Investigations on structure, magnetic and magnetocaloric of La0.8Sr0.2Mn1−xNixO3(x = 0.05, 0.10, and 0.15) at room temperatureZhuojia Xie, Xinyu Jiang and Zhengguang ZouEur. Phys. J. Plus, 137 12 (2022) 1350DOI: https://doi.org/10.1140/epjp/s13360-022-03566-x