Table 3. µ-XRF results of the investigated substrate (crystal M1 grown from an arc-fusion feed) in p.p.m. by weight.
| Spectrum | Ca | Ti | V | Cr | Mn | Fe | Zn |
|---|---|---|---|---|---|---|---|
| Seed | 186 | 1 | 25 | 22 | 10 | 75 | < LOD |
| Crystal | 90 | 0 | 6 | 13 | 3 | 30 | < LOD |
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