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Magnetic properties and magnetocaloric effect in layered NdMn 1.9V0.1Si2
Australian Institute for Innovative Materials - Papers
  • M F Md Din, University of Wollongong
  • Jianli Wang, University of Wollongong
  • R Zeng, University of Wollongong
  • Shane Kennedy, ANSTO
  • S J Campbell, University of New South Wales
  • S X Dou, University of Wollongong
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Md Din, M. F., Wang, J. L., Zeng, R., Kennedy, S. J., Campbell, S. J. & Dou, S. X. (2014). Magnetic properties and magnetocaloric effect in layered NdMn 1.9V0.1Si2. EPJ Web of Conferences, 75 1-4.

The structural and magnetic properties of the compounds NdMn2-xVxSi2 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 layered NdMn1.9V0.1Si2 are been indicate at TC ~ 24 K and TN ~ 376 K respectively. The giant magnetocaloric effect (GMCE) around TC is found in layered NdMn1.9V0.1Si2 associated with first order magnetic transition from antiferromagnetic [AFil-type] to ferromagnetic [F(Nd)+Fmc]. This behaviorhas been confirmed as contribution of the magnetostructural coupling by using neutron powder diffraction. The magnetic entropy change −ΔSM ~ 25.4J kg-1 K-1 and adiabatic temperature change ΔTad~ 6.7 K have been determined using magnetization and specific heat measurement under 0-8 T field applied. This compound belongs with the small thermal ~ 0.8 K and magnetic ~ 0.1 T hysteresis characteristic providing high potential material for magnetic refrigerator.
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M F Md Din, Jianli Wang, R Zeng, Shane Kennedy, et al.. "Magnetic properties and magnetocaloric effect in layered NdMn 1.9V0.1Si2" (2014) p. 1 - 4
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