FeGe is extensively studied for its unusual magnetic properties.
Electron spins in this material show dissimilar, yet regular spatial arrangements at different values of applied magnetic field.
Those arrangements are named helical, skyrmion lattice, and conical.
They can be controlled not only by temperature and magnetic field, but also by electric current, and the current density required for manipulating skyrmions (~10⁶ A/m²) is approximately one million times smaller than that needed for moving magnetic domains in traditional ferromagnets.
As a result, skyrmions have potential application in ultrahigh-density magnetic storage devices.

The helical, conical and skyrmion structures are not unique to FeGe; they are also found in MnSi, MnGe and similar compounds, but contrary to those materials, the observation of magnetic ordering patterns in FeGe does not require cryogenic cooling.
The disadvantage of FeGe over MnSi is its polymorphism, which hinders the growth of large homogeneous crystals.
FeGe is extensively studied for its unusual magnetic properties. Electron spins in this material show dissimilar, yet regular spatial arrangements at different values of applied magnetic field. Those arrangements are named helical, skyrmion lattice, and conical. They can be controlled not only by temperature and magnetic field, but also by electric current, and the current density required for manipulating skyrmions (~10⁶ A/m²) is approximately one million times smaller than that needed for moving magnetic domains in traditional ferromagnets. As a result, skyrmions have potential application in ultrahigh-density magnetic storage devices. 
The helical, conical and skyrmion structures are not unique to FeGe; they are also found in MnSi, MnGe and similar compounds, but contrary to those materials, the observation of magnetic ordering patterns in FeGe does not require cryogenic cooling. The disadvantage of FeGe over MnSi is its polymorphism, which hinders the growth of large homogeneous crystals.
Iron germanide