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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Cussen, Edmund
Technological University Dublin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2017Insulating to metallic behaviour in the cation ordered perovskites Ba2Nd1−xFexMoO6citations
- 2016Microwave-assisted syntheis of highly crystalline, multifunctional iron oxide nanocomposites for imaging applicationscitations
- 2016Scalable continuous solvothermal synthesis of metal organic framework (MOF-5) crystalscitations
- 2015Structural and magnetic study of Yb3+ in the perovskites Sr2YbMO6 (M = Nb, Ta, Sb)citations
- 2014Structural and magnetic study of order−disorder behavior in the double perovskites Ba2Nd1−xMnxMoO6citations
- 2013Effect of synthesis conditions on formation pathways of metal organic framework (MOF-5) Crystalscitations
- 2013A neutron diffraction study of structural distortion and magnetic ordering in the cation-ordered perovskites Ba2Nd1−xYxMoO6citations
- 2010Spontaneous formation of crystalline lithium molybdate from solid reagents at room temperaturecitations
- 2010Lithium Ion conduction in oxidescitations
- 2008The structure of the lithium-rich garnets li6la2m2o12 and li6.4sr1.4la1.6m2o12 (m = sb, ta)citations
- 2008Switching on fast lithium ion conductivity in garnetscitations
- 2007Structural and magnetic study of the cation-ordered perovskites Ba2−xSrxErMoO6citations
- 2006Magnetic order arising from structural distortion: the structure and magnetic properties of Ba2LnMoO6citations
- 2005The first layered analogue of Sr2FeMoO6; the structure and electronic properties of Sr4FeMoO8citations
- 2004Adsorption of gases and vapors on nanoporous Ni-2(4,4 '-bipyridine)(3)(NO3)(4) metal-organic framework materials templated with methanol and ethanol: Structural effects in adsorption kineticscitations
- 2002Flexible sorption and transformation behavior in a microporous metal-organic frameworkcitations
- 2001Adsorption dynamics of gases and vapors on the nanoporous metal organic framework material Ni-2(4,4 '-bipyridine)(3)(NO3)(4): guest modification of host sorption behaviorcitations
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article
Insulating to metallic behaviour in the cation ordered perovskites Ba2Nd1−xFexMoO6
Abstract
The series of cation ordered double perovskites Ba2Nd1−xFexMoO6 undergo a compositionally-driven transition from localised to delocalised electronic behaviour, as exhibited in the end members Ba2NdMoO6 and Ba2FeMoO6 respectively.Rietveld structural analyses against neutron diffraction data indicate that all compounds are stoichiometric in oxygen and show replacement of Nd3+ with Fe3+ on the larger of the two octahedral sites in the cation-ordered structure.A tetragonal distortion persists up to x=0.25 and Ba2Nd0.9Fe0.1MoO6 shows freezing of magnetic moments below a spin glass transition temperature of 5 K.Ba2Nd0.75Fe0.25MoO6 shows high electrical resistivity with a temperature dependence indicative of fully localised electronic behaviour.Despite the Fe3+ occupation (0.25) being above the percolation limit (0.195) for the face centred cubic lattice, this compound shows no magnetic ordering at 2K.Compositions in the range 0.30 ≤ x ≤0.85 give a mixture of two perovskite phases with lattice parameters of ca. 8.4 and 8.1 Å.The single phase compositions Ba2Nd0.10Fe0.90MoO6 and Ba2Nd0.05Fe0.95MoO6form face centred cubic structures with long range magnetic ordering of the Fe3+ moments below ferrimagnetic ordering transitions of 270 and 285 K respectively.Neutron diffraction shows almost complete parallel alignment of the Fe3+ moments and, combined with conductivity measurements showing delocalised electronic behaviour in Ba2Nd0.10Fe0.90MoO6, indicate ferrimagnetic ordering of Fe3+ and delocalised Mo5+.