Effects of microwave heating in nanolaminated Nb2GeC synthesis

Electron–phonon interaction and superconductivity in hexagonal ternary carbides Nb2 AC (A: Al, S, Ge, As and Sn)

“…Note that the number of valence bands crossing the Fermi level is 6 in Nb 2 SC while it is 4 in the other three superconductors. Hence, it may be expected that Nb 2 SC will have a higher transition temperature than the materials considered, but qualitatively, the electronic band structures shown in figure 2 3.294 11.784 GGA [42] 3.278 11.491 GGA [46] 3.298 11.731 GGA [48] 3.320 11.709 0.095 GGA [52] 3 3.240 12.820 Exp [20] 3.235 12.565 Exp [36] 3.230 12.540 GGA [12] 3.265 12.655 0.093 GGA [49] 3 approximately 88%, 9% and 3% respectively. Hence the conduction properties are dominated by the Nb 4d electrons.…”

“…Like metals, they are electrically and thermally conductive, not susceptible to thermal shock, plastic at high temperature, exceptionally damage tolerant and readily machinable [5][6][7][8][9][10][11][12]. Like ceramics, they have high hardness, high creep lifetime, high oxidation resistance and thermal fatigue endurance [13][14][15][16][17][18][19][20]. These unique properties make them * matt.probert@york.ac.uk suitable for applications as advanced materials in many different technologies and under extreme conditions, including high temperature, high pressure or nuclear radiation environments [21].…”

Prediction of phonon-mediated superconductivity in new Ti-based M$$_2$$AX phases

“…MAX phases are hexagonal carbides or nitrides with the chemical formula M AX 1 where n = 1, 2, 3, etc. Here, M is an early transition metal, A is mainly group 13–16 and X is either C or N. MAX phases exhibit high damage tolerance, excellent thermal shock resistance, resistance to corrosion and oxidation, high creep lifetime, exceptionally damage-tolerant good machinability, and are electrically and thermally conductive 2 – 12 . The physical properties of hexagonal carbides and nitrides in the ternary M AX family phase have been extensively studied due to their unusual combination of properties typically associated with metals and ceramics.…”

Does Cr2AlN Have the Highest Possible Superconducting Transition Temperature in the M2AX family?

“…The MAX phases are a fascinating family of materials, normally expressed as M n+1 AX n , n = 1, 2, 3, etc., where M is an early transition metal, A is an element from groups 12-16, and X is usually B, C or N [1][2][3]. They combine the metal-like properties of high electrical and thermal conductivity, machinability and mechanical strength [4][5][6][7][8][9][10][11] with the ceramic-like properties of good mechanical properties at high temperature and very good corrosion and oxidation resistance, high hardness, high creep lifetime [12][13][14][15][16][17][18][19]. These properties make them suitable for use as advanced materials in a variety of technologies and under extreme conditions.…”