Abstract

Electrical resistivity and magnetic susceptibility measurements under high pressure were performed on an iron-based superconductor LaFePO. A steep increase in superconducting transition temperature ( T c ) of LaFePO with d T c /d P >4 K/GPa below P = 0.8 GPa was observed. These results are similar to isocrystalline LaFeAsO 1- x F x system reported previously. X-ray diffraction measurements were also performed under high pressure up to 10 GPa, where linear compressibility κ a and κ c are presented.

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