Abstract
Phase diagrams of as-grown and O 2-annealed FeTe 1-xSe x determined from magnetic susceptibility measurement were obtained. For as-grown samples, the antiferromagnetic order was fully suppressed in the range region x≥0.15, and weak superconductivity appeared when x≥0.1. Beginning at x=0.5, weak superconductivity was found to evolve into bulk superconductivity. Interestingly, for O 2-annealed samples, complete suppression of magnetic order and the occurrence of bulk superconductivity were observed when x≥0.1. We found that O 2-annealing induces bulk superconductivity for FeTe 1-xSe x. Oxygen probably plays a key role in the suppression of the magnetic order and the appearance of bulk superconductivity.
Original language | English |
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Pages (from-to) | 1135-1138 |
Number of pages | 4 |
Journal | Solid State Communications |
Volume | 152 |
Issue number | 13 |
DOIs | |
Publication status | Published - Jul 2012 |
Externally published | Yes |
Keywords
- A. FeTe Se
- B. O -annealing
- D. Magnetization