La(0.835)Na(0.165)Mn(0.9)RE(0.1)O(3) (RE=Mg, Cr, Ti) films were prepared by chemical solution deposition method on LaAlO(3) (100) substrates. All the as-grown thin films are highly (h00) oriented with pseudocubic structure. There is a transition from the paramagnetic to ferromagnetic state in all the samples, but the substitution of Mn(3+) ions by Mg(2+) ions appears spin-glass cluster in the low temperature. Additionally, the sample La(0.835)Na(0.165)Mn(0.9)RE(0.1)O(3) has the lowest Curie temperature and the metal-insulating transition temperature, and the resistivity is the highest. The resistivity curve exhibits insulating behavior in the temperature range of 100-390 K. The results are discussed in terms of the blocking of the percolative channel and the electric and magnetic disorder because of the substitution of a nonmagnetic ion. (c) 2008 Elsevier B.V. All rights reserved.