We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Combined Strain and High-Pressure Oxygen Treatment Effects and Phase Separation in La[sub 0.67]Ca[sub 0.33]MnO[sub 3] Thin Films.
- Authors
Nossov, A.; Strobel, P.
- Abstract
Evidence for phase separation in high-pressure oxygen-treated La[sub 0.67]Ca[sub 0.33]MnO[sub 3]/(100)MgO thin films is presented. This phase-separated state is not observed for the x = 0.33 classical doping level either for bulk material or for as-prepared thin films. It originates from the combined influence of two factors: large strains due to the film–substrate lattice mismatch and high-pressure (100 bar) annealing in oxygen. These factors weaken double exchange, drastically enhance low-field magnetoresistance, and lead to hysteresis phenomena. The experimental results are interpreted in terms of phase separation of the film volume into the ferromagnetic conductive matrix with inclusions of spin-glass-like clusters. © 2001 MAIK “Nauka / Interperiodica”.
- Subjects
THIN films; OXYGEN; HIGH pressure chemistry
- Publication
JETP Letters, 2001, Vol 74, Issue 6, p340
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1421412