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- W146693945 abstract "Here is presented an experimental study of the low-temperature magnetic behaviour of the spin ice holmium titanate, Ho_2Ti_2O_7; stuffed spin ice, Ho_{2+x}Ti_{2-x}O_{7-x/2}; and neodymium zirconate, Nd_2Zr_2O_7. The main techniques utilised here are based on neutron scattering which gives information on the static and dynamic behaviour of materials.Stuffed spin ice represents the addition of holmium magnetic moments into holmium titanate. This addition of the Ho^3^+ affects the oxygen lattice which is responsiblefor the considerable magnetocrystalline anisotropy in these materials. Inelastic scattering measurements reveal that a crystal of Ho_{2.3}Ti_{1.7}O_{6.85} is a static magneticsystem at the lowest energies. Elastic neutron scattering on the same crystal revealsshort-range order that distinguishes it from spin ice.Neodymium zirconate, Nd_2Zr_2O_7, is a stoichiometric pyrochlore material isomorphousto holmium titanate in structure. Here a single crystal and a powder samplehave been investigated by both elastic and inelastic scattering. The powder and crystalsexhibit low temperature intensity in the same temperature range indicating alow temperature transition which has been shown to be second order. A field inducedtransition has also been studied, but its origin has not been established.Holmium titanate is a stoichiometric material unlike stuffed spin ice. Here a studyhas been conducted into scattering in the hhl plane under application of a magneticfield at a temperature of 60 mK. The results indicate a breaking of the orderedalpha-chain structure within the material as the field is removed." @default.
- W146693945 created "2016-06-24" @default.
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- W146693945 date "2010-04-28" @default.
- W146693945 modified "2023-09-27" @default.
- W146693945 title "Neutron scattering studies of frustrated magnets" @default.
- W146693945 hasPublicationYear "2010" @default.
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