693.932 PEOPLE
| People | Locations | Statistics |
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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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Lightfoot, Philip
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (51/51 displayed)
- 2023Manipulation of structure and optoelectronic properties through bromine inclusion in a layered lead bromide perovskitecitations
- 2023Manipulation of structure and optoelectronic properties through bromine inclusion in a layered lead bromide perovskitecitations
- 2023K2Fe(C2O4)2 : an oxalate cathode for Li/Na ion batteries exhibiting a combination of multielectron cation and anion redoxcitations
- 2023K2Fe(C2O4)2citations
- 2023K 2 Fe(C 2 O 4 ) 2 :an oxalate cathode for Li/Na ion batteries exhibiting a combination of multielectron cation and anion redoxcitations
- 2023K(_2)Fe(C(_2)O(_4))(_2): An Oxalate Cathode for Li/Na-Ion Batteries Exhibiting a Combination of Multielectron Cation and Anion Redoxcitations
- 2022Magnetically driven dielectric and structural behavior in Bi0.5La0.5FeO3citations
- 2021Structural features in some layered hybrid copper chloride perovskitescitations
- 2019New sarcosine-metal halide complexes related to the ferroelectric TSCCcitations
- 2018New sarcosine-metal halide complexes related to the ferroelectric TSCCcitations
- 2016New iron tetrazolate frameworks : synthesis temperature effect, thermal behaviour, Mössbauer and magnetic studiescitations
- 2016Metal-dependent structural variations and the peculiarities of hydrogen-bonded networks in the highly hydrated copper(II), nickel(II) and palladium(II) complexes of bis-dioxocyclamcitations
- 2016Understanding ferroelectricity in layered perovskites : new ideas and insights from theory and experimentscitations
- 2016Magnetic Properties of Transition Metal Fluoride Perovskitescitations
- 2015Understanding ferroelectricity in layered perovskites:new ideas and insights from theory and experimentscitations
- 2015Metal-dependent structural variations and the peculiarities of hydrogen-bonded networks in the highly hydrated copper(II), nickel(II) and palladium(II) complexes of bis-dioxocyclamcitations
- 2015New iron tetrazolate frameworkscitations
- 2015Understanding ferroelectricity in layered perovskites: new ideas and insights from theory and experimentscitations
- 2015New iron tetrazolate frameworks: synthesis, temperature effect, thermal behaviour, Mössbauer and magnetic studiescitations
- 2015New iron tetrazolate frameworks:synthesis temperature effect, thermal behaviour, Mössbauer and magnetic studiescitations
- 2015Understanding ferroelectricity in layered perovskitescitations
- 2014Unusual Phase Behavior in the Piezoelectric Perovskite System, LixNa1-xNbO3citations
- 2014Structural study of La1-xYxScO3, combining neutron diffraction, solid-state NMR, and first-principles DFT calculationscitations
- 2013Structural study of La 1-x Y x ScO 3 , combining neutron diffraction, solid-state NMR, and first-principles DFT calculationscitations
- 2013Unusual Phase Behavior in the Piezoelectric Perovskite System, Li x Na 1 -x NbO 3citations
- 2013Unusual Phase Behavior in the Piezoelectric Perovskite System, LixNa1-xNbO3citations
- 2013Structural study of La1-xYxScO3, combining neutron diffraction, solid-state NMR, and first-principles DFT calculationscitations
- 2012Magnetically driven dielectric and structural behavior in Bi 0.5 La 0.5 FeO 3citations
- 2012Structural, magnetic and electrical properties of the hexagonal ferrites MFeO3 (M=Y, Yb, In)citations
- 2012Magnetically driven dielectric and structural behavior in Bi0.5La0.5FeO3citations
- 2012Solid State Structural Variations in Copper(II) Complexes of Open-Chain and Macrocyclic Malonamide-Derived Ligandscitations
- 2011High-temperature phase transitions of hexagonal YMnO 3citations
- 2011High-temperature phase transitions of hexagonal YMnO3citations
- 2009A novel non-centrosymmetric metallophosphate-borate compound via ionothermal synthesiscitations
- 2009Lanthanide N,N '-piperazine-bis(methylenephosphonates) (Ln = La, Ce, Nd) that display flexible frameworks, reversible hydration and cation exchangecitations
- 2009Leakage and Proton Conductivity in the Predicted Ferroelectric CsBiNb 2 O 7citations
- 2009Structural phase transitions in the relaxor ferroelectric Pb 2 Bi 4 Ti 5 O 18citations
- 2009Leakage and Proton Conductivity in the Predicted Ferroelectric CsBiNb2O7citations
- 2008A new approach to synthesis of layered fluorites containing molecular anions: Synthesis of Ln(2)O(2)CO(3), K(LnO)CO3, and Ln(2)O(2)CrO(4) via metathesis reactionscitations
- 2007SrSeO3 from a combined X-ray and neutron powder diffraction studycitations
- 2006Novel open-framework architectures in lanthanide phosphonatescitations
- 2004Phase equilibria in the Bi 2 TeO 5 -Bi 2 SeO 5 system and a high temperature neutron powder diffraction study of Bi 2 SeO 5citations
- 2004A new zinc pyromellitate, [(C 4 N 2 H 12 ) 0.5 (NH 2 (CH 3 ) 2 ][Zn(C 10 H 2 O 8 )]·1.78H 2 O, with a layered structurecitations
- 2003Orientation dependence of ferroelectric properties of pulsed-laser ablated Bi 4-x Nd x Ti 3 O 12 filmscitations
- 2003A new family of layered bismuth oxohalides
- 2001Azamacrocycles and the azaoxacryptand 4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8] hexacosane as structure-directing agents in the synthesis of microporous metalloaluminophosphates
- 2001Ferroelectric properties and crystal structure of the layered intergrowth phase Bi 3 Pb 2 Nb 2 O 11 Clcitations
- 2001Solid-state transformations of zinc 1,4-benzenedicarboxylates mediated by hydrogen-bond-forming molecules
- 2001Variable-Temperature Microcrystal X-ray Diffraction Studies of Negative Thermal Expansion in the Pure Silica Zeolite IFRcitations
- 2000The crystal structures of BiTeO 3 I, NdTeO 3 X (X = Cl, Br) and Bi 5 TeO 8.5 I 2 : some crystal chemistry peculiarities of layered Bi(Ln)-Te oxyhalides
- 2000Negative thermal expansion in Y 2 (WO 4 ) 3
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article
Leakage and Proton Conductivity in the Predicted Ferroelectric CsBiNb2O7
Abstract
The layered perovskite CsBiNb2O7 has been reinvestigated in the light of recent predictions of ferroelectric behavior. Variable temperature powder neutron diffraction experiments show that this material retains polar symmetry (space group P21am) up to at least 900 °C, with only a slight decrease in net polarization up to this temperature, calculated using a simple ionic model. However, ac impedance measurements show only a modest dielectric constant (19-27) throughout the temperature range studied. Moreover, convincing evidence for ferroelectric behavior in polarizationselectric field loops could not be obtained because of overriding electrical conductivity. Further measurements of electrical behavior, at different temperatures and under both “wet” and “dry” atmospheres, provide clear evidence that CsBiNb2O7 is hygroscopic, with water uptake resulting in significant protonic conductivity. Even in the “dehydrated” state the material is a semiconductor with a modest conductivity of 3.8 μS cm-1 at 250 °C. Although ferroelectric behavior is not observed in the samples studied here, we cannot rule out the possibility that ferroelectricity might be obtained in samples processed under appropriate conditions.