Colossal magnetoresistance in epitaxial La{sub (1{minus}x{minus}y)}Na{sub y}MnO{sub 3} thin film
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)
- Department of Metallurgy, Indian Institute of Science, Bangalore 560012 (India)
- Department of Physics, Indian Institute of Science, Bangalore 560012 (India)
We have synthesized La{sub 0.83}Na{sub 0.11}MnO{sub 2.93} by heating La{sub 2}O{sub 3} and MnCO{sub 3} in NaCl melt at 900{degree}C. The exact composition was arrived by analyzing each ion by an independent chemical method. The compound crystallized in a rhombohedral structure and showed an insulator-to-metal transition at 290 K. Epitaxial thin films were fabricated on LaAlO{sub 3} (100) using a pulsed laser deposition technique. The film also showed an insulator-to-metal transition at 290 K. Magnetoresistance [{Delta}R/R{sub 0}=(R{sub H}{minus}R{sub 0})/R{sub 0}] was {minus}71{percent} near the insulator-to-metal transition temperature of 290 K at 6 T magnetic field. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 503577
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 21 Vol. 70; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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