Strain-induced large low-field magnetoresistance in Pr0.67Sr0.33MnO3 ultrathin films
- 19 October 1998
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (16) , 2360-2362
- https://doi.org/10.1063/1.122461
Abstract
We report magnetoresistance(MR)measurements in very thin Pr 0.67 Sr 0.33 MnO 3 films (5–15 nm) grown on LaAlO 3 (001) substrates. The films are under compressive strain imposed by the lattice mismatch with the substrate. The MR ratio [R(H)−R 0 ]/R 0 is ∼92% at H=800 Oe and T=70 K when the magnetic field is applied perpendicular to the film plane and is much smaller when the magnetic field is parallel to the film plane. We suggest that the large low-field MR is due to strain-induced magnetic anisotropy and spin-dependent scattering at domain boundaries.Keywords
This publication has 14 references indexed in Scilit:
- The role of strain in magnetic anisotropy of manganite thin filmsApplied Physics Letters, 1997
- Large low-field magnetoresistance in La0.7Ca0.3MnO3 induced by artificial grain boundariesNature, 1997
- Grain-boundary effects on the magnetoresistance properties of perovskite manganite filmsPhysical Review B, 1996
- Large magnetotunneling effect at low magnetic fields in micrometer-scale epitaxial Mn tunnel junctionsPhysical Review B, 1996
- Spin-Polarized Intergrain Tunneling inPhysical Review Letters, 1996
- Giant Magnetoresistive Effects in a Single Element Magnetic Thin FilmPhysical Review Letters, 1996
- Giant magnetoresistive memory effect in Nd0.7Sr0.3MnOz filmsApplied Physics Letters, 1995
- Thousandfold Change in Resistivity in Magnetoresistive La-Ca-Mn-O FilmsScience, 1994
- Giant negative magnetoresistance in perovskitelike ferromagnetic filmsPhysical Review Letters, 1993
- Theory of the perpendicular magnetoresistance in magnetic multilayersPhysical Review B, 1993