Comment on "Origin of Surface Canting within $\mathrm{Fe}_3\mathrm{O}_4$   Nanoparticles"
  We comment on the Letter "Origin of surface canting within $\mathrm{Fe}_3\mathrm{O}_4$ nanoparticles" by K.L. Krycka et al. [Phys. Rev. Lett. $\bf 113$, 147203 (2014)]. 
Andreas Michels, Dirk Honecker, Sergey Erokhin, and Dmitry Berkov
cond-mat.mes-hall