Electrical properties of La{sub 0.7{minus}x}Pr{sub x}Sr{sub 0.3}MnO{sub 3} perovskite
- National Laboratory of Solid State Microstructures
We present the electrical properties of polycrystalline La{sub 0.7{minus}x}Pr{sub x}Sr{sub 0.3}MnO{sub 3} in which the average ionic radius of the A site {l_angle}r{sub A}{r_angle} is systematically varied while keeping the carrier concentration fixed. Below the Curie temperature T{sub c}, the spin-disorder scattering process has been regarded to play an important role in the resistivity. With decreasing {l_angle}r{sub A}{r_angle}, the structure transition from rhombohedral to orthorhombic phase accompanied with the sharp increase in resistivity at T{sub c} and the increase of the activation energies has been observed. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 534425
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 14 Vol. 70; ISSN 0003-6951; ISSN APPLAB
- Country of Publication:
- United States
- Language:
- English
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