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DC Field | Value | Language |
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dc.citation.startPage | 171330 | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 964 | - |
dc.contributor.author | Gamzatov, A. G. | - |
dc.contributor.author | Batdalov, A. B. | - |
dc.contributor.author | Abdulkadirova, N. Z. | - |
dc.contributor.author | Aliev, A. M. | - |
dc.contributor.author | Khovaylo, V. V. | - |
dc.contributor.author | Thanh, T. D. | - |
dc.contributor.author | Dung, N. T. | - |
dc.contributor.author | Yu, S. -C. | - |
dc.date.accessioned | 2023-12-21T11:41:45Z | - |
dc.date.available | 2023-12-21T11:41:45Z | - |
dc.date.created | 2023-09-07 | - |
dc.date.issued | 2023-11 | - |
dc.description.abstract | The paper presents the results of a study of magnetization, specific heat (CP), thermal diffusivity (1), thermal conductivity (x) and direct measurements magnetocaloric effect of polycrystalline samples Pr0.7Sr0.3_xBaxMnO3 (x = 0-0.3). An increase in the Ba concentration leads to a decrease in the Curie temperature (TC), an increase in the disorder parameter (02) and a noticeable increase in thermal conductivity of the ferromagnetic phase (FM). The & kappa;(T) data near Tc revealed small minima and a sharp jump-like change in thermal conductivity upon transition to the FM phase. These results suggest that the anomalies in the temperature dependences of & eta;(T) and & kappa;(T) are associated with the scattering of thermal phonons both from distortions of the crystal lattice and from spin fluctuations. The giant change of & eta; (& UDelta;& eta;/& eta; -67%) and & kappa; (& UDelta;& kappa;/& kappa; -33%) was found in a magnetic field of 1.8 T for the x = 0 (Pr0.7Sr0.3MnO3) sample. The maximum values of & UDelta;T, & UDelta;S and relative cooling power (RCP), observed for this sample in a field of 1.8 T, are equal to 1.81 K, 3.38 J/kg K and 74.02 J/kg, respectively. In the studied Pr0.7Sr0.3_ xBaxMnO3 samples, the specific cooling power value at f = 0.2 Hz is 0.35, 0.29, 0.21, and 0.11 W/g for x = 0, 0.1, 0.2, and 0.3 sample, respectively. | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.964, pp.171330 | - |
dc.identifier.doi | 10.1016/j.jallcom.2023.171330 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.scopusid | 2-s2.0-85166302249 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/65407 | - |
dc.identifier.wosid | 001050052200001 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Giant magnetothermal anomalies and direct measurements of the magnetocaloric effect in Pr0.7Sr0.3_xBaxMnO3 manganites | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering | - |
dc.relation.journalResearchArea | Chemistry; Materials Science; Metallurgy & Metallurgical Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Manganite | - |
dc.subject.keywordAuthor | Specific heat | - |
dc.subject.keywordAuthor | Thermal diffusivity | - |
dc.subject.keywordAuthor | Thermal conductivity | - |
dc.subject.keywordAuthor | Magnetocaloric effect | - |
dc.subject.keywordPlus | THERMAL-CONDUCTIVITY | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordPlus | HEAT | - |
dc.subject.keywordPlus | DIFFUSIVITY | - |
dc.subject.keywordPlus | DISTORTIONS | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | SCATTERING | - |
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