Magnetic Properties of Dilute Alloys: Equations for Magnetization and   its Structural Fluctuations
  The dilute Heisenberg ferromagnet is studied taking into account fluctuations of magnetization caused by disorder. A self-consistent system of equations for magnetization and its mean quadratic fluctuations is derived within the configurationally averaged two-time temperature Green's function method. This system of equations is analised at low concentration of non-magnetic impurities. Mean relative quadratic fluctuations of magnetization are revealed to be proportional to the square of concentration of impurities. 
I. Vakarchuk, V. Tkachuk, T. Kuliy (The Ivan Franko State University   of Lviv, Ukraine)