Gao Rong-Zhen, Wang Jing, Wang Jun-Sheng, Huang Hou-Bing. Investigation into electrocaloric effect of different types of ferroelectric materials by Landau-Devonshire theoryJ. Acta Physica Sinica, 2020, 69(21): 217801. DOI: 10.7498/aps.69.20201195