Hyperfine parameters of double perovskite series \mathrm{Sr}_{2}\left(\mathrm{Co}_{1-x} \mathrm{Fe}_{x}\right) \mathrm{TeO}_{6}(x=0.25,0.5 and 0.75) at 300 K, (\delta: centre shift, \Delta: quadrupole splitting, \Gamma: the line width given as half-width, half-maximum (FWHM))
| \delta / \mathrm{mm} \mathrm{s}^{-1} x=0.25 | \Delta / \mathrm{mm} \mathrm{s}^{-1} | \Gamma / \mathrm{mm} \mathrm{s}^{-1} | Intensity/% | |
|---|---|---|---|---|
| Paramagneticdoublet | 0.36(2) | -0.226(2) | 0.4(2) | 18 |
| Iron-site (2a) | 0.39(2) | 0.191(2) | 0.46(2) | 58 |
| Iron-site (2d) | 0.46(2) x=0.5 | 1.121(2) | 0.52(3) | 24 |
| Paramagneticdoublet | 0.36(3) | -0.291(2) | 0.63(2) | 20 |
| Iron-site (2a) | 0.37(3) | 0.206(2) | 0.45(2) | 32 |
| Iron-site (2d) | 0.43(3) x=0.75 | 1.197(2) | 0.48(2) | 47 |
| Iron-site (2a) | 0.43(3) | 0.254(2) | 0.52(2) | 46 |
| Iron-site (2d) | 0.44(3) | 1.241(2) | 0.44(2) | 54 |