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Browsing Physics & Energy by Author "SFI"

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Browsing Physics & Energy by Author "SFI"

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  • Barrett, Christopher A.; Singh, Ajay; Murphy, Joseph A.; O'Sullivan, Catriona; Buckley, D.N.; Ryan, Kevin M. (American Chemical Society, 2011)
    Colloidal carbon spheres were synthesized by the carbonization of squalane, a nonvolatile hydrocarbon solvent, in supercritical carbon dioxide. Precise pressure modulation of the fluid medium led to size controlled growth ...
  • Rhen, Fernando M.F.; Roy, Saibal (American Institute of Physics, 2008)
    The magnetic properties of electrodeposited CoNiFe films with thicknesses varying from 0.20 to 10 µm were studied. The films show a single face-centered-cubic CoNiFe phase with grain sizes ranging from 23 to 29 nm. The ...
  • McSweeney, W; Lotty, O; Mogili, Naga Vishnu V; Glynn, C; Geaney, H; Tanner, D.A; Holmes, J.D; O'Dwyer, C (American Institute of Physics, 2013)
    By using Si(100) with different dopant type (n(++)-type (As) or p-type (B)), we show how metal-assisted chemically etched (MACE) nanowires (NWs) can form with rough outer surfaces around a solid NW core for p-type NWs, and ...
  • Rhen, Fernando M.F.; Roy, Saibal (IEEE Computer Society, 2008)
    We have studied the influence of P and of plating current density on static/dynamic magnetic and electrical properties of CoNiFe high moment alloy. We found that morphology, electrical and magnetic properties of films with ...
  • Rhen, Fernando M.F.; Coey, John Michael David (Elsevier B.V., 2009)
    We report the preparation, characterization of structure and magnetic properties of electrodeposited L1 0 FePt films with high coercivity. Equiatomic as-deposited films are nanocrystalline, soft and magnetically isotropic. ...
  • Rhen, Fernando M.F.; Coey, John Michael David (Elsevier, 2008)
    We report the preparation, characterization of structure and magnetic properties of electrodeposited L1 0 FePt films with high coercivity. Equiatomic as-deposited films are nanocrystalline, soft and magnetically isotropic. ...
  • Cespedes, Oscar; Luu, A.; Rhen, Fernando M.F.; Coey, John Michael David (IEEE Computer Society, 2008)
    A method is described for the fabrication of magnetic force microscopy tips via localized electrodeposition and focused ion beam milling departing from commercial tapping mode tips. Very high aspect ratios and interacting ...
  • Duffy, Meave; Collins, Christina; Rhen, Fernando M.F.; McCloskey, P.; Roy, Saibal (IEEE Computer Society, 2008)
    High current inductor applications operating in the MHz range are generally limited to Voltage Regulator Modules (VRM’s) and Point of Load (POL) power supplies, where the issue of fast transient response demands reduced ...
  • Rhen, Fernando M.F.; Fernandez, Damaris; Hinds, Gareth; Coey, John Michael David (The Electrochemical Society, 2006)
    The influence of an external magnetic field on the rest potential ΔE0 of ferromagnetic and nonferromagnetic electrodes is studied. The shift E0 is measured as a function of magnetic field magnitude and direction, pH, ...
  • Hinds, Gareth; Rhen, Fernando M.F.; Coey, John Michael David (IEEE Computer Society, 2002)
    The application of a magnetic field unexpectedly alters the rest potential of ferromagnetic electrodes in paramagnetic solutions of their salts. Anodic shifts of up to 60 mV in a field of 1 tesla were observed for 1M iron ...
  • Razee, Kafil M; Rhen, Fernando M.F.; Roy, Saibal (American Institute of Physics, 2009)
    We have investigated the magnetic properties of electroplated nickel nanowires with very distinct nanostructures, which are obtained by simply changing the plating temperature of the electrolyte. Low temperature (40°C) ...
  • O'Reilly, Cora; Sanvito, Stefano; Rhen, Fernando M.F.; Stamenov, Plamen; Coey, John Michael David (American Institute of Physics, 2006)
    The magnetization of nickel foils electrodeposited under different conditions was not usually found to differ significantly from that of the bulk (55.4 Am2 kg−1). However, some galvanostatically deposited films from a ...
  • Hudson, Sarah; Tanner, D.A; Redington, W; Magner, Edmond; Hodnett, Benjamin K; Nakahara, S (Royal Society of Chemistry, 2006)
    TEM analysis of mesoporous materials is generally undertaken to give qualitative results. Accurate quantitative analysis is demonstrated in this study. A systematic image analysis of a powder form of a hexagonal mesoporous ...
  • Rhen, Fernando M.F.; Backen, E.; Coey, John Michael David (American Institute of Physics, 2005)
    Thick films of nearly equiatomic Co–Pt produced by electrodeposition into nanoporous membranes exhibit an isotropic magnetic phase with square hysteresis loops (Mr/Ms=0.95) and coercivity of up to 1.3 T. The initial ...

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