Sillen-aurivillius intergrowth phases as templates for naturally layered multiferroics

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dc.contributor.authorLiu, Sen_AU
dc.contributor.authorMiiller, Wen_AU
dc.contributor.authorLiu, Yen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorLing, CDen_AU
dc.date.accessioned2014-04-22T00:12:15Zen_AU
dc.date.available2014-04-22T00:12:15Zen_AU
dc.date.issued2012-9-21en_AU
dc.date.statistics2014-04-22en_AU
dc.description.abstractThe ferroelectric Sillen-Aurivillius phase Bi5PbTi3O14Cl, a layered structure containing three-layer perovskite-type blocks, has been modified by substituting magnetic transition metal cations M3+ = Cr3+, Mn3+, or Fe3+ for 1/3 of the Ti4+ cations, accompanied by co-doping of Bi3+ for Pb2+. The aim of the modification was to produce naturally layered ferroelectromagnetic compounds. Rietveld refinements against high-temperature synchrotron X-ray powder diffraction data show that the resulting new compounds Bi6Ti2MO14Cl undergo non-centrosymmetric (P2an) to centrosymmetric (P4/mmm) ferroelectric phase transitions for Bi6Ti2CrO14Cl at 974.6(2) K, Bi6Ti2MnO14Cl at 913.5(6) K, and Bi6Ti2FeO14Cl at 1044.8(1) K. Ferroelectric properties were measured on Bi6Ti2FeO14Cl using piezoresponse force microscopy which showed typical ferroelectric hysteresis behavior in the polarization with varying field strength as well as a piezoelectric strain. Combined Rietveld refinements against X-ray and neutron powder diffraction data indicate a statistical 1:2 distribution of M3+ and Ti4+ across all three perovskite layers, resulting in highly strained structures (enhancing the ferroelectricity compared to Bi5PbTi3O14Cl) and pronounced spin-glass (cluster glass-type) behavior below T-irr(0) = 4.46 K that we have characterized by detailed magnetic susceptibility and heat capacity measurements. © 2012, American Chemical Society.en_AU
dc.identifier.citationLiu, S., Miiller, W., Liu, Y., Avdeev, M., & Ling, C. D. (2012). Sillen-aurivillius intergrowth phases as templates for naturally layered multiferroics. Chemistry of Materials, 24(20), 3932-3942. doi:10.1021/cm302342ven_AU
dc.identifier.govdoc4564en_AU
dc.identifier.issn0897-4756en_AU
dc.identifier.issue20en_AU
dc.identifier.journaltitleChemistry of Materialsen_AU
dc.identifier.pagination3932-3942en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/cm302342ven_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5456en_AU
dc.identifier.volume24en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical societyen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectBromineen_AU
dc.subjectChlorineen_AU
dc.subjectX-ray lasersen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectMicroscopyen_AU
dc.titleSillen-aurivillius intergrowth phases as templates for naturally layered multiferroicsen_AU
dc.typeJournal Articleen_AU
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