Influence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) Manganites
We have the measured electrical resistivity of La1-yBayMn1-xCuxO3 (0.17≤y≤0.30; 0.04≤x≤0.10), La1-ySryMn1-xCrxO3 and La1-ySryMn1-xCoxO3 (0.270≤y≤0.294; 0.02≤x≤0.10) polycrystalline samples in the 25-325 K temperature range. The increase of Mn site doping concentration leads to an increase of the ele...
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| Format: | Article |
| Language: | English |
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International Institute for the Science of Sintering, Beograd
2008-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2008/0350-820X0801055P.pdf |
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| author | Paunović N. Popović Z.V. Cantarero A. Sapina F. |
| author_facet | Paunović N. Popović Z.V. Cantarero A. Sapina F. |
| author_sort | Paunović N. |
| collection | DOAJ |
| description | We have the measured electrical resistivity of La1-yBayMn1-xCuxO3 (0.17≤y≤0.30; 0.04≤x≤0.10), La1-ySryMn1-xCrxO3 and La1-ySryMn1-xCoxO3 (0.270≤y≤0.294; 0.02≤x≤0.10) polycrystalline samples in the 25-325 K temperature range. The increase of Mn site doping concentration leads to an increase of the electrical resistivity of the samples and the appearance of a “double-peak” structure in the electrical resistivity versus temperature graphs. The first peak represents the insulator-metal transition in vicinity of the paramagnetic-ferromagnetic transition (TC). We have found that the intensity of the second peak increases with an increase of concentration of Mn substituents, due to the hole scattering by the random potential of the Mn site impurities. |
| first_indexed | 2024-12-12T04:56:55Z |
| format | Article |
| id | doaj.art-ca6c66ee548341e58aca95d07f8ae0ce |
| institution | Directory Open Access Journal |
| issn | 0350-820X |
| language | English |
| last_indexed | 2024-12-12T04:56:55Z |
| publishDate | 2008-01-01 |
| publisher | International Institute for the Science of Sintering, Beograd |
| record_format | Article |
| series | Science of Sintering |
| spelling | doaj.art-ca6c66ee548341e58aca95d07f8ae0ce2022-12-22T00:37:20ZengInternational Institute for the Science of Sintering, BeogradScience of Sintering0350-820X2008-01-01401556110.2298/SOS0801055PInfluence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) ManganitesPaunović N.Popović Z.V.Cantarero A.Sapina F.We have the measured electrical resistivity of La1-yBayMn1-xCuxO3 (0.17≤y≤0.30; 0.04≤x≤0.10), La1-ySryMn1-xCrxO3 and La1-ySryMn1-xCoxO3 (0.270≤y≤0.294; 0.02≤x≤0.10) polycrystalline samples in the 25-325 K temperature range. The increase of Mn site doping concentration leads to an increase of the electrical resistivity of the samples and the appearance of a “double-peak” structure in the electrical resistivity versus temperature graphs. The first peak represents the insulator-metal transition in vicinity of the paramagnetic-ferromagnetic transition (TC). We have found that the intensity of the second peak increases with an increase of concentration of Mn substituents, due to the hole scattering by the random potential of the Mn site impurities.http://www.doiserbia.nb.rs/img/doi/0350-820X/2008/0350-820X0801055P.pdfManganitescolossal magnetoresistanceelectrical resistivity |
| spellingShingle | Paunović N. Popović Z.V. Cantarero A. Sapina F. Influence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) Manganites Science of Sintering Manganites colossal magnetoresistance electrical resistivity |
| title | Influence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) Manganites |
| title_full | Influence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) Manganites |
| title_fullStr | Influence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) Manganites |
| title_full_unstemmed | Influence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) Manganites |
| title_short | Influence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) Manganites |
| title_sort | influence of mn site doping on electrical resistivity of polycrystalline la1 yaymn1 xbxo3 a ba sr b cu cr co manganites |
| topic | Manganites colossal magnetoresistance electrical resistivity |
| url | http://www.doiserbia.nb.rs/img/doi/0350-820X/2008/0350-820X0801055P.pdf |
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