دورية
Superconducting properties of a mixed anion layered compound, Ca and F co-doped LaFeAsO with T c = 31.5 K
| العنوان: | Superconducting properties of a mixed anion layered compound, Ca and F co-doped LaFeAsO with T c = 31.5 K |
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| المؤلفون: | Kaneyasu, Kodai, Sakagami, Ryosuke, Matoba, Masanori, Kamihara, Yoichi |
| المصدر: | Japanese Journal of Applied Physics; March 2019, Vol. 58 Issue: 3 p030911-030911, 1p |
| مستخلص: | Polycrystalline Ca and F co-doped LaFeAsO samples (La1[?]x Ca x FeAsO1[?]y F y ) were synthesized by solid-state reactions. Samples with nominal composition: (y [?] x) [?] 0.05 did not show superconductivity at temperatures T > 4.2 K, although an anomalous kink of the r-T curves, which is related to crystallographic phase transitions, was observed at T [?] 150 K. Samples with nominal composition: (y [?] x) [?] 0.15 did exhibit superconductivity. The superconducting transition temperature (T c) of co-doped LaFeAsO with nominal composition: (x, y) = (0.25, 0.50) was determined to be T c = 31.5 K, which is higher than the highest T c value observed for LaFeAsO1[?]x F x materials synthesized under ambient pressure. |
| قاعدة البيانات: | Supplemental Index |
Full Text Finder | تدمد: | 00214922 13474065 |
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