Electrical and magnetic properties of La0.835Na0.165Mn0.9RE0.1O3 (RE Mg, Cr, Ti) films prepared by chemical solution deposition method

La0.835Na0.165Mn0.9RE0.1O3 (RE  Mg, Cr, Ti) films were prepared by chemical solution deposition method on LaAlO3 (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 Mn3+ ions by Mg2+ ions appears spin-glass cluster in the low temperature. Additionally, the sample La0.835Na0.165Mn0.9Mg0.1O3 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.