A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium
In this work we report on the magnetocaloric effect of La2/3Ca1/3MnO3 (LCMO) and La2/3Ca1/3Mn0.94Cr0.06O3 (LCMCrO) manganite thin films grown by DC magnetron sputtering on LaAlO3 (100) substrates. X-ray diffraction shows that both doped and undoped films crystallize in the orthorhombic structure. Ma...
- Autores:
- Tipo de recurso:
- Fecha de publicación:
- 2019
- Institución:
- Universidad de Medellín
- Repositorio:
- Repositorio UDEM
- Idioma:
- eng
- OAI Identifier:
- oai:repository.udem.edu.co:11407/5754
- Acceso en línea:
- http://hdl.handle.net/11407/5754
- Palabra clave:
- Aluminum compounds
Chromium
Circular dichroism spectroscopy
Dichroism
Engineering research
Entropy
Lanthanum compounds
Magnetic materials
Magnetocaloric effects
Manganites
Saturation magnetization
X ray absorption spectroscopy
Antiferromagnetic coupling
Dc magnetron sputtering
Magnetic interactions
Manganite thin films
Orthorhombic structures
Paramagnetic transition
Refrigeration cooling
X-ray magnetic circular dichroism
Thin films
- Rights
- License
- http://purl.org/coar/access_right/c_16ec
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| dc.title.none.fl_str_mv |
A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium |
| title |
A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium |
| spellingShingle |
A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium Aluminum compounds Chromium Circular dichroism spectroscopy Dichroism Engineering research Entropy Lanthanum compounds Magnetic materials Magnetocaloric effects Manganites Saturation magnetization X ray absorption spectroscopy Antiferromagnetic coupling Dc magnetron sputtering Magnetic interactions Manganite thin films Orthorhombic structures Paramagnetic transition Refrigeration cooling X-ray magnetic circular dichroism Thin films |
| title_short |
A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium |
| title_full |
A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium |
| title_fullStr |
A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium |
| title_full_unstemmed |
A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium |
| title_sort |
A brief discussion of the magnetocaloric effect in thin films of manganite doped with chromium |
| dc.subject.none.fl_str_mv |
Aluminum compounds Chromium Circular dichroism spectroscopy Dichroism Engineering research Entropy Lanthanum compounds Magnetic materials Magnetocaloric effects Manganites Saturation magnetization X ray absorption spectroscopy Antiferromagnetic coupling Dc magnetron sputtering Magnetic interactions Manganite thin films Orthorhombic structures Paramagnetic transition Refrigeration cooling X-ray magnetic circular dichroism Thin films |
| topic |
Aluminum compounds Chromium Circular dichroism spectroscopy Dichroism Engineering research Entropy Lanthanum compounds Magnetic materials Magnetocaloric effects Manganites Saturation magnetization X ray absorption spectroscopy Antiferromagnetic coupling Dc magnetron sputtering Magnetic interactions Manganite thin films Orthorhombic structures Paramagnetic transition Refrigeration cooling X-ray magnetic circular dichroism Thin films |
| description |
In this work we report on the magnetocaloric effect of La2/3Ca1/3MnO3 (LCMO) and La2/3Ca1/3Mn0.94Cr0.06O3 (LCMCrO) manganite thin films grown by DC magnetron sputtering on LaAlO3 (100) substrates. X-ray diffraction shows that both doped and undoped films crystallize in the orthorhombic structure. Magnetic measurements show a decrease in both the Curie temperature, TC , and the saturation magnetization, MS , for the LCMCrO sample. The change in the magnetic entropy (?Sm ) was extracted from hysteresis loops at different temperatures around the ferromagnetic to paramagnetic transition, displaying a maximum of entropy change (?Sm ) max near TC in both films. Moreover, a shift in (?Sm ) max toward temperatures above TC with increasing magnetic field and a broadening of the entropy change curve were observed. Results of refrigeration cooling power show a lower efficiency for LCMCrO. In order to obtain a local insight into the magnetic interactions of these films, measurements of X-ray absorption spectroscopy and X-ray magnetic circular dichroism (XMCD) were performed. XMCD suggests that an antiferromagnetic coupling between Mn4+ - Mn3+ is favored with Cr3+ incorporation, which reduces the Mn L 2,3 XMCD signal and results in a decrease of MS and (?Sm ) max in LCMCrO films. © Published under licence by IOP Publishing Ltd. |
| publishDate |
2019 |
| dc.date.accessioned.none.fl_str_mv |
2020-04-29T14:53:53Z |
| dc.date.available.none.fl_str_mv |
2020-04-29T14:53:53Z |
| dc.date.none.fl_str_mv |
2019 |
| dc.type.eng.fl_str_mv |
Conference Paper |
| dc.type.coarversion.fl_str_mv |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.coar.fl_str_mv |
http://purl.org/coar/resource_type/c_2df8fbb1 |
| dc.type.driver.none.fl_str_mv |
info:eu-repo/semantics/article |
| dc.identifier.issn.none.fl_str_mv |
17426588 |
| dc.identifier.uri.none.fl_str_mv |
http://hdl.handle.net/11407/5754 |
| dc.identifier.doi.none.fl_str_mv |
10.1088/1742-6596/1247/1/012013 |
| identifier_str_mv |
17426588 10.1088/1742-6596/1247/1/012013 |
| url |
http://hdl.handle.net/11407/5754 |
| dc.language.iso.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.isversionof.none.fl_str_mv |
https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85072152021&doi=10.1088%2f1742-6596%2f1247%2f1%2f012013&partnerID=40&md5=9108c1600e516277d7fabeead69f327d |
| dc.relation.citationvolume.none.fl_str_mv |
1247 |
| dc.relation.citationissue.none.fl_str_mv |
1 |
| dc.relation.references.none.fl_str_mv |
Pecharsky, V.K., Gschneidner, K.A., Tsokol, A.O., (2005) Rep. Prog. Phys., 68 (6), p. 1479 Taoreed, O., (2016) AIP Advances, 6 (10) Tishin, A.M., Spichkin, Y.I., (2003) The Magnetocaloric Effect and Its Applications, , (Bristol and Philadelphia: IOP Publishing Ltd) Moya, X., Nature Mat., 12, pp. 52-58 Dagotto, E., (2000) Colossal Magnetoresistive Oxides, , ed Y. Tokura (New York: Gordon and Breach Sciences Publishers) Zener, C., (1951) Phys. Rev., 81 (3), p. 440 Barnabe, A., (1997) Appl. Phys. Lett., 71 (26), p. 3907 Vanitha, (1998) J. Solid State Chem., 137 (2), p. 365 Arnache, O., Giratá, D., Hoffmann, A., (2008) Phys. Rev. B, 77 (21) Marzouki-Ajmi, A., J. Magn. Magn. Mater., 433, pp. 209-215 Shang, C., (2016) Physica B, 502, p. 39 Abdessalem, D., Sobhi, H., Aref, O., Lamjed, B., (2016) J. Alloy. Compd., 687, p. 521 Terashita, H., (2012) Phys. Rev. B, 85 (10) Figueroa, A.I., (2015) Superlattices Microstruct., 87, p. 42 Grebennikov Vladimir, I., (2017) J. Magn. Magn. Mater., 440, p. 79 Rivadulla, F., (2000) Phys. Rev. B, 62 (9), p. 5678 |
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http://purl.org/coar/access_right/c_16ec |
| rights_invalid_str_mv |
http://purl.org/coar/access_right/c_16ec |
| dc.publisher.none.fl_str_mv |
Institute of Physics Publishing |
| dc.publisher.program.none.fl_str_mv |
Facultad de Ciencias Básicas |
| dc.publisher.faculty.none.fl_str_mv |
Facultad de Ciencias Básicas |
| publisher.none.fl_str_mv |
Institute of Physics Publishing |
| dc.source.none.fl_str_mv |
Journal of Physics: Conference Series |
| institution |
Universidad de Medellín |
| repository.name.fl_str_mv |
Repositorio Institucional Universidad de Medellin |
| repository.mail.fl_str_mv |
repositorio@udem.edu.co |
| _version_ |
1808481179088715776 |
| spelling |
20192020-04-29T14:53:53Z2020-04-29T14:53:53Z17426588http://hdl.handle.net/11407/575410.1088/1742-6596/1247/1/012013In this work we report on the magnetocaloric effect of La2/3Ca1/3MnO3 (LCMO) and La2/3Ca1/3Mn0.94Cr0.06O3 (LCMCrO) manganite thin films grown by DC magnetron sputtering on LaAlO3 (100) substrates. X-ray diffraction shows that both doped and undoped films crystallize in the orthorhombic structure. Magnetic measurements show a decrease in both the Curie temperature, TC , and the saturation magnetization, MS , for the LCMCrO sample. The change in the magnetic entropy (?Sm ) was extracted from hysteresis loops at different temperatures around the ferromagnetic to paramagnetic transition, displaying a maximum of entropy change (?Sm ) max near TC in both films. Moreover, a shift in (?Sm ) max toward temperatures above TC with increasing magnetic field and a broadening of the entropy change curve were observed. Results of refrigeration cooling power show a lower efficiency for LCMCrO. In order to obtain a local insight into the magnetic interactions of these films, measurements of X-ray absorption spectroscopy and X-ray magnetic circular dichroism (XMCD) were performed. XMCD suggests that an antiferromagnetic coupling between Mn4+ - Mn3+ is favored with Cr3+ incorporation, which reduces the Mn L 2,3 XMCD signal and results in a decrease of MS and (?Sm ) max in LCMCrO films. © Published under licence by IOP Publishing Ltd.engInstitute of Physics PublishingFacultad de Ciencias BásicasFacultad de Ciencias Básicashttps://www2.scopus.com/inward/record.uri?eid=2-s2.0-85072152021&doi=10.1088%2f1742-6596%2f1247%2f1%2f012013&partnerID=40&md5=9108c1600e516277d7fabeead69f327d12471Pecharsky, V.K., Gschneidner, K.A., Tsokol, A.O., (2005) Rep. Prog. Phys., 68 (6), p. 1479Taoreed, O., (2016) AIP Advances, 6 (10)Tishin, A.M., Spichkin, Y.I., (2003) The Magnetocaloric Effect and Its Applications, , (Bristol and Philadelphia: IOP Publishing Ltd)Moya, X., Nature Mat., 12, pp. 52-58Dagotto, E., (2000) Colossal Magnetoresistive Oxides, , ed Y. Tokura (New York: Gordon and Breach Sciences Publishers)Zener, C., (1951) Phys. Rev., 81 (3), p. 440Barnabe, A., (1997) Appl. Phys. Lett., 71 (26), p. 3907Vanitha, (1998) J. Solid State Chem., 137 (2), p. 365Arnache, O., Giratá, D., Hoffmann, A., (2008) Phys. Rev. B, 77 (21)Marzouki-Ajmi, A., J. Magn. Magn. Mater., 433, pp. 209-215Shang, C., (2016) Physica B, 502, p. 39Abdessalem, D., Sobhi, H., Aref, O., Lamjed, B., (2016) J. Alloy. Compd., 687, p. 521Terashita, H., (2012) Phys. Rev. B, 85 (10)Figueroa, A.I., (2015) Superlattices Microstruct., 87, p. 42Grebennikov Vladimir, I., (2017) J. Magn. Magn. Mater., 440, p. 79Rivadulla, F., (2000) Phys. Rev. B, 62 (9), p. 5678Journal of Physics: Conference SeriesAluminum compoundsChromiumCircular dichroism spectroscopyDichroismEngineering researchEntropyLanthanum compoundsMagnetic materialsMagnetocaloric effectsManganitesSaturation magnetizationX ray absorption spectroscopyAntiferromagnetic couplingDc magnetron sputteringMagnetic interactionsManganite thin filmsOrthorhombic structuresParamagnetic transitionRefrigeration coolingX-ray magnetic circular dichroismThin filmsA brief discussion of the magnetocaloric effect in thin films of manganite doped with chromiumConference Paperinfo:eu-repo/semantics/articlehttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_2df8fbb1Campillo, G., Facultad de Ciencias Básicas, Universidad de Medellin, Medellin, Colombia; Figueroa, A.I., Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB Bellaterra, Barcelona, 08193, Spain; Arnache, O., Grupo de Estado Sólido, Instituto de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Medellin, 52-21, Colombia; Osorio, J., Grupo de Estado Sólido, Instituto de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Medellin, 52-21, Colombia; Marin Ramirez, J.M., Grupo de Estado Sólido, Instituto de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Medellin, 52-21, Colombia; Fallarino, L., Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, Dresden, 01328, Germanyhttp://purl.org/coar/access_right/c_16ecCampillo G.Figueroa A.I.Arnache O.Osorio J.Marin Ramirez J.M.Fallarino L.11407/5754oai:repository.udem.edu.co:11407/57542020-05-27 18:32:37.482Repositorio Institucional Universidad de Medellinrepositorio@udem.edu.co |