Copper oxide selenite

Copper oxide selenite is an inorganic compound with the chemical formula Cu2OSeO3.

[1] Cu2OSeO3 polycrystals can be grown by heating a 2:1 molar mixture of CuO and SeO2 powders at 600 °C for 12 hours in vacuum.

The helical spin and skyrmion textures emerge at low magnetic fields due to the Dzyaloshinskii-Moriya interaction.

[1] Cu2OSeO3 is a ferrimagnet, and all its properties below the Curie temperature strongly depend on magnetic field.

This property is advantageous for high-frequency electronic applications, as it results in low current-induced heat.

Magnetic phase diagram of Cu 2 OSeO 3 for H ∥ [111] crystal axis. H, C, FP and SL stand for helical , conical, field-polarized (ferrimagnetic or paramagnetic) and skyrmion lattice phases, respectively.