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
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Rd., Shanghai 200241 (China)
- Key Laboratory of Inorganic Function Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Rd., Shanghai 200050 (China)
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.
- OSTI ID:
- 22410121
- Journal Information:
- Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Magnetotransport properties of c-axis oriented La{sub 0.7}Sr{sub 0.3}MnO{sub 3} thin films on MgO-buffered SiO{sub 2}/Si substrates
In-plane grain boundary effects on the transport properties of La{sub 0.7}Sr{sub 0.3}MnO{sub 3{minus}{delta}} thin films
Related Subjects
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