Magnetic properties and magnetocaloric effect of NdMn2−xCuxSi2 compounds

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dc.contributor.authorDin, MFMen_AU
dc.contributor.authorWang, JLen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorGu, QFen_AU
dc.contributor.authorZeng, Ren_AU
dc.contributor.authorCampbell, SJen_AU
dc.contributor.authorKennedy, SJen_AU
dc.contributor.authorDou, SXen_AU
dc.date.accessioned2016-10-05T22:59:34Zen_AU
dc.date.available2016-10-05T22:59:34Zen_AU
dc.date.issued2014-02-19en_AU
dc.date.statistics2016-10-06en_AU
dc.description.abstractStructural and magnetic properties of NdMn2−x Cu xSi2 compounds (x = 0–1.0) have been investigated by high intensity x-ray and resolution neutron diffraction (3–450 K), specific heat, dc magnetization, and differential scanning calorimetry measurements. Substitution of Cu for Mn leads to an increase in the lattice parameter a but a decrease in c at room temperature. Two magnetic phase transitions have been found for NdMn2−x Cu xSi2 compounds with TN for the antiferromagnetic ordering of Mn-sublatttice and TC for the Nd-sublattice ferromagnetic ordering, respectively. TC increases significantly with increasing Cu content from 36 K at x = 0 to 100 K at x = 1.0. Moreover, it is found that the order of magnetic phase transition around TC also changes from first order at x < 0.6 to second order transition for x ≥ 0.6. The spontaneous magnetization found to decrease with the increase in Cu concentration which can be understood in the term of the dilution effect of Cu for Mn. The values of −ΔSM around TC decrease with increasing x from 27 J kg−1 K−1 for x = 0 to 0.5 J kg−1 K−1 for x = 1.0 under 0–5 T field. Refinement of neutron diffraction patterns for x = 0.2 confirms the magnetic states detected by magnetic study and also indicates that the lattice constants a and c show a distinct variation around TC. © 2014, AIP Publishing LLC.en_AU
dc.identifier.articlenumber17A921en_AU
dc.identifier.citationMd Din, M. F., Wang, J. L., Avdeev, M., Gu, Q. F., Zeng, R., Campbell, S. J., Kennedy, S. J., & Dou, S. X. (2014). Magnetic properties and magnetocaloric effect of NdMn2−xCuxSi2 compounds. Journal of Applied Physics, 115(17), 1-4, 17A921. doi:10.1063/1.4864249en_AU
dc.identifier.govdoc7220en_AU
dc.identifier.issn2378-0967en_AU
dc.identifier.issue17en_AU
dc.identifier.journaltitleJournal of Applied Physicsen_AU
dc.identifier.pagination1-4en_AU
dc.identifier.urihttp://dx.doi.org/10.1063/1.4864249en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7638en_AU
dc.identifier.volume115en_AU
dc.language.isoenen_AU
dc.publisherAIP Publishingen_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectX-ray detectionen_AU
dc.subjectInorganic compoundsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectCrystal defectsen_AU
dc.subjectCopperen_AU
dc.titleMagnetic properties and magnetocaloric effect of NdMn2−xCuxSi2 compoundsen_AU
dc.typeJournal Articleen_AU
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