Ontology highlight
ABSTRACT:
SUBMITTER: Huyan S
PROVIDER: S-EPMC6478709 | biostudies-literature | 2019 Apr
REPOSITORIES: biostudies-literature
Huyan S S Deng L Z LZ Wu Z Z Zhao K K Sun J Y JY Wu L J LJ Zhao Y Y YY Yuan H M HM Gooch M M Lv B B Zhu Y Y Chen S S Chu C W CW
Scientific reports 20190423 1
Undoped CaFe<sub>2</sub>As<sub>2</sub> (Ca122) can be stabilized in two slightly different non-superconducting tetragonal phases, PI and PII, through thermal treatments. Upon proper annealing, superconductivity with a T<sub>c</sub> up to 25 K emerges in the samples with an admixture of PI and PII phases. Systematic low-temperature X-ray diffraction studies were conducted on undoped Ca122 samples annealed at 350 °C over different time periods. In addition to the diffraction peaks associated with ...[more]