Pressure dependence on superconducting transition temperature (Tc) was examined for iron-based superconductor LaFeAsO1-xFx, SmFeAsO1-xFx and LaFePO. The Tc's increase largely for LaFePO and LaFeAsO1-xFx with a small increase of pressure. The electrical resistivity measurements reveal the pressure-induced superconductivity in undoped LaFeAsO and SmFeAsO. X-ray diffraction measurements were also performed under high pressure up to 10 GPa for LaFePO and LaFeAsO1-xFx system, where the anisotropic decrease of the lattice constants was observed with applying pressure.
- High pressure
- Iron-based superconductor
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering