Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications
Polycrystalline of (La1-xNdx)0.5Ba0.5MnO3 with x = 0, 1/6, 1/3, ½, 2/3, 5/6 and 1 has been prepared using solid state reaction. The effect of substituting neodymium at Lasite on magnetoresistance (MR) effect has been investigated. The doped samples are calcined at 900oC for 12 hours, pelletized and...
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Universiti Putra Malaysia Press
2005
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my.upm.eprints.338652015-04-28T09:26:02Z http://psasir.upm.edu.my/id/eprint/33865/ Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications Abdullah, Huda Abdul Halim, Shaari Lim, Kean Pah Lee, O. J. Elias, Saion Ab. Aziz, Sidek Zainuddin, Hishamuddin Polycrystalline of (La1-xNdx)0.5Ba0.5MnO3 with x = 0, 1/6, 1/3, ½, 2/3, 5/6 and 1 has been prepared using solid state reaction. The effect of substituting neodymium at Lasite on magnetoresistance (MR) effect has been investigated. The doped samples are calcined at 900oC for 12 hours, pelletized and sintered at 1300oC for 24 hours. The magnetoresistance (MR) was measured at a magnetic field of H ≤ 1T at 90K, 100K, 150K, 200K, 250K, 270K and 300K. Overall, MR drops slowly when temperature rises. All doping concentration gives small variation range (~8.97% to ~63.49%). The highest MR value of 63.49 % was observed at 150K for sample of x = 1.0. The metal-insulator transition temperature, TP shifted towards lower temperatures as Nd doping increased, Tp followed by decreasing of the activation energy (Ea), which are 254, 244, 218, 198, 146, 130 and 114 K for the bulks with x = 0, 1/6, 1/3, ½, 2/3, 5/6 and 1, respectively. In the semi-conducting portion, activation energy (Ea) decreases as the doping concentration increases. Universiti Putra Malaysia Press 2005 Conference or Workshop Item NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/33865/1/33865.pdf Abdullah, Huda and Abdul Halim, Shaari and Lim, Kean Pah and Lee, O. J. and Elias, Saion and Ab. Aziz, Sidek and Zainuddin, Hishamuddin (2005) Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications. In: International Advanced Technology Congress: Conference on Advanced Materials (CAM 2005), 6 - 8 Dec. 2005, Putrajaya, Malaysia. (pp. 378-385). |
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Polycrystalline of (La1-xNdx)0.5Ba0.5MnO3 with x = 0, 1/6, 1/3, ½, 2/3, 5/6 and 1 has been prepared using solid state reaction. The effect of substituting neodymium at Lasite
on magnetoresistance (MR) effect has been investigated. The doped samples are calcined at 900oC for 12 hours, pelletized and sintered at 1300oC for 24 hours. The
magnetoresistance (MR) was measured at a magnetic field of H ≤ 1T at 90K, 100K, 150K, 200K, 250K, 270K and 300K. Overall, MR drops slowly when temperature rises. All doping concentration gives small variation range (~8.97% to ~63.49%). The highest MR value of 63.49 % was observed at 150K for sample of x = 1.0. The metal-insulator transition temperature, TP shifted towards lower temperatures as Nd
doping increased, Tp followed by decreasing of the activation energy (Ea), which are 254, 244, 218, 198, 146, 130 and 114 K for the bulks with x = 0, 1/6, 1/3, ½, 2/3, 5/6 and 1, respectively. In the semi-conducting portion, activation energy (Ea) decreases as the doping concentration increases. |
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Conference or Workshop Item |
author |
Abdullah, Huda Abdul Halim, Shaari Lim, Kean Pah Lee, O. J. Elias, Saion Ab. Aziz, Sidek Zainuddin, Hishamuddin |
spellingShingle |
Abdullah, Huda Abdul Halim, Shaari Lim, Kean Pah Lee, O. J. Elias, Saion Ab. Aziz, Sidek Zainuddin, Hishamuddin Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications |
author_facet |
Abdullah, Huda Abdul Halim, Shaari Lim, Kean Pah Lee, O. J. Elias, Saion Ab. Aziz, Sidek Zainuddin, Hishamuddin |
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Abdullah, Huda |
title |
Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications |
title_short |
Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications |
title_full |
Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications |
title_fullStr |
Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications |
title_full_unstemmed |
Electrical properties and magnetoresistance effect of Nd doped La0.5Ba0.5MnO3 manganites for low field applications |
title_sort |
electrical properties and magnetoresistance effect of nd doped la0.5ba0.5mno3 manganites for low field applications |
publisher |
Universiti Putra Malaysia Press |
publishDate |
2005 |
url |
http://psasir.upm.edu.my/id/eprint/33865/1/33865.pdf http://psasir.upm.edu.my/id/eprint/33865/ |
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1643830992347070464 |
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13.18916 |