A 4K-400K Wide Operating-Temperature-Range MRAM Technology with Ultrathin Composite Free Layer and Magnesium Spacer. - Ming-Chun Hong; Yao-Jen Chang; Yu-Chen Hsin; Liang-Ming Liu; Kuan-Ming Chen; Yi-Hui Su; Guan-Long Chen; Shan-Yi Yang; I-Jung Wang; Sk. Ziaur Rahaman; Hsin-Han Lee; Shih-Ching Chiu; et al. (VLSI Technology and Circuits, 2022)