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The compositions and Te/Bi ratio of the Bi–Te thin films fabricated without a pre-deposited Cr layer at high substrate temperature.
| Nominal composition | Nominal Te/Bi | Actual composition | Actual Te/Bi |
|---|---|---|---|
| Bi2Te3+x/x = −0.1 | 1.45 | Bi2Te2.93 | 1.465 |
| Bi2Te3+x/x = 0.0 | 1.50 | Bi2Te2.95 | 1.475 |
| Bi2Te3+x/x = 0.0 | 1.50 | Bi2Te2.99 | 1.495 |
| Bi2Te3+x/x = 0.1 | 1.55 | Bi2Te3.06 | 1.530 |
| Bi2Te3+x/x = 0.6 | 1.80 | Bi2Te3.57 | 1.785 |
