| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Bernini, Cristina
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Synergistic effect of graphene and nanodiamonds to achieve ultra-low friction on rough DLC coatingscitations
- 2024Fe(Se,Te) Thin Films Deposited through Pulsed Laser Ablation from Spark Plasma Sintered Targetscitations
- 2023Solubility limits, magnetic and magnetocaloric properties of MoB-type GdCo x Ni 1−x (0.47 ≤ x ≤ 0.72)citations
- 2023Cu3As: Uncommon Crystallographic Features, Low-Temperature Phase Transitions, Thermodynamic and Physical Properties
- 2022Four ternary silicides in the La-Ni-Si system:from polyanionic layers to frameworkscitations
- 2022Four ternary silicides in the La-Ni-Si system : from polyanionic layers to frameworkscitations
- 2022Four ternary silicides in the La-Ni-Si systemcitations
- 2021The role of etching anisotropy in the fabrication of freestanding oxide microstructures on SrTiO3(001), SrTiO3 (110), and SrTiO3 (111) substrates
- 2019Imaging Flux Avalanches in V 3 Si Superconducting Thin Filmscitations
- 2013Fabrication and electromechanical actuation of epitaxial SrTiO3 (0 0 1) microcantileverscitations
Places of action
| Organizations | Location | People |
|---|
article
Four ternary silicides in the La-Ni-Si system
Abstract
<p>The central part of the La-Ni-Si system has been investigated at 800 °C by means of single crystal X-ray diffraction, microscopy and analytical microprobe techniques. The result led to the identification of four new metal-rich silicides: LaNi<sub>2</sub>Si (R3̄m, a = 4.0263(3) Å, c = 15.066(2) Å, Z = 3), La<sub>2</sub>Ni<sub>3</sub>Si<sub>2</sub> (P2<sub>1</sub>/c, a = 6.8789(7) Å, b = 6.2167(3) Å, c = 12.214(1) Å, β = 90.92(1), Z = 4), La<sub>3</sub>Ni<sub>3</sub>Si<sub>2</sub> (Pnma, a = 7.501(2) Å, b = 14.316(4) Å, c = 6.149(2) Å, Z = 4), La<sub>6</sub>Ni<sub>7</sub>Si<sub>4</sub> (Pbcm, a = 6.066(1) Å, b = 7.488(1) Å, c = 29.682(5) Å, Z = 4). LaNi<sub>2</sub>Si belongs to the SrCu<sub>2</sub>Ga structure type, which is not represented among silicides, while La<sub>2</sub>Ni<sub>3</sub>Si<sub>2</sub> crystallizes in its own structure type. Both compounds feature layered polyanionic motifs consisting of Ni and Si, which are separated by La. Instead, La<sub>6</sub>Ni<sub>7</sub>Si<sub>4</sub> and La<sub>3</sub>Ni<sub>3</sub>Si<sub>2</sub> are characterized by polyanionic networks. The former compound belongs to the Pr<sub>6</sub>Ni<sub>7</sub>Si<sub>4</sub> structure type, with only two other representatives (Ce and Nd); the latter has been observed only with Rh and Ir. The two structures reveal close structural relationships having multiple identical slabs. Tight-binding electronic structure calculations by linear muffin-tin-orbital methods were performed for LaNi<sub>2</sub>Si, La<sub>2</sub>Ni<sub>3</sub>Si<sub>2</sub> and La<sub>3</sub>Ni<sub>3</sub>Si<sub>2</sub> to gain insights into their structure-bonding relationships. Their band structures suggest a metallic character for all compounds. The overall crystal orbital Hamilton populations are dominated by polar Ni-Si bonds, though homoatomic Ni-Ni and La-Ni(Si) bond contributions are not negligible. The variety of bonding patterns may serve as a logical explanation for the number of discovered compounds in this system as well as for the diversity of the observed structures.</p>