Successive phase transitions under high pressure in FeTe0.92

Abstract

We performed magnetization and electrical resistivity measurements under high pressures of up to 19 GPa for FeTe0.92. The compound shows an anomaly in magnetization and resistivity at atmospheric pressure due to a structural distortion accompanied by a magnetic transition. We also observed magnetic and resistive anomalies under high pressure, suggesting that two pressure-induced phases exist at a low temperature. Unlike in FeAs-based compounds, no superconductivity was detected under high pressures of up to 19 GPa, although the anomaly at atmospheric pressure was suppressed by applying pressure.

15 pases, 5 figures, added mangnetization data

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• Pressure induced ferromagnetism in antiferromagnetic Fe_1.03Te
• Pressure-dependent magnetization and magnetoresistivity studies on the tetragonal FeS (mackinawite): revealing its intrinsic metallic character
• Superconductivity in PbO-type Fe chalcogenides
• Theoretical investigation of FeTe magnetic ordering under hydrostatic pressure
• Pressure-induced ferromagnetism due to an anisotropic electronic topological transition in Fe1.08Te
• Universal Superconductivity in FeTe and All-Iron-Based Ferromagnetic Superconductor Heterostructures
• Magnetism and Superconductivity of S-substituted FeTe
• On the bad metallicity and phase diagrams of Fe${}_{1+\delta }X$ ($X$ =Te, Se, S, solid solutions): an electrical resistivity study