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dc.contributor.supervisorWiebe, Christopher (Chemistry)en_US
dc.contributor.authorSarte, Paul Maximo
dc.date.accessioned2015-09-11T14:47:28Z
dc.date.available2015-09-11T14:47:28Z
dc.date.issued2015
dc.date.issued2015
dc.identifier.urihttp://hdl.handle.net/1993/30751
dc.description.abstractThe purpose of this study was to investigate the effects of two perturbations, the application of an external magnetic field and randomised chemical pressure through Ti4+/Sn4+ substitution, on the dynamic spin ice state in Pr2Sn2O7. We show through magnetometry, heat capacity and powder neutron diffraction that the dynamic spin ice state in Pr2Sn2O7 is extremely fragile, requiring an external field of approximately 0.5 T to induce a transition into a long range ordered antiferromagnetic state, in accordance with the recorded behaviour of other spin ice materials. Similarly, the dynamic spin ice state in Pr2Sn2O7 only required a doping percentage of less than 2.5% to induce a transition away from the spin ice state. But instead of the predicted spin glass state, Pr2Sn2O7 assumes a cluster-type magnetic structure with extremely weak intercluster antiferromagnetic interactions, a magnetic structure that persists even to the highest doping level of 30%. The results of this thesis reveals that careful attention must be taken when selecting and placing the tetravalent cation in the 16c Wyckoff site in the pyrochlore structure, if one desires to have a spin ice state.en_US
dc.language.isoengen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectChemistryen_US
dc.subjectPhysicsen_US
dc.subjectMagnetismen_US
dc.subjectNeutronen_US
dc.subjectX-rayen_US
dc.subjectFrustrationen_US
dc.subjectSynthesisen_US
dc.titleMagnetic manifestations from the application of perturbations on the dynamic spin ice Pr2Sn2O7en_US
dc.typeinfo:eu-repo/semantics/masterThesis
dc.typemaster thesisen_US
dc.degree.disciplineChemistryen_US
dc.contributor.examiningcommitteevan Lierop, Johan (Physics and Astronomy) Bieringer, Mario (Chemistry) Herbert, David (Chemistry)en_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.noteOctober 2015en_US


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