| 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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Volkov, Sergey
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024The intrinsic twinning and enigmatic twisting of aragonite crystalscitations
- 2023Reversible Ultrathin PtO$_x$ Formation at the Buried Pt/YSZ(111) Interface Studied In Situ under Electrochemical Polarizationcitations
- 2019Potential-Induced Pitting Corrosion of an $mathrm{IrO_{2}(110)-RuO_{2}(110)/Ru(0001)}$ Model Electrode under Oxygen Evolution Reaction Conditionscitations
- 2019Potential-Induced Pitting Corrosion of an IrO2(110)-RuO2(110)/Ru(0001) Model Electrode under Oxygen Evolution Reaction Conditionscitations
- 2018β-Ca11B2Si4O22: six-fold twinning, crystal structure and thermal expansioncitations
- 2017Operando X-ray Investigation of Solid Oxide Fuel Cell Model Electrodes
- 2016Operando X-ray Investigation of Electrode/Electrolyte Interfaces in Model Solid Oxide Fuel Cellscitations
- 2015Incommensurate modulation and thermal expansion of Sr3B2 + xSi1 − xO8 − x/2solid solutionscitations
Places of action
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article
β-Ca11B2Si4O22: six-fold twinning, crystal structure and thermal expansion
Abstract
<jats:title>Abstract</jats:title> <jats:p>The low-temperature polymorph <jats:italic>β</jats:italic>-Ca<jats:sub>11</jats:sub>B<jats:sub>2</jats:sub>Si<jats:sub>4</jats:sub>O<jats:sub>22</jats:sub> crystallizes as a monoclinic structure [space group is <jats:italic>P</jats:italic>2<jats:sub>1</jats:sub>/<jats:italic>c</jats:italic>, <jats:italic>a</jats:italic>=14.059(9), <jats:italic>b</jats:italic>=6.834(5), <jats:italic>c</jats:italic>=10.597(7) Å, <jats:italic>β</jats:italic>=100.735(8)°]. The crystal investigated by single-crystal X-ray diffraction was a twin composed of six individuals. The crystal structure is similar to that of mineral spurrite, Ca<jats:sub>5</jats:sub>(SiO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>CO<jats:sub>3</jats:sub>, and can be described as a framework of [CaO<jats:sub>5</jats:sub>] and [CaO<jats:sub>6</jats:sub>] polyhedra, the cavities of which are filled with [SiO<jats:sub>4</jats:sub>] and [BO<jats:sub>3</jats:sub>] groups. The orientation relationship of twin domains was investigated by electron backscatter diffraction (EBSD). Thermal expansion was studied by high-temperature X-ray powder diffraction. It is slightly anisotropic: <jats:italic>α</jats:italic><jats:sub>11</jats:sub>=10, <jats:italic>α</jats:italic><jats:sub>22</jats:sub>=16, <jats:italic>α</jats:italic><jats:sub>33</jats:sub>=12×10<jats:sup>−6</jats:sup>°C<jats:sup>−1</jats:sup> at 200°C.</jats:p>