Superconductivity at 17 K in (Fe2P2)(Sr4Sc2O6): a new superconducting layered pnictide oxide with a thick perovskite oxide layer
By H. Ogino, Y. Matsumura, Y. Katsura, K. Ushiyama, S. Horii, K. Kishio, J. Shimoyama. 2009
196 citations recorded by the source corpus.
A new layered pnictide oxide (Fe2P2)(Sr4Sc2O6) has been synthesized by solid-state reaction. This material has an alternating layer stacking structure of anti-fluorite Fe2P2 and perovskite-based Sr4Sc2O6 oxide layers. The space group of the material is P4/nmm and the lattice constants a and c are 4.016 and 15.543 Å, respectively. The interlayer Fe–Fe distance corresponding to the c-axis length is the longest ever reported in the iron-based pnictides. In both magnetization and resistivity measurements, the present compound exhibited superconductivity below 17 K; this temperature is much higher than that for LaFePO and the highest in arsenic-free iron-based pnictide systems under ambient pressure.
Subfields: Accounting, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/58f3d2a6b7d29ec1a39af63076571a9cb656c2fc
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In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Superconductivity in iron compounds (2011, background): “The rather short [2.67 Å in the 11, 2.77 Å in the 122 , Guo et al. (2010), up to 2.84 Å in the 21311 and 2.85 Å in the 1111, Ishida, Nakai, and Hosono, 2009; Ogino et al., 2009] Fe-Fe spacings insure that the 3d Fe electrons take part in band formation.”