Improvement of magnetic hardness at finite temperatures: ab initio   disordered local moment approach for YCo$_5$
  Temperature dependence of the magnetocrystalline anisotropy energy and magnetization of the prototypical rare-earth magnet YCo$_5$ is calculated from first principles, utilizing the relativistic disordered local moment approach. We discuss a strategy to enhance the finite-temperature anisotropy field by hole doping, paving the way for an improvement of the coercivity near room temperature or higher. 
Munehisa Matsumoto, Rudra Banerjee, Julie B. Staunton
cond-mat.mtrl-sci