Abstract
We report the electrical resistivity measurements of (Fe2As2)(Ca6(Al, Ti)4Oy) polycrystalline sample under hydrostatic pressure using a cubic-anvil apparatus. The temperature dependence of the normal state resistivity exhibits metallic behavior. The ρ(T) curve is convex upward at low pressure, and it approaches T-linear dependence by applying high pressure. The superconductivity is suppressed by application of pressure. The onset temperature of superconductivity, which is 38 K at ambient pressure, decreases to 28 K at 8 GPa.
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