High temperature magnetic ordering in the 4d perovskite SrTcO3

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dc.contributor.authorRodriguez, EEen_AU
dc.contributor.authorPoineau, Fen_AU
dc.contributor.authorLlobet, Aen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorThorogood, GJen_AU
dc.contributor.authorCarter, MLen_AU
dc.contributor.authorSeshadri, Ren_AU
dc.contributor.authorSingh, DJen_AU
dc.contributor.authorCheetham, AKen_AU
dc.date.accessioned2011-02-28T03:32:52Zen_AU
dc.date.available2011-02-28T03:32:52Zen_AU
dc.date.issued2011-02-07en_AU
dc.date.statistics2011-02-07en_AU
dc.description.abstractWe present evidence for possibly the highest magnetic ordering temperature in any compound without 3d transition elements. Neutron powder diffraction measurements, at both time-of-flight and constant wavelength sources, were performed on two independently prepared SrTcO3 powders. SrTcO3 adopts a distorted perovskite structure with G-type antiferromagnetic ordering and has a moment of 1.87(4)μB per Tc cation at room temperature with an extraordinarily high Néel point close to 750°C. Electronic structure calculations reveal extensive mixing between the technetium 4d states and oxygen states proximal to the Fermi level. This hybridization leads to a close relationship between magnetic ordering temperature and moment formation in SrTcO3. © 2011, American Physical Societyen_AU
dc.identifier.citationRodriguez, E. E., Poineau, F., Llobet, A., Kennedy, B. J., Avdeev, M., Thorogood, G. J., Carter, M. L., Seshadri, R., Singh, D. J., & Cheetham, A. K. (2011). High temperature magnetic ordering in the 4d perovskite SrTcO3. Physical Review Letters, 106(6), 067201. doi:10.1103/PhysRevLett.106.067201en_AU
dc.identifier.govdoc3225en_AU
dc.identifier.issn0031-9007en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitlePhysical Review Lettersen_AU
dc.identifier.pagination67201en_AU
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.106.067201en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3096en_AU
dc.identifier.volume106en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectAntiferromagnetismen_AU
dc.subjectPerovskiteen_AU
dc.subjectTechnetiumen_AU
dc.subjectOxygenen_AU
dc.subjectElectronic structureen_AU
dc.subjectHybridizationen_AU
dc.titleHigh temperature magnetic ordering in the 4d perovskite SrTcO3en_AU
dc.typeJournal Articleen_AU
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