Roger Ward: Publications

Magnetic structure of Gd, GdH2 and NdH2 single crystal films

Journal of Physics Condensed Matter IOP Publishing 12:23 (2000) 5011

Authors:

S Hémon, RA Cowley, RCC Ward, MR Wells, L Douysset, H Ronnow

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Magnetism in lanthanide superlattices

Physica B Condensed Matter Elsevier 283:1-3 (2000) 180-183

Authors:

JP Goff, RS Sarthour, DF McMorrow, F Yakhou, A Stunault, RCC Ward, MR Wells

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Structural symmetry of YD3 epitaxial thin films

Physical Review B American Physical Society (APS) 61:19 (2000) 12701-12704

Authors:

TJ Udovic, Q Huang, RW Erwin, B Hjörvarsson, RCC Ward

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Magnetic properties of epitaxial (110) multilayer films of DyFe2 and YFe2

Journal of Applied Physics AIP Publishing 87:9 (2000) 6839-6841

Authors:

M Sawicki, GJ Bowden, PAJ de Groot, BD Rainford, RCC Ward, MR Wells

Abstract:

Laves phase DyFe2/YFe2 multilayers have been grown epitaxially on a YFe2 seed layer, with a (110) growth direction. Magnetic measurements taken in applied fields of up to 12 T, and from 5 K to room temperature, show that short period multilayers (∼100 Å) behave, collectively, as a single magnetic entity. As a result, it is possible to engineer magnetic compensation points, in a digital manner, by adjusting the thicknesses of the alternate DyFe2 and YFe2 layers. Nevertheless, the magnetic response of the DyFe2/YFe2 structure and that of the YFe2 seed layer are not completely independent of one another. Because of a mismatch in the Fe–Fe magnetic exchange at the multilayer/seed interface, a 180° magnetic soliton-like domain (“magnetic twister”) is set up in the top of the YFe2 seed layer. A semiquantitative model describing the properties of the magnetic twister is presented and discussed.

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Structural changes to epitaxial (0001) holmium layers during hydrogen loading

Journal of Physics D IOP Publishing 33:8 (2000) 894

Authors:

EJ Grier, O Kolosov, AK Petford-Long, RCC Ward, MR Wells, B Hjörvarsson

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Roger Ward

Sub department

Magnetic structure of Gd, GdH2 and NdH2 single crystal films

Authors:

Magnetism in lanthanide superlattices

Authors:

Structural symmetry of YD3 epitaxial thin films

Authors:

Magnetic properties of epitaxial (110) multilayer films of DyFe2 and YFe2

Authors:

Abstract:

Structural changes to epitaxial (0001) holmium layers during hydrogen loading

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