Studies of magnetic structure of La1-xSrxMnO3 colossal magnetoresistive perovskites

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dc.contributor.authorFinlayson, TRen_AU
dc.contributor.authorWu, Xen_AU
dc.contributor.authorErsez, Ten_AU
dc.contributor.authorSchulz, JCen_AU
dc.date.accessioned2021-09-06T02:53:36Zen_AU
dc.date.available2021-09-06T02:53:36Zen_AU
dc.date.issued2004-02-04en_AU
dc.date.statistics2021-08-23en_AU
dc.description.abstractThis class of materials, based on the compound LaMnO3, continues to be the focus of attention because they exhibit colossal magnetoresistance (CMR) [1] which could lead to possible applications in magnetic recording and field sensors. In addition to the technological applications, the materials are important from a fundamental point of view due to the strong correlations between transport, structural and magnetic behaviour. The origin of the CMR effect has been attributed to the presence of magnetic polarons above the ferromagnetic ordering temperature, Tc. From recent research, using a combination of powder neutron diffraction, polarisation analysis and small-angle neutron scattering together with magnetic measurements, we present diffuse scattering, spin dynamics and lattice and magnetic correlations results for the La1-xSrxMnO3 (x=0.125 and 0.175) compounds. The diffuse scattering in the neutron diffraction patterns increases as the temperature approaches Tc from low temperature and continues to increase above Tc. The scattering peak in the forward direction above Tc (Tc<T<1.6Tc) showed a Lorentzian-type q dependence. In the La0.875Sr0.125MnO3 sample the forward scattering peak has neutron spin-flip and non-spin-flip components indicating the presence of both lattice and magnetic type polarons above Tc.en_AU
dc.identifier.citationFinlayson, T. R., Wu, X., Ersez, T., & Schulz, J. C. (2004). Studies of magnetic structure of La1-xSrxMnO3 colossal magnetoresistive perovskites. Poster presented to the 28th Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, 3-6 February 2004. Retrieved from: https://www.physics.org.au/wp-content/uploads/cmm/2004/04handbook.pdfen_AU
dc.identifier.conferenceenddate6 February 2004en_AU
dc.identifier.conferencename28th Annual Condensed Matter and Materials Meetingen_AU
dc.identifier.conferenceplaceWagga Wagga, New South Walesen_AU
dc.identifier.conferencestartdate3 February 2004en_AU
dc.identifier.issn1037-1214en_AU
dc.identifier.otherWP3en_AU
dc.identifier.urihttps://www.physics.org.au/wp-content/uploads/cmm/2004/04handbook.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11595en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectPerovskitesen_AU
dc.subjectMaterialsen_AU
dc.subjectSensorsen_AU
dc.subjectCrystal latticesen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectDiffuse scatteringen_AU
dc.subjectSpinen_AU
dc.subjectSpin flipen_AU
dc.titleStudies of magnetic structure of La1-xSrxMnO3 colossal magnetoresistive perovskitesen_AU
dc.typeConference Posteren_AU
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