to have anomalously low operating voltage, negative resistance and strong hysteresis effects. The energy dependence of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4ecb6dd44a8a50351a45e20f988c3dc
https://doi.org/10.1016/0921-4534(91)90782-t
https://doi.org/10.1016/0921-4534(91)90782-t