Abstract
Ceramic composites of (La0.7Pb0.3MnO 3)1-xAgx and (La0.7Pb 0.3MnO3)1-x(Fe2O3) x are prepared by using chemical and solid-sate sintering route. The structural and magnetotransport properties are studied for these composites. Ferromagnetism is gradually suppressed with the increase of Ag or Fe 2O3 mole percentage for both systems. The resistivity decreases significantly for (La0.7Pb0.3MnO 3)1-xAgx while resistivity increases dramatically for (La0.7Pb0.3MnO3) 1-x(Fe2O3)x. It is suggested that the introduction of Ag into the niche of grain boundaries forms artificial conducting network and improve the carriers to transport. Contrarily, the Fe2O3 in (La0.7Pb0.3MnO 3)1-x(Fe2O3)x composite acts as a separation layer between two grains and forms the artificial tunneling junction. However, the enhancement of magnetoresistance has been observed for both systems.
| Original language | English |
|---|---|
| Pages (from-to) | 1682-1686 |
| Number of pages | 5 |
| Journal | Materials Letters |
| Volume | 60 |
| Issue number | 13-14 |
| DOIs | |
| Publication status | Published - 2006 Jun 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Comparison of the magnetotransport properties between (La 0.7Pb0.3MnO3)1-xAgx and (La0.7Pb0.3MnO3)1-x(Fe 2O3)x composites. / Young, S. L.; Lin, C. C.; Shi, J. B.; Chen, H. Z.; Horng, L.
In: Materials Letters, Vol. 60, No. 13-14, 01.06.2006, p. 1682-1686.Research output: Contribution to journal › Article
TY - JOUR
T1 - Comparison of the magnetotransport properties between (La 0.7Pb0.3MnO3)1-xAgx and (La0.7Pb0.3MnO3)1-x(Fe 2O3)x composites
AU - Young, S. L.
AU - Lin, C. C.
AU - Shi, J. B.
AU - Chen, H. Z.
AU - Horng, L.
PY - 2006/6/1
Y1 - 2006/6/1
N2 - Ceramic composites of (La0.7Pb0.3MnO 3)1-xAgx and (La0.7Pb 0.3MnO3)1-x(Fe2O3) x are prepared by using chemical and solid-sate sintering route. The structural and magnetotransport properties are studied for these composites. Ferromagnetism is gradually suppressed with the increase of Ag or Fe 2O3 mole percentage for both systems. The resistivity decreases significantly for (La0.7Pb0.3MnO 3)1-xAgx while resistivity increases dramatically for (La0.7Pb0.3MnO3) 1-x(Fe2O3)x. It is suggested that the introduction of Ag into the niche of grain boundaries forms artificial conducting network and improve the carriers to transport. Contrarily, the Fe2O3 in (La0.7Pb0.3MnO 3)1-x(Fe2O3)x composite acts as a separation layer between two grains and forms the artificial tunneling junction. However, the enhancement of magnetoresistance has been observed for both systems.
AB - Ceramic composites of (La0.7Pb0.3MnO 3)1-xAgx and (La0.7Pb 0.3MnO3)1-x(Fe2O3) x are prepared by using chemical and solid-sate sintering route. The structural and magnetotransport properties are studied for these composites. Ferromagnetism is gradually suppressed with the increase of Ag or Fe 2O3 mole percentage for both systems. The resistivity decreases significantly for (La0.7Pb0.3MnO 3)1-xAgx while resistivity increases dramatically for (La0.7Pb0.3MnO3) 1-x(Fe2O3)x. It is suggested that the introduction of Ag into the niche of grain boundaries forms artificial conducting network and improve the carriers to transport. Contrarily, the Fe2O3 in (La0.7Pb0.3MnO 3)1-x(Fe2O3)x composite acts as a separation layer between two grains and forms the artificial tunneling junction. However, the enhancement of magnetoresistance has been observed for both systems.
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UR - http://www.scopus.com/inward/citedby.url?scp=33645136979&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2005.11.091
DO - 10.1016/j.matlet.2005.11.091
M3 - Article
AN - SCOPUS:33645136979
VL - 60
SP - 1682
EP - 1686
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
IS - 13-14
ER -