Table 1. Comparison among the performance parameters (external field, critical current density, oscillation power, oscillation frequency, and the minimum linewidth) of different STNO solutions and the ones reported in this work at zero field and for two thicknesses t (1.60 nm and 1.62 nm). Here Pmes is the measured maximum power integrated from the oscillation peak, Pmax is the maximum power delivered to a matched load, and the hyphen (−) indicates cases where no data are available.
| STNOs | H (Oe) | Jc (A/cm2) | Pmes (nW) | Pmax (nW) | f0 (GHz) | Δf0min (MHz) |
|---|---|---|---|---|---|---|
| Ref. 11 | 2500 | >3.0 × 107 | <1.0 | - | 6 ~ 10 | 6 |
| Ref. 16 | ≥2 | >5.3 × 107 | <0.003 | - | 2 ~ 3 | - |
| Ref. 17 | ≥300 | >9 × 106 | <0.1 | - | 2 ~ 4 | - |
| Ref. 18 | >4500 | >4.4 × 106 | 5.0 | - | ~0.78 | 1.1 |
| This work t = 1.60 nm | 0 | <5.4 × 105 | 18 | 63 | 0.6 ~ 1.5 | 28 |
| This work t = 1.62 nm | 0 | <1.2 × 105 | 11 | 36 | 0.6 ~ 1.0 | 33 |