Variable temperature MFM/EFM study of Pr-doped LCMO film

Summary form only given. The ferromagnetic perovskite manganites have tendencies towards phase separation into ferromagnetic-metallic and charge-ordered-insulating domains up to microns in size. We show that both ferromagnetic and charge-ordered domain structures can be detected by magnetic force microscopy (MFM) and electric force microscopy (EFM) operated at low temperatures below the Curie temperature (T/sub c/). The samples are 800 /spl Aring/ thick films of (La/sub 1-x/Pr/sub x/)/sub 0.67/Ca/sub 0.33/MnO/sub 3/ on LaAlO/sub 3/ [100] or SrTiO/sub 3/ [100] substrate with x=0.3-0.4 prepared using pulsed laser deposition. We will elaborate the microscopic electric and magnetic behaviors near the transition temperature and their relations to the macroscopic film character such as magnetization and resistivity.