Superconductivity induced by heat treatment under high pressure in PrFeAsO(0.75)

作者：Ding Qingping^*; Shi Yangguang; Huang Hongbo; Tang Shaolong; Yang Shaoguang

来源：Superconductor Science and Technology, 2008, 21(12): 125018.

DOI：10.1088/0953-2048/21/12/125018

PrFeAsO(0.75) was prepared at 900 degrees C using the solid state reaction method which shows no superconductivity and a strong resistivity anomaly at 150 K. The resistivity anomaly was usually ascribed to the spin density wave ( SDW) instability. After further treatment under a high pressure of 6 GPa at a temperature of 1300 degrees C for 2 h, the resistivity of PrFeAsO(0.75) is two orders lower than that before treatment and a superconducting transition is observed.

• 出版日期2008-12
• 单位南京大学