Effect of Sn on formation and transformation of VO2 phase Hao-nan Dong, De-li Shang, Yan-qing Lu, Yu-tong Li, Fa-yu Wu and Jun-wei Zhang Eur. Phys. J. Appl. Phys., 98 (2023) 19 Published online: 29 March 2023 DOI: 10.1051/epjap/2023220267