Fig. 1. (Color online) (a) A15 crystal structure of Ti3Sb. The Sb (blue) atoms form a body-centered cubic structure, while the Ti (red) chains are oriented orthogonally in three directions on the edges of the cube. (b) Zero-field-cooled (ZFC) and field-cooled (FC) magnetizations measured in an applied magnetic field of 1 mT, which reveals superconducting transition temperature Tc∼5.6 K.
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