Table 1 Results of chemical analyses, evolutions of lattice constants and thermal expansion constants, and Tc in examined Co1−xNixZr2. Tc with bracket indicates filamentary superconductivity.
Nominal x | x (EDX) | a (Å) at 303 K | c (Å) at 303 K | c/a at 303 K | αa (μK−1) | αc (μK−1) | β (μK−1) | Tc (K) |
|---|---|---|---|---|---|---|---|---|
0 | 0 | 6.360 (3) | 5.514 (3) | 0.8670 (6) | 25.6 (6) | − 20 (1) | 31 (1) | 5.9 |
0.1 | 0.111 (3) | 6.375 (3) | 5.475 (3) | 0.8589 (6) | 20.2 (8) | − 14 (1) | 27 (2) | 6.4 |
0.2 | 0.216 (6) | 6.3750 (9) | 5.428 (1) | 0.8514 (2) | 21.1 (6) | − 4.6 (9) | 37 (1) | 6.1 |
0.3 | 0.312 (2) | 6.377 (3) | 5.391 (2) | 0.8454 (5) | 14.9 (6) | − 3 (1) | 27 (1) | 5.1 |
0.4 | 0.417 (3) | 6.415 (1) | 5.384 (2) | 0.8393 (3) | 14.0 (7) | − 1 (1) | 27 (2) | 4.1 |
0.5 | 0.544 (6) | 6.425 (1) | 5.350 (1) | 0.8327 (3) | 15.1 (5) | 1.4 (9) | 32 (1) | 3.2 |
0.6 | 0.635 (5) | 6.450 (2) | 5.336 (3) | 0.8273 (8) | 23.6 (7) | 2 (2) | 48 (2) | 2.5 |
0.7 | 0.752 (4) | 6.469 (3) | 5.288 (3) | 0.8175 (6) | 14.4 (9) | 15 (2) | 43 (3) | (2.4) |
0.8 | 0.824 (2) | 6.481 (3) | 5.279 (3) | 0.8145 (6) | 7 (1) | 11 (2) | 25 (3) | (2.5) |
0.9 | 0.937 (3) | 6.491 (4) | 5.261 (3) | 0.8105 (7) | 10.5 (6) | 12 (1) | 33 (2) | (2.5) |
1 | 1 | 6.509 (6) | 5.259 (4) | 0.8081 (9) | 15.8 (5) | 17 (1) | 49 (1) | (2.0) |
