Grain boundary effects on transport in metalorganic chemical vapor deposition-grown, Ca-doped lanthanum manganites

J. J. Heremans, S. Watts, S. Wirth, X. Yu, E. S. Gillman, K. H. Dahmen, S. Von Molnár

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The transport properties of metalorganic chemical vapor deposited films of lanthanum manganite grown on various substrates are investigated. The more disordered films show a magnetoresistance that is both large and relatively temperature independent over a wide temperature range. At low magnetic fields, a linear field dependence is observed and is attributed to spin-polarized intergrain tunneling. In addition, at low fields a hysteretic dependence of resistivity on the magnetic field has been observed. This effect has been attributed to the scattering of spin-polarized carriers at the grain boundary.

Original languageEnglish
Pages (from-to)7055-7057
Number of pages3
JournalJournal of Applied Physics
Volume83
Issue number11
Publication statusPublished - 1 Dec 1998
Externally publishedYes

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lanthanum
metalorganic chemical vapor deposition
grain boundaries
magnetic fields
transport properties
vapors
electrical resistivity
temperature
scattering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Heremans, J. J., Watts, S., Wirth, S., Yu, X., Gillman, E. S., Dahmen, K. H., & Von Molnár, S. (1998). Grain boundary effects on transport in metalorganic chemical vapor deposition-grown, Ca-doped lanthanum manganites. Journal of Applied Physics, 83(11), 7055-7057.

Grain boundary effects on transport in metalorganic chemical vapor deposition-grown, Ca-doped lanthanum manganites. / Heremans, J. J.; Watts, S.; Wirth, S.; Yu, X.; Gillman, E. S.; Dahmen, K. H.; Von Molnár, S.

In: Journal of Applied Physics, Vol. 83, No. 11, 01.12.1998, p. 7055-7057.

Research output: Contribution to journalArticle

Heremans, JJ, Watts, S, Wirth, S, Yu, X, Gillman, ES, Dahmen, KH & Von Molnár, S 1998, 'Grain boundary effects on transport in metalorganic chemical vapor deposition-grown, Ca-doped lanthanum manganites', Journal of Applied Physics, vol. 83, no. 11, pp. 7055-7057.
Heremans JJ, Watts S, Wirth S, Yu X, Gillman ES, Dahmen KH et al. Grain boundary effects on transport in metalorganic chemical vapor deposition-grown, Ca-doped lanthanum manganites. Journal of Applied Physics. 1998 Dec 1;83(11):7055-7057.
Heremans, J. J. ; Watts, S. ; Wirth, S. ; Yu, X. ; Gillman, E. S. ; Dahmen, K. H. ; Von Molnár, S. / Grain boundary effects on transport in metalorganic chemical vapor deposition-grown, Ca-doped lanthanum manganites. In: Journal of Applied Physics. 1998 ; Vol. 83, No. 11. pp. 7055-7057.
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