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dc.contributor.supervisor Cadogan, Sean (Physics and Astronomy) en_US
dc.contributor.author Susilo, Resta
dc.date.accessioned 2012-04-03T13:49:58Z
dc.date.available 2012-04-03T13:49:58Z
dc.date.issued 2012-02-08 en_US
dc.identifier.citation R A Susilo et al 2012 J. Phys.: Conf. Ser. 340 012071 en_US
dc.identifier.uri http://hdl.handle.net/1993/5235
dc.description.abstract The magnetic structures and spin reorientations of RGa (R = Gd, Dy, Ho and Er) intermetallic compounds have been investigated using neutron powder diffraction and rare earth Mössbauer spectroscopy. The aim has been to determine the magnetic structures of these compounds before and after their spin reorientation transitions and to understand the role of the crystal field and exchange interactions in the spin reorientation mechanism. The results have been compared with those found from previous single-crystal susceptibility measurements on RGa and the recent 119Sn Mössbauer spectroscopy work on Sn-doped RGa compounds. The magnetic structures obtained at low temperatures are a simple collinear ferromagnetic in DyGa, canted ferromagnetic in HoGa and a non-collinear ferromagnetic in GdGa. The spin reorientation in ErGa was also observed by 166Er Mössbauer spectroscopy. These results show that both the crystal field and exchange interactions play an important role in the reorientation mechanism. en_US
dc.publisher IOP Publishing en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject RGa intermetallic compounds en_US
dc.subject spin reorientations en_US
dc.subject magnetic structure en_US
dc.title Magnetic Order and Spin Reorientations of RGa (R=Gd,Dy,Ho and Er) Intermetallic Compounds en_US
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US
dc.degree.discipline Physics and Astronomy en_US
dc.contributor.examiningcommittee Williams, Gwyn (Physics and Astronomy) Bieringer, Mario (Chemistry) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note May 2012 en_US


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