skip to main content

Title: Highly orientated growth and characterization of La{sub 0.7}Sr{sub 0.3}MnO{sub 3} thin films with different orientations on SrTiO{sub 3} substrates by chemical solution deposition method

La{sub 0.7}Sr{sub 0.3}MnO{sub 3} (LSMO) thin films were successfully prepared on (100), (110), and (111) oriented SrTiO{sub 3} substrates by chemical solution deposition method. The structural, magnetic, and magnetotransport properties were systematically studied. X-ray diffraction θ-2θ and ϕ-scan measurements results show that all the films have perfect crystalline orientation and in-plane alignment. Both the Curie temperature and metal-insulator transition temperature are almost the same for all the three orientations, about 339 K. The magnetoresistance value (MR value, defined as (R{sub M} − R{sub 0})/R{sub 0} × 100%, where R{sub M} and R{sub 0} are the resistivity with and without applied magnetic field) for the films reaches maximum near the Curie temperature. Both the magnetization and MR value for (100) direction LSMO are the largest, and meanwhile for (111) direction are the smallest. The saturation magnetization decreases approximately proportional to T{sup 2} at low temperature (T < T{sub c}/2) for all the oriented film. Inversely, the resistivity increases proportional to T{sup 2} in the same temperature range, which can be attributed to the electron-electron scattering.
Authors:
; ; ; ; ; ;  [1] ; ; ;  [2]
  1. Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Rd., Shanghai 200241 (China)
  2. Key Laboratory of Inorganic Function Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Rd., Shanghai 200050 (China)
Publication Date:
OSTI Identifier:
22410121
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; APPROXIMATIONS; CRYSTAL GROWTH; CRYSTAL STRUCTURE; CURIE POINT; DEPOSITION; LANTHANUM COMPOUNDS; MAGNETIC FIELDS; MAGNETIZATION; MAGNETORESISTANCE; MANGANATES; PHASE TRANSFORMATIONS; STRONTIUM TITANATES; SUBSTRATES; TEMPERATURE DEPENDENCE; THIN FILMS; X-RAY DIFFRACTION