ChemInform Abstract: Stacking Variants and Superconductivity in the Bi—O—S System.

Abstract

Stacking Variants and Superconductivity in the Bi-O-S System. -The new compounds Bi2OS2 (I) and Bi3O2S3 (II) are prepared from mixtures of Bi2S3, Bi2O3, and S (430-520°C, 10-17 h) and characterized by powder XRD and magnetic measurements. (I) is non-superconducting, whereas (II) is a superconductor with a critical temperature of 4.5 K. Superconductivity rapidly disappears as Bi2OS2-like stacking faults are introduced in (II). -(PHELAN, W. A.; WALLACE, D. C.; ARPINO, K. E.; NEILSON, J. R.; LIVI, K. J.; SEABOURNE, C. R.; SCOTT, A. J.; MCQUEEN*, T. M.; J. Am. Chem. Soc. 135 (2013) 14, 5372-5374, http://dx.