“铁磁性”的英语？

严格区别铁磁性与顺磁性物质有时是很困难的.It is sometimes difficult to draw the line separating ferromagnetic from paramagnetic substances.是否能制造出室温下的铁磁性半导体?Can we make semiconductors that are ferromagnetic at room temperature?应力对铁磁性钢材磁感应频谱的影...