Magnetic properties and magnetocaloric effect of NdMn2-xTixSi2 compounds

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dc.contributor.authorDin, MFMen_AU
dc.contributor.authorWang, JLen_AU
dc.contributor.authorCampbell, SJen_AU
dc.contributor.authorZeng, Ren_AU
dc.contributor.authorHutchison, WDen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorKennedy, SJen_AU
dc.contributor.authorDou, SXen_AU
dc.date.accessioned2014-06-23T01:44:03Zen_AU
dc.date.available2014-06-23T01:44:03Zen_AU
dc.date.issued2013-10-16en_AU
dc.date.statistics2014-06-23en_AU
dc.description.abstractThe structural and magnetic properties of the intermetallic compounds NdMn 2− x Ti x Si 2 ( x = 0, 0.1, 0.2, and 0.3) have been studied by x-ray and high resolution neutron powder diffraction, specific heat, dc magnetization, and differential scanning calorimetry measurements over the temperature range 3–450 K. The Curie temperature and Néel temperature of NdMn 2 Si 2 decrease from T C = 36 K and T N = 380 K to T C = 14 K and T N = 360 K, respectively, on substitution of Ti ( x = 0.3) for Mn. The magnetocaloric effect at the first order ferromagnetic phase transition at T C , has been investigated in detail. Under a change of magnetic field of 0–5 T, the maximum value of the magnetic entropy change is 27 J kg −1 K −1 at x = 0, reducing to 15.3 J kg −1 K −1 at x = 0.1 and 10 J kg −1 K −1 at x = 0.3; importantly, no thermal or field hysteresis losses occur (eliminated from 0.3 K and 28.5 J kg −1 at x = 0 around T C ) with increase in Ti concentration. Combined with the lack of any hysteresis effects, these findings indicate that NdMn 1.9 Ti 0.1 Si 2 compound offers potential as a candidate for magnetic refrigerator applications in the temperature region below 35 K. © 2013, IOP Publishing LTD.en_AU
dc.identifier.articlenumber445002en_AU
dc.identifier.citationMd Din, M. F. , Wang, J. L., Campbell, S. J., Zeng, R., Hutchison, W. D., Avdeev, M., Kennedy, S. J., & Dou, S. X. (2013). Magnetic properties and magnetocaloric effect of NdMn2-xTixSi2 compounds. Journal of Physics D: Applied Physics, 46(44), 445002. doi:10.1088/0022-3727/46/44/445002en_AU
dc.identifier.govdoc5414en_AU
dc.identifier.issn0022-3727en_AU
dc.identifier.issue44en_AU
dc.identifier.journaltitleJournal of Physics D: Applied Physicsen_AU
dc.identifier.urihttp://dx.doi.org/10.1088/0022-3727/46/44/445002en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5705en_AU
dc.identifier.volume46en_AU
dc.language.isoenen_AU
dc.publisherIOP Publishing Ltden_AU
dc.subjectNeutronsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectDiffractionen_AU
dc.subjectFerromagnetismen_AU
dc.subjectMagnetismen_AU
dc.subjectBehavioren_AU
dc.titleMagnetic properties and magnetocaloric effect of NdMn2-xTixSi2 compoundsen_AU
dc.typeJournal Articleen_AU
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