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 language | English |
|---|---|
| Pages (from-to) | 7055-7057 |
| Number of pages | 3 |
| Journal | Journal of Applied Physics |
| Volume | 83 |
| Issue number | 11 |
| Publication status | Published - 1 Dec 1998 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
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 journal › Article
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TY - JOUR
T1 - Grain boundary effects on transport in metalorganic chemical vapor deposition-grown, Ca-doped lanthanum manganites
AU - Heremans, J. J.
AU - Watts, S.
AU - Wirth, S.
AU - Yu, X.
AU - Gillman, E. S.
AU - Dahmen, K. H.
AU - Von Molnár, S.
PY - 1998/12/1
Y1 - 1998/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0004412876&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0004412876&partnerID=8YFLogxK
M3 - Article
VL - 83
SP - 7055
EP - 7057
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 11
ER -