Zobrazeno 1 - 10
of 38
pro vyhledávání: '"O.M. Ndwandwe"'
Publikováno v:
Journal of Alloys and Compounds. 689:313-317
The magnetic properties of paramagnetic/weakly ferromagnetic films are strongly affected by the proximity to materials that undergo a metal to insulator phase transition. Here, we show that under the deposition conditions associated with structural c
Publikováno v:
Materials Chemistry and Physics. 183:131-135
We have investigated solid-state interfacial reactions between VO2 and the metals Co, Hf, Ni, Pd, Pt and Au to establish possible criteria for whether a metal will react with VO2 or not. Thin-film metal–VO2 couples were annealed for periods ranging
Publikováno v:
Marine Pollution Bulletin. 105:430-436
Acid Leachable Trace Metal (ALTMs) concentrations in tourist beaches of Richards Bay, Kwazulu-Natal, South Africa were assessed. 53 surface sediment samples were collected from five different beaches (Kwambonambi Long Beach; Nhlabane Beach; Five Mile
Autor:
David E. Motaung, O.M. Ndwandwe, S.S. Nkosi, Robin E. Kroon, Nompumelelo Leshabane, Ioannis Kortidis, James Tshilongo
Publikováno v:
Materials Chemistry and Physics. 242:122452
ZnO nano-rods and flower-like structures have been successfully synthesized by the hydrothermal process. These nanostructures were annealed at various temperatures (210, 310, 510, and 710 °C) both in air and vacuum (~10−4 mbar) for 1h and subseque
Publikováno v:
Journal of Alloys and Compounds. 654:344-348
Pure and Mn-doped TiO 2−x films were grown on corning glass substrates by the pulsed laser deposition (PLD) system in vacuum at two different temperatures, 350 °C and 580 °C. The films grown at 350 °C were non-crystalline while those grown at 58
Autor:
Ioannis Kortidis, S.S. Nkosi, George Kiriakidis, David E. Motaung, Peter R. Makgwane, O.M. Ndwandwe, Suprakas Sinha Ray
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry
Pure and manganese (Mn) ion-doped TiO 2 films were grown by pulsed laser deposition under vacuum at different substrate temperatures 350 and 580 °C for 50 min each. The concentration of the Mn in TiO 2 films was varied from 10 to 30%. The prepared f
Publikováno v:
Materials Chemistry and Physics. 92:487-491
Solid-state compound phase formation has been investigated between thin metal films (Cu, Ir, Mo, Pt, Re, Y, Yb, and Zr) and SiO2 substrates using Rutherford backscattering spectrometry (RBS) and X-ray diffraction (XRD) techniques. The thin-film coupl
Publikováno v:
Journal of Materials Research. 18:1900-1907
Phase formation was studied in the Fe–Ge and Cr–Ge thin-film systems by means of Rutherford backscattering spectrometry and x-ray diffraction. In the Fe–Ge system, FeGe was the first phase to form while in the Cr–Ge system, Cr11Ge8 was found
Publikováno v:
Defect and Diffusion Forum. :81-86
Autor:
Thulani Thokozani Hlatshwayo, V.M. Maphiri, O.M. Ndwandwe, Setumo Victor Motloung, B.F. Dejene, Tshwafo E. Motaung
Publikováno v:
Nanomaterials and Nanotechnology. 8:184798041880064
Mg1.5Al2O4.5: x% Eu3+ (0 ≤ x ≤ 2) nanopowders were successfully synthesized via sol–gel method. The X-ray diffraction (XRD) spectrum revealed that the Mg1.5Al2O4.5: x% Eu3+ matches the single phase of face-centred cubic MgAl2O4. The estimated a