To measure full three-dimensional spin wave of BiFeO3 single crystal

Of all multiferroic materials, BiFeO3 stands out particularly with its both magnetic and ferroelectric transition temperatures above room temperatures, and more interestingly...在所有多铁性材料(multiferroic materials)中，铁酸铋(BiFeO3)尤为突出，其磁相变温度与铁电相变温度均高于室温，而更引人关注的是……