Zobrazeno 1 - 10
of 128
pro vyhledávání: '"L.G. Earwaker"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 155:308-314
A comparative study was made between a combination of α-RBS and NRA and proton backscattering (BS) for the analysis of as-prepared and metallised porous silicon samples of different thicknesses and porosities. In general, α-RBS and NRA was found to
Publikováno v:
Journal of Physics D: Applied Physics. 31:1131-1136
Accelerator-based nuclear techniques were used to study the ageing of as-prepared and aluminium-capped porous silicon samples with a porosity of 55% and with two different morphologies (microporous and mesoporous). Aluminium surface capping layers wi
Publikováno v:
Journal of Alloys and Compounds. 251:123-128
Results are reported from the analysis of a series of laser ablated YBCO thin films grown in 100 and 400 mTorr of oxygen with repetition rates between 5 and 15 Hz at a large substrate-target distance. VSM and RBS channelling results confirm the good
Publikováno v:
Scopus-Elsevier
In the context of developing laser-ablated epitaxial thin films for device applications a number of technological problems have yet to be solved including some related to the reproducibility and reliability of properties over large areas. At present
Publikováno v:
Journal of Organometallic Chemistry. 521:33-37
Cobalt has been deposited on and in porous silicon by chemical vapour infiltration and deposition using deuterated cobalt carbonyl hydride, DCo(CO) 4 . This precursor is unstable, and below about 22°C decomposes with an initial half-life of 10 min,
Publikováno v:
Journal of Physics D: Applied Physics. 29:1580-1586
Ion beam analysis data are presented on both freshly prepared and `aged' porous silicon layers of widely varying (10 - 85%) porosity. Both evaporated Al and PECVD surface capping layers are shown to suppress some of the rapid ion beam induced changes
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 113:201-204
Rhenium was deposited in porous silicon by Chemical Vapour Infiltration and Deposition (CVID) using a deuterium rhenium carbonyl DRe(CO)5 precursor. The results indicate that the precursor penetrates into the pores and reaches a saturation level very
Publikováno v:
Thin Solid Films. 276:253-256
Thin cobalt layers have been grown on and in porous silicon by chemical vapour infiltration and deposition using HCo(CO)4. The process can be controlled to give a capping layer with or without metal in the pores. Thin coats on the pore walls have bee
Publikováno v:
Environment International, Vol 21, Iss 2, Pp 151-165 (1995)
Radiocaesium has been measured, using a Ge gamma-ray spectrometer, to a depth of 1 m in the intertidal sediment at four sites along the Ribble Estuary, Lancashire, UK. Using depth profiles of 137 Cs, 134 Cs, and the 137 Cs/ 134 Cs ratio together with
Publikováno v:
Journal of Applied Physics. 76:2825-2832
The suitability of ion‐beam‐analysis techniques in quantifying the composition of mesoporous silicon nanostructures has been critically examined using films of moderate porosity (55%) prepared on n+ substrates. The effects of room‐temperature a