Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 15 April 1994:
Vol. 264. no. 5157, pp. 413 - 415
DOI: 10.1126/science.264.5157.413
Prev | Table of Contents | Next

Articles

Thousandfold Change in Resistivity in Magnetoresistive La-Ca-Mn-O Films

S. Jin 1, T. H. Tiefel 1, M. McCormack 1, R. A. Fastnacht 1, R. Ramesh 2, and L. H. Chen 3

1 AT&T Bell Laboratories, Murray Hill, NJ 07974, USA.
2 Bellcore, Red Bank, NJ 07701, USA.
3 Kaohsiung Polytechnique Institute, Ta-Hsu Hsiang, Taiwan

A negative isotropic magnetoresistance effect more than three orders of magnitude larger than the typical giant magnetoresistance of some superlattice films has been observed in thin oxide films of perovskite-like La0.67Ca0.33MnOx. Epitaxial films that are grown on LaAIO3 substrates by laser ablation and suitably heat treated exhibit magnetoresistance values as high as 127,000 percent near 77 kelvin and sim1300 percent near room temperature. Such a phenomenon could be useful for various magnetic and electric device applications if the observed effects of material processing are optimized. Possible mechanisms for the observed effect are discussed.

Submitted on December 16, 1993
Accepted on February 18, 1994


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Direct Observation of Percolation in a Manganite Thin Film.
L. Zhang, C. Israel, A. Biswas, R. L. Greene, and A. de Lozanne (2002)
Science 298, 805-807
   Abstract »    Full Text »    PDF »
A Class of Cobalt Oxide Magnetoresistance Materials Discovered with Combinatorial Synthesis.
G. Briceņo, H. Chang, X. Sun, P. G. Schultz, and X.-D. Xiang (1995)
Science 270, 273-275
   Abstract »    PDF »
A Combinatorial Approach to Materials Discovery.
X. -D. Xiang, X. Sun, G. Briceno, Y. Lou, K.-A. Wang, H. Chang, W. G. Wallace-Freedman, S.-W. Chen, and P. G. Schultz (1995)
Science 268, 1738-1740
   Abstract »    PDF »


ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)