def __init__(self, fe_num):
     base_materials = [mg_perovskite, fe_perovskite]
     molar_fraction = [1. - fe_num, 0.0 + fe_num]
     HelperSolidSolution.__init__(self, base_materials, molar_fraction)
 def __init__(self, fe_num):
     endmembers = [mg_perovskite, fe_perovskite]
     molar_fractions = [1. - fe_num, 0.0 + fe_num]
     HelperSolidSolution.__init__(self, endmembers, molar_fractions)
 def __init__(self, fe_num):
     base_materials = [periclase, wustite]
     molar_fraction = [1. - fe_num, 0.0 + fe_num]
     HelperSolidSolution.__init__(self, base_materials, molar_fraction)
 def __init__(self, fe_num):
     endmembers = [periclase, wustite]
     molar_fractions = [1. - fe_num, 0.0 + fe_num]
     HelperSolidSolution.__init__(self, endmembers, molar_fractions)