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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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Greaves, Colin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (37/37 displayed)
- 2020Structural, Magnetic, Magnetocaloric, and Magnetostrictive Properties of Pb1-xSrxMnBO4(x = 0, 0.5, and 1.0)citations
- 2018Magnetic ordering of the cryogenic magnetic cooling mineral gaudefroyite.citations
- 2017Absence of magnetic long range order in Y2CrSbO7: bond-disorder induced magnetic frustration in a ferromagnetic pyrochlorecitations
- 2017Topotactic fluorine insertion into the channels of FeSb2O4-related materials.citations
- 2015Supplementary data for The Structures and Magnetic Properties of FexCo1 xSb2O4 and MnxCo1 xSb2O4, 0 ≤ x ≤ 1
- 2014Variable temperature neutron diffraction study of crystal structure and transport pathways in oxide ion conductors Bi12.5Ln1.5ReO24.5 (Ln=Lu, Er)citations
- 2013Unprecedented High Solubility of Oxygen Interstitial Defects in La1.2Sr0.8MnO4+δ up to δ ∼ 0.42 Revealed by In Situ High Temperature Neutron Powder Diffraction in Flowing O2.citations
- 2013Reduction of Sr2MnO4 investigated by high temperature in situ neutron powder diffraction under hydrogen flow.citations
- 2012Structural and magnetic characterisation of CoSb2O4, and the substitution of Pb2+ for Sb3+citations
- 2011Crystallographic and magnetic characterisation of the brownmillerite Sr2Co2O5citations
- 2011The synthesis, structure, magnetic and electrical properties of FeSb2-xPbxO4citations
- 2011High-temperature redox chemistry of La1.5+xSr0.5-xCo0.5Ni0.5O4+delta (x = 0.0, 0.2) studied in situ by neutron diffractioncitations
- 2010The ionic conductivity and local environment of cations in Bi9ReO17citations
- 2010The structure and ionic conductivity of the fluorite-related isostructural materials Bi20Ca7NbO39.5, Bi10.75Ca4.375GaO22 and quenched Bi9ReO17citations
- 2010Crystal structure and oxide ion conductivity in cubic (disordered) and tetragonal (ordered) phases of Bi(25)Ln(3)Re(2)O(49) (Ln = La, Pr)citations
- 2010LaSrCoFeO5, LaSrCoFeO5F and LaSrCoFeO5.5: new La-Sr-Co-Fe perovskitescitations
- 2010Synthesis and characterization of La1.5+xSr0.5-xCo0.5Ni0.5O4 +/-delta (x=0, 0.2)citations
- 2009Influence of cooling rate on the structure and composition of NaxCoO2 (x similar to 0.65)citations
- 2009Structural and Magnetic Characterisation of La1+xSr1-xCo0.5M0.5O4 +/-delta (M = Cr, Mn)citations
- 2009Synthesis and characterization of La0.8Sr1.2Co0.5M0.5O4−δ (M=Fe, Mn)citations
- 2008Structural and magnetic characterisation of Aurivillius material Bi2Sr2Nb2.5Fe0.5O12citations
- 2008Synthesis and characterization of the K2NiF4 phases La1+xSr1-xCo(0.5)Fe(0.5)O(4-delta) (x=0, 0.2)citations
- 2007Crystal structure and electrical characterisation of Bi2NbO5F: an Aurivillius oxide fluoridecitations
- 2006Synthesis and structural and magnetic characterization of mixed manganese-copper n=1 Ruddlesden-Popper phases
- 2006Crystal structure and magnetic properties of Ca₂MnAlO₅.₅, an n=3 brownmillerite phasecitations
- 2005Structural and magnetic characterisation of Bi2Sr1.4La0.6Nb2MnO12 and its relationship to Bi2Sr2Nb2MnO12citations
- 2004The structural chemistry and oxide ion conducting properties of the new bismuth oxide sulphate Bi₈O₁₁(SO₄)citations
- 2004Crystallographic and magnetic structures of Y₀.₈Sr₂.₂Mn₂GaO₈-ɗ : a new vacancy-ordered perovskite structurecitations
- 2003YCa₃(MnO)₃(BO₃)₄ : A manganese borate containing ferromagnetic chains on a kagome latticecitations
- 2003Synthesis and Characterisation of the Reduced Double-Layer Manganite Sr₃Mn₂O₆₊xcitations
- 2003The structural chemistry of Bi₁₄MO₂₄ (M=Cr,Mo,W) phases: bismuth oxides containing discrete MO₄ tetrahedracitations
- 2002PbBa2Y1-xCaxCu307+delta:synthesis, structure and superconductivity
- 2002Staged fluorine insertion into manganese oxides with Ruddlesden-Popper structures:LaSrMnO4F and La1.2Sr1.8Mn2O7Fcitations
- 2002Structures & Magnetic Ordering in the BrownMillerite Phases, Sr₂MnGaO₅ and Ca₂MnALO₅citations
- 2002Synthesis and characterisation of reduced single layer manganite Sr₂MnO₃.₅₊xcitations
- 2001Cation distribution and magnetic structure of the ferrimagnetic spinel NiCO₂O₄citations
- 2001Synthesis and structure of Sr₂MnGaO₅, a new layered manganese oxidecitations
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article
Crystallographic and magnetic structures of Y₀.₈Sr₂.₂Mn₂GaO₈-ɗ : a new vacancy-ordered perovskite structure
Abstract
The anion-deficient perovskite Y0.8Sr2.2Mn2GaO8-delta (where delta similar to 0.1) has been synthesised and the crystal and magnetic structures determined by Rietveld analysis of neutron powder diffraction (NPD) data. The material has body-centred tetragonal symmetry (14/mmm, a = 7.6373(3) Angstrom and c = 15.6636(10) Angstrom) and consists of alternating layers of octahedral and tetrahedral polyhedra, the layers being perpendicular to [001]. The octahedral layers are preferentially occupied by manganese and the tetrahedral layers are a mixture of manganese and gallium. The precise cation distribution depends critically on preparative conditions. An unusual structural feature of these materials is the arrangement of oxygen vacancies in the tetrahedral layers: in the basic structure, isolated squares of corner-linked tetrahedra are formed instead of the chains that are observed in brownmillerite phases. Additional oxide ions in this layer probably allow the Mn ions to achieve distorted square pyramidal coordination. Low temperature NPD and magnetisation data indicate antiferromagnetic ordering below 100 K. (C) 2003 Elsevier Ltd. All rights reserved.