Title :
Substrate and oxygen-annealing effects on the pulsed-laser-deposited La0.5Ca0.5Mn1-xMxO3(M=Fe,Ni) thin films
Author :
Hsu, L.-S. ; Liu, C.-J. ; Wu, T.-W. ; Luca, D.
Author_Institution :
Dept. of Phys., Nat. Chang-Hua Univ. of Educ., Taiwan
Abstract :
Perovskite manganite thin films of La0.5Ca0.5MnO3 doped with 5% Fe or Ni were grown on SrTiO3, LaAlO3, NdGaO3, and Si single-crystal substrates by pulsed-laser deposition (PLD). The as-deposited films were amorphous and epitaxial layers were obtained only after ex-situ post-annealing at 900°C under 1 atmosphere of oxygen. The effects of different substrates and oxygen-annealing conditions on these films correlate with their structural, magnetoresistance, and electronic properties.
Keywords :
annealing; calcium compounds; iron; lanthanum compounds; magnetic epitaxial layers; magnetic thin films; magnetoresistance; neodymium compounds; nickel; optical materials; oxygen; pulsed laser deposition; strontium compounds; La0.5Ca0.5Mn1-xFexO3; La0.5Ca0.5Mn1-xNixO3; LaAlO3; NdGaO3; Si; Si single-crystal substrate; SrTiO3; amorphous layer; electronic property; epitaxial layer; ex-situ post-annealing; magnetoresistance; oxygen-annealing condition; oxygen-annealing effect; perovskite magnetic thin film; pulsed-laser-deposition; Annealing; Colossal magnetoresistance; Magnetic fields; Magnetic films; Magnetic materials; Optical films; Substrates; Temperature; Transistors; X-ray scattering;
Conference_Titel :
Lasers and Electro-Optics, 2003. CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on
Print_ISBN :
0-7803-7766-4
DOI :
10.1109/CLEOPR.2003.1274757
