Extended Data Fig. 14: Magnetic-susceptibility background and smoothing.
From: RETRACTED ARTICLE: Evidence of near-ambient superconductivity in a N-doped lutetium hydride

a–c, The ZFC and FC magnetization versus temperature at 8 kbar used to construct Fig. 3a, along with a linear fit to the data at temperatures above the transition temperature, which was used for the background subtraction. d, The ZFC and FC curves with the linear backgrounds shown in b and c subtracted out, as well as with a ten-point adjacent-average smoothing applied. e, The measured cell background at 60 Oe for the HMD cell used for the d.c. measurements.