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...

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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
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id REPOUDEM2_7320648a95b28eb148215190a54ad58c
oai_identifier_str oai:repository.udem.edu.co:11407/5754
network_acronym_str REPOUDEM2
network_name_str Repositorio UDEM
repository_id_str
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
dc.rights.coar.fl_str_mv 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_ 1814159226429243392
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