Enhanced room-temperature magnetoresistance in partially melted La0.67Ca0.33MnO3 manganites

A. K. Pradhan, B. K. Roul, J. G. Wen, Z. F. Ren, Muralidhar Miryala, P. Dutta, D. R. Sahu, S. Mohanty, P. K. Patro

研究成果: Article

34 引用 (Scopus)

抄録

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.

元の言語English
ページ(範囲)763-765
ページ数3
ジャーナルApplied Physics Letters
76
発行部数6
出版物ステータスPublished - 2000 2 7
外部発表Yes

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room temperature
magnetic measurement
sintering
grain boundaries
transition temperature
insulators
conduction
magnetization
temperature
augmentation
metals

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

これを引用

Pradhan, A. K., Roul, B. K., Wen, J. G., Ren, Z. F., Miryala, M., Dutta, P., ... Patro, P. K. (2000). Enhanced room-temperature magnetoresistance in partially melted La0.67Ca0.33MnO3 manganites. Applied Physics Letters, 76(6), 763-765.

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.

:: Applied Physics Letters, 巻 76, 番号 6, 07.02.2000, p. 763-765.

研究成果: Article

Pradhan, AK, Roul, BK, Wen, JG, Ren, ZF, Miryala, M, Dutta, P, Sahu, DR, Mohanty, S & Patro, PK 2000, 'Enhanced room-temperature magnetoresistance in partially melted La0.67Ca0.33MnO3 manganites', Applied Physics Letters, 巻. 76, 番号 6, pp. 763-765.
Pradhan, A. K. ; Roul, B. K. ; Wen, J. G. ; Ren, Z. F. ; Miryala, Muralidhar ; Dutta, P. ; Sahu, D. R. ; Mohanty, S. ; Patro, P. K. / Enhanced room-temperature magnetoresistance in partially melted La0.67Ca0.33MnO3 manganites. :: Applied Physics Letters. 2000 ; 巻 76, 番号 6. pp. 763-765.
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AU - Ren, Z. F.

AU - Miryala, Muralidhar

AU - Dutta, P.

AU - Sahu, D. R.

AU - Mohanty, S.

AU - Patro, P. K.

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