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Ba Ti Fe As O: A new superconductor containing Fe As layers and Ti O sheets

Journal of the American Chemical Society, ISSN: 0002-7863, Vol: 134, Issue: 31, Page: 12893-12896
2012
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Article Description

We have synthesized a new oxypnictide, Ba Ti Fe As O, via a solid-state reaction under a vacuum. The compound crystallizes in a body-centered tetragonal lattice, which can be viewed as an intergrowth of BaFe As and BaTi As O, thus containing Fe As layers and Ti O sheets. Bulk superconductivity at 21 K is observed after annealing the as-prepared sample at 773 K for 40 h. In addition, an anomaly in resistivity and magnetic susceptibility around 125 K is revealed, suggesting a charge- or spin-density wave transition in the Ti sublattice. © 2012 American Chemical Society.

Bibliographic Details

Sun, Yun-Lei; Jiang, Hao; Zhai, Hui-Fei; Bao, Jin-Ke; Jiao, Wen-He; Tao, Qian; Shen, Chen-Yi; Zeng, Yue-Wu; Xu, Zhu-An; Cao, Guang-Han

American Chemical Society (ACS)

Chemical Engineering; Chemistry; Biochemistry, Genetics and Molecular Biology

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