Growth and investigation of La1-xRxMnO3(R- Ba, Ca, Ce) thin films

Abstract

Thin La1ixRxMnO3 (R n Ba, Ca, Ce) lms (d = 40n400 nm) were grown on single crystal NdGaO3 (100), SrTiO3 (100), LaAlO3 (100), and MgO substrates using magnetron sputtering and pulsed laser deposition techniques. X-ray diffraction patterns (XRD) revealed high crystalline quality of the La2=3Ca1=3MnO3 and La2=3Ba1=3MnO3 lms grown on lattice-matched SrTiO3, LaAlO3, and NdGaO3. Meanwhile, weak ree xes in £n2£ scans demonstrating traces of CeO2 impurities have been indicated for the La2=3Ce1=3MnO3 lms. Series of post-deposition annealing experiments demonstrated a crucial role of annealing temperature and ambience on both electrical and magnetic properties of the La2=3Ce1=3MnO3 lms.