An Eu coordination polymer consolidated by 2,2′-biquinoline-4,4′-dicarboxylate

Sessions C707SiC single crystals, no magnetic signal was detected.We demonstrated that the intentionally created defects are responsible for the observed magnetism and deduced that carriers play an important role in defectinduced magnetism.Our results confirm the existence of defect-induced magnetism further and point out the necessary of tuning carrier to control the magnetism, providing some clues for tuning the magnetism of WBG semiconductors by defect engineering.