Phase Diagram of a Diluted Triangular Lattice Ising Antiferromagnet in a   Field
  Magnetization processes and phase transitions in a geometrically frustrated triangular lattice Ising antiferromagnet in the presence of an external magnetic field and a random site dilution are studied by the use of an effective-field theory with correlations. We find that the interplay between the applied field and the frustration-relieving dilution results in peculiar phase diagrams in the temperature-field-dilution parameter space. 
M. \v{Z}ukovi\v{c}, M. Borovsk\'y and A. Bob\'ak
cond-mat.stat-mech