A new approach to the creation of magnetically modulated structures

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dc.contributor.authorSaerbeck, Ten_AU
dc.contributor.authorKlose, Fen_AU
dc.contributor.authorLott, Den_AU
dc.contributor.authorMankey, GJen_AU
dc.contributor.authorLu, Zen_AU
dc.contributor.authorLeClair, PRen_AU
dc.contributor.authorStampfl, APJen_AU
dc.contributor.authorDanilkin, SAen_AU
dc.contributor.authorYethiraj, Men_AU
dc.contributor.authorSchreyer, Aen_AU
dc.date.accessioned2021-10-05T00:35:13Zen_AU
dc.date.available2021-10-05T00:35:13Zen_AU
dc.date.issued2010-02-03en_AU
dc.date.statistics2021-09-03en_AU
dc.description.abstractThe plethora of structural and magnetic properties observed in many transition metal alloys has attracted a great deal of interest in both the pure and applied sciences [1]. One key attribute of these alloys is that their electronic and magnetic properties are extremely sensitive to not only stoichiometry but order as well. In this paper we report on a new approach of creating a magnetically modulated structure, without changing composition or lattice structure, namely by artificially controlling the degree of chemical order in the material. The compound FePt3, as it is well known from bulk crystals, has the extraordinary property to evolve ferromagnetic (FM) or antiferromagnetic (AFM) phases determined by the degree of chemical ordering [2]. We succeeded in preparing epitaxial FePt3 superlattices of homogeneous composition consisting of an artificially modulated ferro/antiferromagnetic layering sequence simply by alternating the growth temperature. A direct effect of such an exotic FM/AFM interface is the observation of a high exchange bias upon field cooling through the Nèel temperature. In order to quantify the degree of antiferromagnetic ordering, high angle neutron diffraction has been performed using the triple axis spectrometer IN12 (Institute Laue Langevin, Grenoble) and TAIPAN (Australian Nuclear Science and Technology Organisation). Similar to chemically ordered bulk FePt3 the superlattice exhibits the onset of a (½ ½ 0) AFM Bragg peak below a temperature of TN=140 K (Bulk TN=160 K [2]). Using the polarized neutron reflectometry technique at the German research facility GKSS, Geesthacht, a detailed layer resolved magnetic characterization of the superlattice was carried out.en_AU
dc.identifier.citationSaerbeck, T., Klose, F., Lott, D., Mankey, G. J., Lu, Z., LeClair, P. R., Stampfl, A. P. J., Danilkin, S., Yethiraj, M., & Schreyer, A. (2010). A new approach to the creation of magnetically modulated structures. Paper presented to the 34th Annual Condensed Matter and Materials Meeting 2010, Waiheke Island Resort, Waiheke, Auckland, New Zealand 2 - 5 February 2010. Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2010/en_AU
dc.identifier.conferenceenddate5 February 2010en_AU
dc.identifier.conferencename4th Annual Condensed Matter and Materials Meeting 2010en_AU
dc.identifier.conferenceplaceAuckland, New Zealanden_AU
dc.identifier.conferencestartdate2 February 2010en_AU
dc.identifier.isbn978-0-646-53897-6en_AU
dc.identifier.urihttps://physics.org.au/wp-content/uploads/cmm/2010/en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11875en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectAlloysen_AU
dc.subjectMetalsen_AU
dc.subjectFerromagnetic materialsen_AU
dc.subjectAntiferroelectric materialsen_AU
dc.subjectStoichiometryen_AU
dc.subjectCrystal latticesen_AU
dc.subjectSpectrometersen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectBragg curveen_AU
dc.titleA new approach to the creation of magnetically modulated structuresen_AU
dc.typeConference Abstracten_AU
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