| 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 |
|
Bell, Thomas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2020Binary Intermetallics in the 70 atom % R Region of Two R-Pd Systems (R = Tb and Er)citations
- 2018From the Nonexistent Polar Intermetallic Pt3Pr4 via Pt2- xPr3 to Pt/Sn/Pr Ternariescitations
- 2018An Obscured or Nonexistent Binary Intermetallic, CO7Pr17, Its Existent Neighbor Co2Pr5, and Two New Ternaries in the System Co/Sn/Pr, CoSn3Pr1−x, and Co2−xSn7Pr3citations
- 2011Evaluation of the biocompatibility of S-phase layers on medical grade austenitic stainless steels.citations
- 2007Low-temperature plasma surface alloying of medical grade austenitic stainless steel with carbon and nitrogencitations
- 2006The role of sublayer in determining the load bearing capacity of nitrocarburised pure ironcitations
- 2004Surface chemical and nanomechanical aspects of air PIII-treated Ti and Ti-alloycitations
- 2002Surface engineering of Timet 550 with oxygen to form a rutile-based, wear-resistant coatingcitations
- 2001Methods of case hardening
- 2001Duplex surface treatment of high strength Timetal 550 alloy towards high load-bearing capacitycitations
Places of action
| Organizations | Location | People |
|---|
article
From the Nonexistent Polar Intermetallic Pt3Pr4 via Pt2- xPr3 to Pt/Sn/Pr Ternaries
Abstract
<p>Although the Pt-Pr phase diagram has been explored well, recent work on rare-earth metal cluster halides with endohedral transition metal atoms has provided a new binary intermetallic that is nonexistent in the known phase diagram: The binary Pt<sub>3</sub>Pr<sub>4</sub> (1) crystallizes in a new structure type (mP56, P2<sub>1</sub>/c, a = 12.353(2) Å, b = 7.4837(9) Å, c = 17.279(2) Å, β = 118.003(7)°, Z = 8) with six crystallographically independent Pt as well as eight Pr positions. The subsequent detailed investigation has led to another previously unreported, binary phase with the Ga<sub>2</sub>Gd<sub>3</sub> structure type, Pt<sub>2-x</sub>Pr<sub>3</sub> (2, tI80, I4/mcm, a = 11.931(9) Å, c = 14.45(1) Å, Z = 16), that is practically overlapping with the rhombohedral Pt<sub>2</sub>Pr<sub>3</sub> existing in the phase diagram. Application of different tin containing fluxes to reproduce the newly detected phases brought about two almost iso-compositional ternary compounds with Sn, Pt<sub>4</sub>Sn<sub>6</sub>Pr<sub>2.91</sub> (3), and Pt<sub>4</sub>Sn<sub>6</sub>Pr<sub>3</sub> (4), as well as Pt<sub>12</sub>Sn<sub>24</sub>Pr<sub>4.84</sub> (5). 3 is a representative of the Pt<sub>4</sub>Ge<sub>6</sub>Ce<sub>3</sub> type (oP52, Pnma, a = 7.2863(3) Å, b = 4.4909(2) Å, c = 35.114(2) Å), while 4 represents a new variant of the prolific T<sub>4</sub>E<sub>6</sub>R<sub>3</sub> family (T = transition metal, E = main group (semi)metal, R = rare-earth metal; Pt<sub>4</sub>Sn<sub>6</sub>Pr<sub>3</sub>: oP52, Pnma, a = 27.623(1) Å, b = 4.5958(2) Å, c = 9.3499(5) Å). Pt<sub>12</sub>Sn<sub>24</sub>Pr<sub>5-x</sub> (5) crystallizes as a variant of the Ni<sub>8</sub>Sn<sub>16</sub>Gd<sub>3</sub> type (cI82, Im3?, a = 12.274(1) Å, Z = 2). Electronic structure calculations provide hints on the origin of the structural changes (pseudo-polymorphism) for Pt<sub>x</sub>Pr<sub>3</sub> with x = 1.97 and 2.00, respectively, and reveal that heteroatomic Pt-Pr bonding strongly dominates in both binaries while the addition of the reactive metal tin leads to dominating Pt-Sn bonding interactions in the ternaries; Pt-Pt bonding interactions are strong but represent a minority in the binaries and are not present at all in the ternaries.</p>