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dc.contributor.authorAmir, Zainab Mohamed
dc.date.accessioned2019-08-07T13:00:42Z
dc.date.available2019-08-07T13:00:42Z
dc.identifier.urihttp://hdl.handle.net/10464/14408
dc.description.abstractThe pyrochlore (Eu(1-x)Dyx)2Ir2O7 for x = 0, 0.25, 0.50, 0.75, and 1.0 were prepared using solid-state reaction method. As the Dy concentration increases, the X-ray results indicate a systematic decrease of the cubic lattice parameter of (Eu(1-x)Dyx)2Ir2O7. We observed metal insulator transition in all compounds in addition two new anomalies at high temperatures in specifi c heat and resistivity results. The origin of these anoma- lies have not yet been identifi ed. The metal insulator transition temperature TMI of (Eu(1-x)Dyx)2Ir2O7 increases with the reduction in the lattice parameter. In the mag- netic susceptibility results, the effective magnetic moment increases with the increment of the Dy substitution for Eu ions. The magnetic fi eld dependence of resistivity was in- vestigated for all samples, negative and positive magnetoresistance effects are discussed.en_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectPyrochloreen_US
dc.subjectVan Vleck Paramagnetismen_US
dc.subjectSubstitute Dy for Euen_US
dc.subjectmagnetoresistanceen_US
dc.titleElectronic and Magnetic Properties of Pyrochlore (Eu(1-x)Dyx)2Ir2O7en_US
dc.typeElectronic Thesis or Dissertationen
dc.degree.nameM.Sc. Physicsen_US
dc.degree.levelMastersen_US
dc.contributor.departmentDepartment of Physicsen_US
dc.degree.disciplineFaculty of Mathematics and Scienceen_US
refterms.dateFOA2021-08-15T01:47:55Z


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