| 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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Grin, Yuri
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2022FeWO 4 Single Crystals: Structure, Oxidation States, and Magnetic and Transport Propertiescitations
- 2021Thermoelectric characterization of the clathrate-I solid solution Ba 8−δ Au x Ge 46−xcitations
- 2020Synthesis of plasmonic Fe/Al nanoparticles in ionic liquidscitations
- 2019Complex magnetic phase diagram of metamagnetic MnPtSi
- 2019Complex magnetic phase diagram of metamagnetic MnPtSi.citations
- 2018Local magnetism in MnSiPt rules the chemical bondcitations
- 2017Enhancement of the Thermoelectric Properties of FeGa3-type Structures with Group 6 Transition Metals: A Computational Explorationcitations
- 2014Ca3Pt4+xGe13−y and Yb3Pt4Ge13: new derivatives of the Pr3Rh4Sn13 structure typecitations
- 2013TiGePt – a study of Friedel differencescitations
- 2013New Monoclinic Phase at the Composition Cu2SnSe3 and Its Thermoelectric Propertiescitations
- 2012Synthesis, Crystal Structure, and Physical Properties of the Type-I Clathrate Ba 8−δ Ni x □ y Si 46–x–ycitations
- 2012Surface investigation of intermetallic PdGa(1̅ 1̅ 1̅)citations
- 2012How to control the selectivity of palladium-based catalysts in hydrogenation reactions: the role of subsurface chemistrycitations
- 2011Refinement of the crystal structure of K8Ge44 square(2), an intermetallic clathrate Icitations
- 2011Nanostructuring of Ba8Ga16Ge30 clathrates
- 2011Structure of the orthorhombic Al13Co4(100) surface using LEED, STM and ab initio studiescitations
- 2010Physical properties of single-crystalline Ba 8 Ni 3.5 Ge 42.1 h 0.4citations
- 2010Crystal structure and transport properties of Ba 8 Ge 43 □ 3citations
- 2010ChemInform Abstract: EuGa2.+-.xGe4.+-.x: Preparation, Crystal Chemistry and Properties.
- 2010Valence of cerium ions in selected ternary compounds from the system Ce-Rh-Sn
- 2010ChemInform Abstract: BaGe5: A New Type of Intermetallic Clathrate.
- 2009Structure investigation of the (100) surface of the orthorhombic Al13Co4 crystalcitations
- 2008The first silicon-based cationic clathrate III with high thermal stability: Si172-xPxTey (x=2y, y>20).citations
- 2007Sn20.5□3.5As22I8: A Largely Disordered Cationic Clathrate with a New Type of Superstructure and Abnormally Low Thermal Conductivitycitations
- 2005Crystal structure, chemical bonding, and phase relations of the novel compound Co4Al7+xSi2-x (0.27 = x = 1.05)
Places of action
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article
ChemInform Abstract: EuGa2.+-.xGe4.+-.x: Preparation, Crystal Chemistry and Properties.
Abstract
he title compound was prepared from a mixture of the elements by melting in a glassy carbon crucible (HF furnace, argon atmosphere). EuGa2±xGe4∓x crystallizes in a new structure type (orthorhombic symmetry, space group Cmcm (no. 63), a=4.1571(3) A, b=11.268(1) A, c=13.155(1) A, V=616.2(2) A3, Z=4, Pearson symbol oC28) and is characterized by a 3D framework of 4-fold bonded (4b) E atoms (E=Ga,Ge) with channels parallel to the short a-axis. The europium atoms lie in the E18 holes of those channels. The structure can also be described as an intergrowth of segments from BaAl2Si2 and from a reconstructed diamond type of structure. The (Ga,Ge)24 framework of the title compound is equivalent to that of the Si(Al) atoms in the zeolite structure of CsAlSi5O12. Magnetic susceptibility measurements show that EuGa2±xGe4∓x undergoes a transition from a paramagnetic to an antiferromagnetic ordered state at about 9 K. In the paramagnetic region, an oxidation state of 2+ for europium (μeff≈8 μB/Eu) was obtained. The crystal chemical formula of EuGa2Ge4 is Eu2+[(4b)Ga1−]2[(4b)Ge0]4 according to a charge balanced Zintl phase. This was confirmed by quantum chemical calculations (TB-LMTO, ELF). However, like several other similar compounds, e.g. alkaline earth metal clathrates, EuGa2±xGe4∓x has a metal-like temperature dependence of the electrical resistivity with a low charge-carrier concentration in agreement with the low value of the calculated density of states.