Structural, electrical transport and magnetoresistive studies of pr and nd substituted on La 2/3Ba 1/3MnO 3 perovskite

Huda Abdullah, S. A. Halim, K. P. Lim, K. K. Kabashi, S. Elias, A. A. Sidek, Z. Hishamuddin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Colossal magnetoresistance (CMR), as the name implies, is the phenomenon of dramatic changes in resistance attendant upon application of a magnetic field. The typical CMR material is derived from perovskite manganites with the chemical formula Ln 1-xA xMnO 3, where Ln is the rare earth (Ln = La, Pr, Nd, Sm) and A is the divalent metal (A = Ca, Ba, Sr). The objective of this paper is to study the effects of the doping Nd and Pr at La site on La-Ba-Mn-O ceramics using solid state reaction. The characteristics and magnetotransport properties of CMR materials are investigated. Polycrystalline (La 1-x Pr x) 0.67Ba 0.33MnO 3 (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, 1) and (La 1-x Pr x) 0.67Ba 0.33MnO 3, (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, 1), are doped with Pr and Nd site based manganites, calcined at 900°C for 12 hours, pelletized and sintered at 1300°C for 24 hours have been synthesized and investigated. The magnetoresistance (MR) effects are measured using the four point probe technique. The magnetoresistance defined as MR% = (R o - R H)/R H × 100 was measured at a magnetic field of H ≤ 1T at room temperature. The MR values were increased from 7.9 - 12.7% and from 7.9 - 12.3% for doping with Nd (x=0.17) and Pr (x=0.33) respectively. The electrical property, T p was determined by using standard four-point probe resistivity measurement in a temperature range of 20 K to 300 K. The result shows that Pr and Nd dopants shift the value of T p to a lower temperature. In this paper the structural pattern and microstructure property of bulk samples have been investigated via XRD, AFM and SEM. XRD patterns show that these systems are in single phase with orthorhombic distorted perovskite structures. The rms roughness for the AFM images has obtained for undoped and doped samples. SEM micrographs have shown that undoped samples are observed to be more compact than the doped samples doped due to the existence of pores. The potential of this research is to produce magnetoresistive read head such as read/write heads in computer disc-drives, position sensor, magnetoresistive random access memory (MRAM), biomagnetic sensor and magnetic accelerometers.

Original languageEnglish
Title of host publicationProceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004
Pages375-382
Number of pages8
Volume1
Publication statusPublished - 2004
Externally publishedYes
EventProceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis - 2004 - Manchester
Duration: 19 Jul 200422 Jul 2004

Other

OtherProceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis - 2004
CityManchester
Period19/7/0422/7/04

Fingerprint

Colossal magnetoresistance
Magnetoresistance
Perovskite
Manganites
Doping (additives)
MRAM devices
Magnetic fields
Galvanomagnetic effects
Scanning electron microscopy
Sensors
Solid state reactions
Accelerometers
Temperature
Rare earths
Electric properties
Surface roughness
Microstructure
Metals

Keywords

  • Colossal Magnetoresistance
  • Perovskite

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Abdullah, H., Halim, S. A., Lim, K. P., Kabashi, K. K., Elias, S., Sidek, A. A., & Hishamuddin, Z. (2004). Structural, electrical transport and magnetoresistive studies of pr and nd substituted on La 2/3Ba 1/3MnO 3 perovskite. In Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004 (Vol. 1, pp. 375-382)

Structural, electrical transport and magnetoresistive studies of pr and nd substituted on La 2/3Ba 1/3MnO 3 perovskite. / Abdullah, Huda; Halim, S. A.; Lim, K. P.; Kabashi, K. K.; Elias, S.; Sidek, A. A.; Hishamuddin, Z.

Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004. Vol. 1 2004. p. 375-382.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abdullah, H, Halim, SA, Lim, KP, Kabashi, KK, Elias, S, Sidek, AA & Hishamuddin, Z 2004, Structural, electrical transport and magnetoresistive studies of pr and nd substituted on La 2/3Ba 1/3MnO 3 perovskite. in Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004. vol. 1, pp. 375-382, Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis - 2004, Manchester, 19/7/04.
Abdullah H, Halim SA, Lim KP, Kabashi KK, Elias S, Sidek AA et al. Structural, electrical transport and magnetoresistive studies of pr and nd substituted on La 2/3Ba 1/3MnO 3 perovskite. In Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004. Vol. 1. 2004. p. 375-382
Abdullah, Huda ; Halim, S. A. ; Lim, K. P. ; Kabashi, K. K. ; Elias, S. ; Sidek, A. A. ; Hishamuddin, Z. / Structural, electrical transport and magnetoresistive studies of pr and nd substituted on La 2/3Ba 1/3MnO 3 perovskite. Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004. Vol. 1 2004. pp. 375-382
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abstract = "Colossal magnetoresistance (CMR), as the name implies, is the phenomenon of dramatic changes in resistance attendant upon application of a magnetic field. The typical CMR material is derived from perovskite manganites with the chemical formula Ln 1-xA xMnO 3, where Ln is the rare earth (Ln = La, Pr, Nd, Sm) and A is the divalent metal (A = Ca, Ba, Sr). The objective of this paper is to study the effects of the doping Nd and Pr at La site on La-Ba-Mn-O ceramics using solid state reaction. The characteristics and magnetotransport properties of CMR materials are investigated. Polycrystalline (La 1-x Pr x) 0.67Ba 0.33MnO 3 (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, 1) and (La 1-x Pr x) 0.67Ba 0.33MnO 3, (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, 1), are doped with Pr and Nd site based manganites, calcined at 900°C for 12 hours, pelletized and sintered at 1300°C for 24 hours have been synthesized and investigated. The magnetoresistance (MR) effects are measured using the four point probe technique. The magnetoresistance defined as MR{\%} = (R o - R H)/R H × 100 was measured at a magnetic field of H ≤ 1T at room temperature. The MR values were increased from 7.9 - 12.7{\%} and from 7.9 - 12.3{\%} for doping with Nd (x=0.17) and Pr (x=0.33) respectively. The electrical property, T p was determined by using standard four-point probe resistivity measurement in a temperature range of 20 K to 300 K. The result shows that Pr and Nd dopants shift the value of T p to a lower temperature. In this paper the structural pattern and microstructure property of bulk samples have been investigated via XRD, AFM and SEM. XRD patterns show that these systems are in single phase with orthorhombic distorted perovskite structures. The rms roughness for the AFM images has obtained for undoped and doped samples. SEM micrographs have shown that undoped samples are observed to be more compact than the doped samples doped due to the existence of pores. The potential of this research is to produce magnetoresistive read head such as read/write heads in computer disc-drives, position sensor, magnetoresistive random access memory (MRAM), biomagnetic sensor and magnetic accelerometers.",
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AU - Abdullah, Huda

AU - Halim, S. A.

AU - Lim, K. P.

AU - Kabashi, K. K.

AU - Elias, S.

AU - Sidek, A. A.

AU - Hishamuddin, Z.

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N2 - Colossal magnetoresistance (CMR), as the name implies, is the phenomenon of dramatic changes in resistance attendant upon application of a magnetic field. The typical CMR material is derived from perovskite manganites with the chemical formula Ln 1-xA xMnO 3, where Ln is the rare earth (Ln = La, Pr, Nd, Sm) and A is the divalent metal (A = Ca, Ba, Sr). The objective of this paper is to study the effects of the doping Nd and Pr at La site on La-Ba-Mn-O ceramics using solid state reaction. The characteristics and magnetotransport properties of CMR materials are investigated. Polycrystalline (La 1-x Pr x) 0.67Ba 0.33MnO 3 (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, 1) and (La 1-x Pr x) 0.67Ba 0.33MnO 3, (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, 1), are doped with Pr and Nd site based manganites, calcined at 900°C for 12 hours, pelletized and sintered at 1300°C for 24 hours have been synthesized and investigated. The magnetoresistance (MR) effects are measured using the four point probe technique. The magnetoresistance defined as MR% = (R o - R H)/R H × 100 was measured at a magnetic field of H ≤ 1T at room temperature. The MR values were increased from 7.9 - 12.7% and from 7.9 - 12.3% for doping with Nd (x=0.17) and Pr (x=0.33) respectively. The electrical property, T p was determined by using standard four-point probe resistivity measurement in a temperature range of 20 K to 300 K. The result shows that Pr and Nd dopants shift the value of T p to a lower temperature. In this paper the structural pattern and microstructure property of bulk samples have been investigated via XRD, AFM and SEM. XRD patterns show that these systems are in single phase with orthorhombic distorted perovskite structures. The rms roughness for the AFM images has obtained for undoped and doped samples. SEM micrographs have shown that undoped samples are observed to be more compact than the doped samples doped due to the existence of pores. The potential of this research is to produce magnetoresistive read head such as read/write heads in computer disc-drives, position sensor, magnetoresistive random access memory (MRAM), biomagnetic sensor and magnetic accelerometers.

AB - Colossal magnetoresistance (CMR), as the name implies, is the phenomenon of dramatic changes in resistance attendant upon application of a magnetic field. The typical CMR material is derived from perovskite manganites with the chemical formula Ln 1-xA xMnO 3, where Ln is the rare earth (Ln = La, Pr, Nd, Sm) and A is the divalent metal (A = Ca, Ba, Sr). The objective of this paper is to study the effects of the doping Nd and Pr at La site on La-Ba-Mn-O ceramics using solid state reaction. The characteristics and magnetotransport properties of CMR materials are investigated. Polycrystalline (La 1-x Pr x) 0.67Ba 0.33MnO 3 (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, 1) and (La 1-x Pr x) 0.67Ba 0.33MnO 3, (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, 1), are doped with Pr and Nd site based manganites, calcined at 900°C for 12 hours, pelletized and sintered at 1300°C for 24 hours have been synthesized and investigated. The magnetoresistance (MR) effects are measured using the four point probe technique. The magnetoresistance defined as MR% = (R o - R H)/R H × 100 was measured at a magnetic field of H ≤ 1T at room temperature. The MR values were increased from 7.9 - 12.7% and from 7.9 - 12.3% for doping with Nd (x=0.17) and Pr (x=0.33) respectively. The electrical property, T p was determined by using standard four-point probe resistivity measurement in a temperature range of 20 K to 300 K. The result shows that Pr and Nd dopants shift the value of T p to a lower temperature. In this paper the structural pattern and microstructure property of bulk samples have been investigated via XRD, AFM and SEM. XRD patterns show that these systems are in single phase with orthorhombic distorted perovskite structures. The rms roughness for the AFM images has obtained for undoped and doped samples. SEM micrographs have shown that undoped samples are observed to be more compact than the doped samples doped due to the existence of pores. The potential of this research is to produce magnetoresistive read head such as read/write heads in computer disc-drives, position sensor, magnetoresistive random access memory (MRAM), biomagnetic sensor and magnetic accelerometers.

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