Growth and characterization of La1 − xAxMnO3 (A = Ag and K, x = 0.33) epitaxial and polycrystalline manganite thin films derived by sol-gel dip-coating technique

► Sol-gel derived epitaxial and polycrystalline La0.67Ag0.33MnO3 and La0.67K0.33MnO3 films. ► The polycrystalline thin films show a spin-glass behavior at low temperatures. ► Abrupt rise of magnetization of polycrystalline films at around 50 K. ► Polycrystalline films have higher magnetoresistance than epitaxial films.