Search Results - "Howson, M.A"

Giant magnetoresistance and possible miniband effects in periodic magnetic fields by Overend, N., Nogaret, A., Gallagher, B.L., Main, P.C., Wirtz, R., Newbury, R., Howson, M.A., Beaumont, S.P.

“…We have investigated the magnetoresistance (MR) of high mobility, near surface two-dimensional electron gases that are subject to a periodic magnetic field of…”
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Giant magnetoresistance and super-paramagnetism in Co/Au multilayers by Xu, J., Howson, M.A., Hickey, B.J., Greig, D., Veillet, P., Kolb, E.

“…We present results for the magnetoresistance and magnetisation of MBE grown Co/Au multilayers with very thin Co thicknesses. These multilayers exhibit…”
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Topical adrenaline in control of intraoperative bleeding in adenoidectomy: a randomised control trial by Howson, M.A., Agada, F., Sylvester, D., Coatesworth, A.

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Specific heat of a DyBa 2Cu 3O 7− y single crystal in magnetic fields up to 8 T by Garfield, N.J, Howson, M.A, Yang, G, Abell, S

“…The specific heat of a twinned DyBa 2Cu 3O 7− y (DyBCO) single crystal has been measured in magnetic fields up to 8 T near T c. The measurements were performed…”
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Superparamagnetism in melt-spun CuCo granular samples by Hickey, B.J., Howson, M.A., Musa, S.O., Tomka, G.J., Rainford, B.D., Wiser, N.

“…We have studied the magnetic properties of a melt-spun granular sample of Cu 87Co 13. The Cu matrix contains very fine particles of Co, having a bimodal…”
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Liquid phase separation in melt-spun Cu70Co30 ribbon by Song, X., Mahon, S.W., Cochrane, R.F., Hickey, B.J., Howson, M.A.

“…Due to the large heat of mixing in the Cu-Co system, liquid phase separation is inevitable in Cu70Co30 ribbons during the course of the quenching process. The…”
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Microstructural evolution and giant magnetoresistance in melt-spun Cu 70Co 30 ribbon by Song, X., Mahon, S.W., Cochrane, R.F., Howson, M.A.

“…A maximum giant magnetoresistance (GMR) value of 22% has been determined in melt-spun Cu 70Co 30 ribbon after annealing at 450°C for 1 h. Two types of Co-rich…”
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Dependence of Co particle size on the growth rate in the MBE grown Co/Au superparamagnetic multilayers by Xu, J., Howson, M.A., Kolb, E., Veillet, P., Petford-Long, A.

“…In this paper, we show that Co\Au multilayers grown by MBE exhibit superparamagnetic properties when the Co thickness is below 4 Å. By varying the growth rate…”
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Longitudinal and Hall resistance induced by large-amplitude magnetic barriers by Kubrak, V, Neumann, A.C, Gallagher, B.L, Main, P.C, Henini, M, Marrows, C.H, Howson, M.A

“…We study the longitudinal and Hall resistances of a two-dimensional electron gas subjected to a magnetic barrier generated by a ferromagnetic element on the…”
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Specific heat of a DyBa2Cu3O7−y single crystal in magnetic fields up to 8 T by Garfield, N.J, Howson, M.A, Yang, G, Abell, S

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Transport properties of a two-dimensional electron gas due to a spatially random magnetic field by Rushforth, A.W, Gallagher, B.L, Main, P.C, Neumann, A.C, Marrows, C.H, Zoller, I, Howson, M.A, Hickey, B.J, Henini, M

“…We have studied the magnetoresistance of a near-surface two-dimensional electron gas (2DEG) in the presence of a random magnetic field produced by CoPd…”
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Perpendicular resistance of Co/Cu multilayers prepared by molecular beam epitaxy by List, N.J., Pratt, W.P., Howson, M.A., Xu, J., Walker, M.J., Greig, D.

“…The magnetoresistance (MR) of layered metal systems with the current in a direction perpendicular to the plane of the layers (CPP) is studied. The technique…”
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Induced magnetoresistance in semiconductor devices due to single sub-micron magnetic barriers by Kubrak, V., Rahman, F., Overend, N., Gallagher, B.L., Main, P.C., Boeck, J.de, Behest, M., Marrows, C.H., Howson, M.A.

“…We investigate the magnetoresistance induced in a near-surface two-dimensional electron gas by the fringe field of a thin ferromagnetic line on the surface of…”
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Giant magnetoresistance and hysteretic effects in hybrid semiconductor/ferromagnet devices by Nogaret, A, Overend, N, Gallagher, B.L, Main, P.C, Henini, M, Marrows, C.H, Howson, M.A, Beaumont, S.P

“…We have investigated ballistic magnetoresistance effects in a two dimensional electron gas subjected to a periodic magnetic field that alternates in sign. The…”
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Microstructural evolution and giant magnetoresistance in melt-spun Cu70Co30 ribbon by Song, X., Mahon, S.W., Cochrane, R.F., Howson, M.A.

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Observation of giant magnetoresistances in hybrid semiconductor/ferromagnetic devices by Overend, N., Nogaret, A., Gallagher, B.L., Main, P.C., Henini, M., Wirtz, R., Newbury, R., Marrows, C.H., Howson, M.A., Beaumont, S.P.

“…We have investigated the magnetoresistance (MR) of heterostructures containing near-surface two-dimensional electron systems subject to periodic,…”
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Why is the giant magnetoresistance proportional to the magnetisation for granular CuCo? by Musa, S.O., Howson, M.A., Hickey, B.J., Wiser, N.

“…We have prepared a melt-spun granular sample of Cu 87Co 13 in which the Cu matrix contains very small particles of Co that exhibit superparamagnetism. Both the…”
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Enhanced magnetoresistance of Co/Cu(111) wedge superlattices grown by MBE by Xu, J., Hickey, B.J., Howson, M.A., Greig, D., Walker, M.J., Wiser, N.

“…We have grown epitaxial Co/Cu multilayer samples at different temperatures using MBE on sapphire (1120)0 substrates with a 30 Å layer of Nb as a buffer, and…”
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Observation of a new type of giant magnetoresistance with possible sensor applications by Overend, N, Nogaret, A, Gallagher, B.L, Main, P.C, Henini, M, Wirtz, R, Newbury, R, Marrows, C, Howson, M.A, Beaumont, S.P

“…We demonstrate the existence of a new type of giant magnetoresistance (GMR) in hybrid semiconductor/ferromagnetic devices. We observe up to a ∼1000% increase…”
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Giant magnetoresistance of dissymmetrical Co/Au multilayers by Kolb, E., Walker, M.J., Vélu, E., Howson, M.A., Veillet, P., Greig, D., Renard, J.P., Dupas, C.

“…Results are presented for the magnetoresistance (MR) of sapphire/Nb3/Cu3/Au8/(Co/Au8)n dissymmetrical multilayers built by alternating a 0.3 nm discontinuous…”
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