A narrative review: The electromagnetic field arrangement and the “braking” effect of electromagnetic brake (EMBr) technique in slab continuous castingZhuang Li, Lintao Zhang, Danzhu Ma, Nicholas P. Lavery and Engang WangMetall. Res. Technol., 118 2 (2021) 218DOI: https://doi.org/10.1051/metal/2021016