This review presents experimental realization and behaviour of the ferromagnetic nematic phase, which is observed in different suspensions of magnetic nanoplatelets. After a general introduction, the challenges in the synthesis of magnetic nanoplatelets and preparation of the nematic suspensions are discussed. A brief explanation of a simple macroscopic theory, which can be used to understand the main features of the ferromagnetic phase, follows. In the main part, four different ferromagnetic nematic systems are presented: (i) ferromagnetic suspensions of the platelets in nematic liquid crystals, (ii) dense suspensions in an isotropic solvent – ferromagnetic ferrofluids, (iii) biaxial ferromagnetic nematic suspensions, and (iv) chiral ferromagnetic suspensions. The main focus is on the formation of the ferromagnetic phases and the growth of the magnetic domains. At the end, dynamics of ferromagnetic liquid crystals and methods for their observation are briefly discussed.

这项审查介绍了铁磁性向列相的实验实现和行为，这是在磁性纳米血小板的不同悬浮液中观察到的。一般介绍后，讨论了磁性纳米血小板的合成和向列悬浮液的制备中的挑战。下面是对简单的宏观理论的简要解释，该理论可用于理解铁磁相的主要特征。主要部分介绍了四种不同的铁磁向列体系：（i）血小板在向列液晶中的铁磁悬浮液，（ii）在各向同性溶剂中的致密悬浮液–铁磁铁磁流体，（iii）双轴铁磁向列悬浮液，以及（iv ）手性铁磁悬浮液。主要重点是铁磁相的形成和磁畴的增长。最后，简要讨论了铁磁液晶的动力学及其观察方法。