Table 3.
Percent change in magnetic properties as a function of peak current.
| LW-ONW (102.4 kA) | LW-NINW (102.4 kA) | OBS1 (103.2 kA) | ECF2LAP (101.6 kA) | R-1 (~25 kA) | R-1 (7.0 kA) | K38-PC2 (23.4 kA) | K38-PC2 (7.0 kA) | SHV347-B (~25 kA) | SHV347-B (7.2 kA) | |
|---|---|---|---|---|---|---|---|---|---|---|
| Ms (A·m2/kg) | ↑27% | ↑36% | ↑2595% | ↑224% | ↑21% | ↑42% | ↑15% | ↑3% | ↑19% | ↑1% |
| Mr (A·m2/kg) | ↓13% | ↓14% | ↑350% | ↑7% | 0% | ↓8% | ↓10% | 0% | ↓6% | ↓6% |
| Hc (kA/m) | ↓16% | ↓27% | ↓31% | ↓28% | ↓10% | ↓17% | ↓26% | ↓2% | ↓12% | ↓6% |
| R-1 (25.4 kA) | R-1 (7.2 kA) | K38-PC2 (25.6 kA) | K38-PC2 (6.9 kA) | SHV347-B (24.9 kA) | SHV347-B (7.0 kA) | |||||
| Ms (A·m2/kg) | ↑153% | ↑204% | ↑16% | ↑6% | ↑29% | ↑7% | ||||
| Mr (A·m2/kg) | ↑8% | ↑25% | 0% | ↓3% | ↑3% | ↓12% | ||||
| Hc (kA/m) | ↓36% | ↓58% | ↓19% | ↓5% | ↓11% | ↓20% |
Measurement of all samples in upper half of the table; Repeated measurement of intermediate samples in the lower half of the table to check for pre-experimental consistency and post-experimental variability. Saturation magnetization (Ms) increases for all samples, but the increase is more significant for the acidic pseudo-ash (OBS1 and ECF2LAP) compared to the basic samples (LW-NINW and LW-ONW) and intermediate samples (R-1, K38-PC2, SHV347-B). Remanent magnetization (Mr) decreases for the basic samples, increases for the acidic samples, and both increases and decreases for the intermediate samples. Coercivity (Hc) decreases for all samples. Percent change in values is generally greater for more compositionally evolved samples and for those subjected to higher peak currents.