Investigation of doping and particle size effect on structural, magnetic and magnetoresistance properties of manganites
In this paper after introduction of manganites, we have studied the effect of particle size and doping on structural, magnetic and magnetoresistance of LSMO manganite samples. The magnetoresistance measurements show that, by decreasing the particle size LFMR increases. Also the results show that the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2008-06-01
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| Series: | Iranian Journal of Physics Research |
| Subjects: | |
| Online Access: | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-271&slc_lang=en&sid=1 |
| _version_ | 1818050877679730688 |
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| author | M. Hakimi P. Kameli H. Salamati M. Eshraghi A. Aezami |
| author_facet | M. Hakimi P. Kameli H. Salamati M. Eshraghi A. Aezami |
| author_sort | M. Hakimi |
| collection | DOAJ |
| description | In this paper after introduction of manganites, we have studied the effect of particle size and doping on structural, magnetic and magnetoresistance of LSMO manganite samples. The magnetoresistance measurements show that, by decreasing the particle size LFMR increases. Also the results show that the LFMR increases at low doping levels and decreases at high doping levels. The spin dependent tunneling and scattering at the grain boundaries is the origin of increasing the LFMR at low doping levels. Also the substitution of impurity ions at Mn sites and subsequently weaking of double exchange is responsible for decreasing of LFMR at high doping level. |
| first_indexed | 2024-12-10T11:00:27Z |
| format | Article |
| id | doaj.art-4203dc7dd6ea4296a7e3cde381f8266a |
| institution | Directory Open Access Journal |
| issn | 1682-6957 |
| language | English |
| last_indexed | 2024-12-10T11:00:27Z |
| publishDate | 2008-06-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Iranian Journal of Physics Research |
| spelling | doaj.art-4203dc7dd6ea4296a7e3cde381f8266a2022-12-22T01:51:43ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572008-06-01827998Investigation of doping and particle size effect on structural, magnetic and magnetoresistance properties of manganitesM. HakimiP. KameliH. SalamatiM. EshraghiA. AezamiIn this paper after introduction of manganites, we have studied the effect of particle size and doping on structural, magnetic and magnetoresistance of LSMO manganite samples. The magnetoresistance measurements show that, by decreasing the particle size LFMR increases. Also the results show that the LFMR increases at low doping levels and decreases at high doping levels. The spin dependent tunneling and scattering at the grain boundaries is the origin of increasing the LFMR at low doping levels. Also the substitution of impurity ions at Mn sites and subsequently weaking of double exchange is responsible for decreasing of LFMR at high doping level.http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-271&slc_lang=en&sid=1magnetoresistancemanganitesLSMO |
| spellingShingle | M. Hakimi P. Kameli H. Salamati M. Eshraghi A. Aezami Investigation of doping and particle size effect on structural, magnetic and magnetoresistance properties of manganites Iranian Journal of Physics Research magnetoresistance manganites LSMO |
| title | Investigation of doping and particle size effect on structural, magnetic and magnetoresistance properties of manganites |
| title_full | Investigation of doping and particle size effect on structural, magnetic and magnetoresistance properties of manganites |
| title_fullStr | Investigation of doping and particle size effect on structural, magnetic and magnetoresistance properties of manganites |
| title_full_unstemmed | Investigation of doping and particle size effect on structural, magnetic and magnetoresistance properties of manganites |
| title_short | Investigation of doping and particle size effect on structural, magnetic and magnetoresistance properties of manganites |
| title_sort | investigation of doping and particle size effect on structural magnetic and magnetoresistance properties of manganites |
| topic | magnetoresistance manganites LSMO |
| url | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-271&slc_lang=en&sid=1 |
| work_keys_str_mv | AT mhakimi investigationofdopingandparticlesizeeffectonstructuralmagneticandmagnetoresistancepropertiesofmanganites AT pkameli investigationofdopingandparticlesizeeffectonstructuralmagneticandmagnetoresistancepropertiesofmanganites AT hsalamati investigationofdopingandparticlesizeeffectonstructuralmagneticandmagnetoresistancepropertiesofmanganites AT meshraghi investigationofdopingandparticlesizeeffectonstructuralmagneticandmagnetoresistancepropertiesofmanganites AT aaezami investigationofdopingandparticlesizeeffectonstructuralmagneticandmagnetoresistancepropertiesofmanganites |