Effects of Cr substitution on structural and magnetic properties in La0.7Pr0.3Fe11.4Si1.6 compound

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dc.contributor.authorDin, MFMen_AU
dc.contributor.authorWang, JLen_AU
dc.contributor.authorStuder, AJen_AU
dc.contributor.authorGu, QFen_AU
dc.contributor.authorZeng, Ren_AU
dc.contributor.authorDebnath, JCen_AU
dc.contributor.authorShamba, Pen_AU
dc.contributor.authorKennedy, SJen_AU
dc.contributor.authorDou, SXen_AU
dc.date.accessioned2016-10-05T23:35:45Zen_AU
dc.date.available2016-10-05T23:35:45Zen_AU
dc.date.issued2014-04-03en_AU
dc.date.statistics2016-10-06en_AU
dc.description.abstractIn an effort to explore the effect of substitution Fe by Cr in NaZn13-type La0.7Pr0.3Fe11.4−xCrxSi1.6 (x = 0, 0.06, 0.12, 0.26, and 0.34) compounds, the structure and magnetic properties have been investigated by high intensity of x-ray and neutron diffraction, scanning electron microscopy, specific heat, and magnetization measurement. It has been found that a substitution of Cr for Fe in this compounds leads to decrease in the lattice parameter a at room temperature but variation on Curie temperature (TC). While the first order nature of magnetic phase transition around TC does not change with increasing Cr content up to x = 0.34. High intensity x-ray and neutron diffraction study at variable temperatures for highest Cr concentration x = 0.34 confirmed the presence of strong magneto-volume effect around TC and indicated the direct evident of coexistence across magnetic transition as characteristic of first order nature. The values of −ΔSM around TC decrease from 17 J kg−1 K−1 for x = 0 to 12 J kg−1 K−1 for x = 0.06 and then increases with further increasing Cr content up to 17.5 J kg−1 K−1 for x = 0.34 under a change of 0–5 T magnetic field. Similar behavior on relative cooling power which is decrease from 390 J kg−1 for x = 0 to 365 J kg−1 for x = 0.06 at the beginning and then increases up to 400 J kg−1 for x = 0.34. From the point of this view with the highest Cr concentration (x = 0.34) exhibits favourable material candidate for magnetic refrigerator application therefore should inspire further study concerning on higher Cr concentration in this compound. © 2014, AIP Publishing LLC.en_AU
dc.identifier.articlenumber17A942en_AU
dc.identifier.citationMd Din, M. F., Wang, J. L., Studer, A. J., Gu, Q. F., Zeng, R., Debnath, J. C., Shamba, P., Kennedy, S. J. & Dou, S. X. (2014). Effects of Cr substitution on structural and magnetic properties in La0.7Pr0.3Fe11.4Si1.6 compound. Journal of Applied Physics, 115(17), 17A942. doi:10.1063/1.4868703en_AU
dc.identifier.govdoc7222en_AU
dc.identifier.issn2378-0967en_AU
dc.identifier.issue17en_AU
dc.identifier.journaltitleJournal of Applied Physicsen_AU
dc.identifier.urihttp://dx.doi.org/10.1063/1.4868703en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7640en_AU
dc.identifier.volume115en_AU
dc.language.isoenen_AU
dc.publisherAIP Scitationen_AU
dc.subjectMagnetismen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectTemperature rangeen_AU
dc.subjectElectron microscopyen_AU
dc.subjectInorganic compoundsen_AU
dc.subjectFerromagnetismen_AU
dc.titleEffects of Cr substitution on structural and magnetic properties in La0.7Pr0.3Fe11.4Si1.6 compounden_AU
dc.typeJournal Articleen_AU
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