Abstract
We have performed magnetic and transport measurements on La0.67Ca0.33MnO3 polycrystalline and partially melted samples. The magnetization and resistance decrease as sintering temperature is increased. The insulator-to-metal transition temperature is remarkably enhanced in the partially melted sample, enabling its possible applications at room temperature. The microscopic studies in melt samples show an excellent connectivity between grains, suggesting the enhancement of percolative transport by opening new conduction channels and the disappearance of magnetic phase boundary at elevated temperature by the ordering of Mn spins blocked at the grain boundary of sintered samples.
| Original language | English |
|---|---|
| Pages (from-to) | 763-765 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 76 |
| Issue number | 6 |
| Publication status | Published - 2000 Feb 7 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Enhanced room-temperature magnetoresistance in partially melted La0.67Ca0.33MnO3 manganites. / Pradhan, A. K.; Roul, B. K.; Wen, J. G.; Ren, Z. F.; Miryala, Muralidhar; Dutta, P.; Sahu, D. R.; Mohanty, S.; Patro, P. K.
In: Applied Physics Letters, Vol. 76, No. 6, 07.02.2000, p. 763-765.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhanced room-temperature magnetoresistance in partially melted La0.67Ca0.33MnO3 manganites
AU - Pradhan, A. K.
AU - Roul, B. K.
AU - Wen, J. G.
AU - Ren, Z. F.
AU - Miryala, Muralidhar
AU - Dutta, P.
AU - Sahu, D. R.
AU - Mohanty, S.
AU - Patro, P. K.
PY - 2000/2/7
Y1 - 2000/2/7
N2 - We have performed magnetic and transport measurements on La0.67Ca0.33MnO3 polycrystalline and partially melted samples. The magnetization and resistance decrease as sintering temperature is increased. The insulator-to-metal transition temperature is remarkably enhanced in the partially melted sample, enabling its possible applications at room temperature. The microscopic studies in melt samples show an excellent connectivity between grains, suggesting the enhancement of percolative transport by opening new conduction channels and the disappearance of magnetic phase boundary at elevated temperature by the ordering of Mn spins blocked at the grain boundary of sintered samples.
AB - We have performed magnetic and transport measurements on La0.67Ca0.33MnO3 polycrystalline and partially melted samples. The magnetization and resistance decrease as sintering temperature is increased. The insulator-to-metal transition temperature is remarkably enhanced in the partially melted sample, enabling its possible applications at room temperature. The microscopic studies in melt samples show an excellent connectivity between grains, suggesting the enhancement of percolative transport by opening new conduction channels and the disappearance of magnetic phase boundary at elevated temperature by the ordering of Mn spins blocked at the grain boundary of sintered samples.
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UR - http://www.scopus.com/inward/citedby.url?scp=0000427540&partnerID=8YFLogxK
M3 - Article
VL - 76
SP - 763
EP - 765
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 6
ER -