Physics – Condensed Matter – Materials Science
Scientific paper
2000-06-13
Physics
Condensed Matter
Materials Science
11 pages, 4 figures
Scientific paper
10.1063/1.1372369
Thin films of Pr0.7Ca 0.3MnO3, Nd-0.5Ca0.5MnO3 and Nd0.5Sr0.5MnO3 have been fabricated. by pulse laser deposition. Magnetic and electrical transport properties of these films were compared with their bulk solids. All the films grow in (101) direction on LaAlO3(100). Electrical transport measurements carried out with and without magnetic field has shown dr/dT<0 in these thin films. Application of magnetic field has shown dilution of the insulating behavior. The magnetization studies of Nd-0.5Sr0.5MnO3 exhibited ferromagnetic behavior at 260K and showed antiferomagnetic feature below 130K. This is close to the bulk magnetic behavior of Nd-0.5Sr0.5MnO3. Pr0.7Ca0.3MnO3 showed ferromagnetic transition below 130K and becomes antiferromagnetic at 90K. Nd-0.5Ca0.5MnO3 showed paramagnetic behavior down to low temperatures. Deviation in the properties of the thin films from the bulk solids is attributed to the growth of the films in more symmetric structure.
Das Indrajit
Hegde M. S.
Rawat Rahul
Venimadhav Adyam
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