XRD pattern of YBaCo4O7 with Reitveld refinement.
Table 1
YBaCo4O7 different XRD parameters; space group - P63mc, a = 6.2874 Å, c = 10.2533 Å, volume = 660.9953 Å3, χ2 = 1.351, Rwp = 19.5, Rexp = 16.7.
| Atom | Atom site multiplicity | X | Y | Z | Occupancy |
|---|---|---|---|---|---|
| Y | 2b | 0.66667 | 0.33334 | 0.87855 | 0.16667 |
| Ba | 2b | 0.66667 | 0.33334 | 0.50000 | 0.16667 |
| Co1 | 2a | 0.00000 | 0.00000 | 0.44028 | 0.16667 |
| Co2 | 6c | 0.18987 | 0.85218 | 0.67724 | 0.50000 |
| O1 | 6c | 0.38893 | 0.47100 | 0.71181 | 0.50000 |
| O2 | 2a | 0.00000 | 0.00000 | 0.22156 | 0.16667 |
| O3 | 6c | 0.12436 | 0.80951 | 0.54566 | 0.50000 |
(a) SEM image and (b) EDX pattern of YBaCo4O7.
Table 2
Elemental composition details in wt.% and at.% of YBaCo4O7 obtained from EDX pattern.
| Element | wt.% | at.% |
|---|---|---|
| O K | 30.42 | 68.66 |
| Co K | 29.01 | 17.77 |
| Y L | 20.27 | 8.23 |
| Ba L | 20.30 | 5.34 |
| Total | 100.00 | 100.00 |
Raman spectrum of YBaCo4O7 in the 100 cm−1to 1600 cm−1region.
Resistance vs. temperature at 0 T and 8 T magnetic field.
lnp vs. T−1/4 (K−1/4) at 0 T and 8 T with linear fit.
M (emu ) vs. T (K) for ZFC, FC and FCW for YBaCo4O7 under 1 T magnetic field.
Isothermal magnetization moment (emu) vs. magnetic field H (Oe).