Abstract
The significant influences of substituting low concentration Dy at La- site for La 0.667Sr 0.333MnO 3 perovskites compounds in structural, electrical and magnetoresistance properties have been studied. The polycrystalline samples (La 1-xDy x) 0.667Sr 0.333MnO 3 with x= 0.00, 0.02 and 0.10 were synthesized via conventional solid-state reaction in bulk. This work measured their resistivity properties with (below 1 Tesla) and without the presence of magnetic field (0 Tesla) as a function of temperature, microstructure and particle distribution and structural distortion using four point probe resistivity technique, X- ray diffractometer (XRD) and Atomic Force Microscope (AFM). The resistivity in applied magnetic field or so-called magnetoresistance ratio is defined as MR% = (Ro - R H)/RH × 100 was measured at 90K, 100K, 150K, 200K, 250K, 270K and 300K. The highest MR% values for x=0.00, 0.02 and 0.10 are 15.3%, 15.5% and 20.6% at 1 Tesla respectively. The metal- insulator transition temperature, T MIT correspond to >300K, 298K and 230K of sample with x= 0.00, 0.02 and 0.10 respectively were observed from resistivity-temperature (R-T) curve.
| Original language | English |
|---|---|
| Title of host publication | Materials Science Forum |
| Pages | 93-96 |
| Number of pages | 4 |
| Volume | 517 |
| DOIs | |
| Publication status | Published - 2006 |
| Externally published | Yes |
| Event | International Conference on Functional Materials and Devices, ICFMD-2005 - Kuala Lumpur Duration: 6 Jun 2005 → 8 Jun 2005 |
Publication series
| Name | Materials Science Forum |
|---|---|
| Volume | 517 |
| ISSN (Print) | 02555476 |
Other
| Other | International Conference on Functional Materials and Devices, ICFMD-2005 |
|---|---|
| City | Kuala Lumpur |
| Period | 6/6/05 → 8/6/05 |
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Keywords
- Colossal magnetoresistance
- Perovskites
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Structural, electrical properties and magnetoresistive effect in the (La 1-xDy x) 0.67Sr 0.33MnO 3 compound. / Lee, O. J.; Halim, S. A.; Lim, K. P.; Talib, Z. A.; Abdullah, Huda; Priscilla, I.
Materials Science Forum. Vol. 517 2006. p. 93-96 (Materials Science Forum; Vol. 517).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Structural, electrical properties and magnetoresistive effect in the (La 1-xDy x) 0.67Sr 0.33MnO 3 compound
AU - Lee, O. J.
AU - Halim, S. A.
AU - Lim, K. P.
AU - Talib, Z. A.
AU - Abdullah, Huda
AU - Priscilla, I.
PY - 2006
Y1 - 2006
N2 - The significant influences of substituting low concentration Dy at La- site for La 0.667Sr 0.333MnO 3 perovskites compounds in structural, electrical and magnetoresistance properties have been studied. The polycrystalline samples (La 1-xDy x) 0.667Sr 0.333MnO 3 with x= 0.00, 0.02 and 0.10 were synthesized via conventional solid-state reaction in bulk. This work measured their resistivity properties with (below 1 Tesla) and without the presence of magnetic field (0 Tesla) as a function of temperature, microstructure and particle distribution and structural distortion using four point probe resistivity technique, X- ray diffractometer (XRD) and Atomic Force Microscope (AFM). The resistivity in applied magnetic field or so-called magnetoresistance ratio is defined as MR% = (Ro - R H)/RH × 100 was measured at 90K, 100K, 150K, 200K, 250K, 270K and 300K. The highest MR% values for x=0.00, 0.02 and 0.10 are 15.3%, 15.5% and 20.6% at 1 Tesla respectively. The metal- insulator transition temperature, T MIT correspond to >300K, 298K and 230K of sample with x= 0.00, 0.02 and 0.10 respectively were observed from resistivity-temperature (R-T) curve.
AB - The significant influences of substituting low concentration Dy at La- site for La 0.667Sr 0.333MnO 3 perovskites compounds in structural, electrical and magnetoresistance properties have been studied. The polycrystalline samples (La 1-xDy x) 0.667Sr 0.333MnO 3 with x= 0.00, 0.02 and 0.10 were synthesized via conventional solid-state reaction in bulk. This work measured their resistivity properties with (below 1 Tesla) and without the presence of magnetic field (0 Tesla) as a function of temperature, microstructure and particle distribution and structural distortion using four point probe resistivity technique, X- ray diffractometer (XRD) and Atomic Force Microscope (AFM). The resistivity in applied magnetic field or so-called magnetoresistance ratio is defined as MR% = (Ro - R H)/RH × 100 was measured at 90K, 100K, 150K, 200K, 250K, 270K and 300K. The highest MR% values for x=0.00, 0.02 and 0.10 are 15.3%, 15.5% and 20.6% at 1 Tesla respectively. The metal- insulator transition temperature, T MIT correspond to >300K, 298K and 230K of sample with x= 0.00, 0.02 and 0.10 respectively were observed from resistivity-temperature (R-T) curve.
KW - Colossal magnetoresistance
KW - Perovskites
UR - http://www.scopus.com/inward/record.url?scp=35748948962&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35748948962&partnerID=8YFLogxK
U2 - 10.4028/0-87849-404-9.93
DO - 10.4028/0-87849-404-9.93
M3 - Conference contribution
SN - 0878494049
SN - 9780878494040
VL - 517
T3 - Materials Science Forum
SP - 93
EP - 96
BT - Materials Science Forum
ER -