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DC Field | Value | Language |
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dc.citation.endPage | 874 | - |
dc.citation.startPage | 865 | - |
dc.citation.title | JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | - |
dc.citation.volume | 35 | - |
dc.contributor.author | Ho, T. A. | - |
dc.contributor.author | Thang, P. D. | - |
dc.contributor.author | Thanh, T. D. | - |
dc.contributor.author | Putri, W. B. K. | - |
dc.contributor.author | Ho, T. O. | - |
dc.contributor.author | Yu, S. C. | - |
dc.date.accessioned | 2023-12-21T14:36:55Z | - |
dc.date.available | 2023-12-21T14:36:55Z | - |
dc.date.created | 2022-02-14 | - |
dc.date.issued | 2022-03 | - |
dc.description.abstract | We investigate the structural characterization, electronic structure, magnetic, and magnetocaloric properties of polycrystal-line La0.7Ca0.3Mn0.9Cu0.1O3 fabricated by a solid-state reaction method. XRD analysis indicates the orthorhombic single phase of the sample. The X-ray absorption fine structure spectra of Mn K-edge prove that the valence state of Mn ions is in mixed states of Mn3+ and Mn4+. The inverse of magnetic susceptibility chi(-1) as a function of temperature indicates coexistence of ferromagnetic, anti-ferromagnetic, and paramagnetic phase above Curie temperature T-C. Based on M(H) isotherms, the temperature dependences of magnetic entropy change (Delta S-m) under different magnetic field changes (Delta H=0-50 kOe) have been estimated. For Delta H= 50 kOe, the maximum value of Delta S-m (vertical bar Delta S-max vertical bar) is found to be about 2.0 J kg(-1) K-1, corresponding to the relative cooling power (RCP) of 240 J/kg. Interestingly, the H/M versus M-2 curves at temperature around T-C exhibit a positive slope under applied fields below 20 kOe, whereas they exhibit a negative slope at higher applied fields 20 kOe. Additionally, all Delta S-m (T) data under Delta H=0-15 kOe collapse into a universal curve of normalized entropy change (Delta S-m/Delta S-max) versus resealed temperature (theta), with theta=(T - T-C)/(T-r - T-C) and T-r is the reference temperature. In contrast, Delta S-m (T) data under Delta H= 20-50 kOe do not obey the universal curve of Delta S-m/Delta S-max. versus theta. These behaviors suggest a coexistence of the first- and second-order magnetic phase transition in La0.7Ca0.3Mn0.9Cu0.1O3 compound. | - |
dc.identifier.bibliographicCitation | JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, v.35, pp.865 - 874 | - |
dc.identifier.doi | 10.1007/s10948-021-06125-0 | - |
dc.identifier.issn | 1557-1939 | - |
dc.identifier.scopusid | 2-s2.0-85123693348 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/59048 | - |
dc.identifier.url | https://link.springer.com/article/10.1007/s10948-021-06125-0 | - |
dc.identifier.wosid | 000749113000001 | - |
dc.language | 영어 | - |
dc.publisher | SPRINGER | - |
dc.title | Electronic Structure, Griffiths Phase, and Magnetocaloric Effect in La0.7Ca0.3Mn1-xCuxO3 (x=0.1) showing first- and second-order characters | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Physics | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Magnetocaloric effect | - |
dc.subject.keywordAuthor | Magnetic properties | - |
dc.subject.keywordAuthor | Perovskite manganites | - |
dc.subject.keywordAuthor | Magnetic phase transformation | - |
dc.subject.keywordPlus | CRITICAL-BEHAVIOR | - |
dc.subject.keywordPlus | MAGNETOTRANSPORT PROPERTIES | - |
dc.subject.keywordPlus | MAGNETIC-PROPERTIES | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | ORDER | - |
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