The development of next-generation spintronic devices relies in a large part on engineering subtle magnetic phase transitions which control the formation of long-wavelength spin textures. Topologically non-trivial spin textures such as skyrmion lattices are of interest for high-density, energy-efficient non-volatile magnetic memory schemes.

Here we demonstrate the utility of the magnetoentropic mapping method in combination with computational models to rapidly identify magnetic textures such as cycloids and skyrmions in uniaxial systems. We obtain excellent agreement with previously reported magnetic phase diagrams in GaV₄S₈ and GaV₄Se₈. A low temperature, high entropy signature is identified in GaV₄Se₈ concurrent with unidentified phase regions.

These results demonstrate that magnetoentropicmapping informed by computational models of entropic susceptibility can provide a rapid, unambiguous measurement of cycloid/skyrmion phase boundaries in model uniaxial systems and thereby facilitate the rapid characterization of similar skyrmion phase diagrams.