Effect of sintering temperature and oxygen atmosphere on electrocaloric effect of BaTiO3 ceramicsXue-Chong Ren, Wei-Li Nie, Yang Bai and Li-Jie QiaoEur. Phys. J. B, 88 9 (2015) 232DOI: https://doi.org/10.1140/epjb/e2015-60445-2