An unusual magnetic phenomenon in Mg doping [(CH3)2NH2] CoxMg1−x[HCOO]3 frameworks Zhenjun Fan, Rongzhao Liu, Qingying Wang, Xiangyu Wu, Zhenyu Mi, Guangyao Liu and Xiaohui Song EPL, 140 5 (2022) 56002 Published online: 01 December 2022 DOI: 10.1209/0295-5075/aca42d