Magnetic, magnetocaloric and magnetoresistance properties of the intermetallic compound Nd7Pd3 have been investigated. It exhibits a first-order magnetic phase transition at its ferromagnetic ordering temperature (TC = 34K). Just above the TC, the magnetization isotherms exhibit a metamagnetic transition from the paramagnetic to a ferromagnetic state. In the immediate vicinity of TC, a field change of only 10kOe leads to the giant magnetocaloric effect of 13 J mol -1 K-1. For a field change of 50kOe a large magnetoresistance of ∼21% is observed near TC. First-principles electronic structure calculations indicate that the first-order phase transition in Nd7Pd3 may originate from the peculiar nature of the density of states near the Fermi level.
|Journal||Journal of Physics Condensed Matter|
|State||Published - 2009|
Bibliographical noteFunding Information:
This work was produced during the joint project between USATU (Ufa State Aviation Technical University) and UMPO (Ufa Engine Industrial Association) with title “Elaboration and industrial development of high-precision shaping coordinated technologies and superficial hardening of responsible details from Al-alloys with heightened constructional energy efficiency”, governed by the contract №40/10-30976/НЧ-НЧ-01-13-ХГ which was sponsored by the Ministry of Education and Science of the Russian Federation (contract №02.G25.31.0010 between UMPO and the Ministry of Education and Science of the Russian Federation) through the Resolution of the Russian Federation Government № 218 from April 9, 2010.