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Correlating Crystallography, Magnetism, and Electronic Structure Across Anhysteretic First-Order Phase Transition in Pr2In

Journal Article · · ECS Journal of Solid State Science and Technology
Here, temperature-dependent powder X-ray diffraction and magnetization measurements of Pr2In conclusively prove that the unusual anhysteretic first-order paramagnetic-ferromagnetic phase transition in the compound is related to concurrent changes in both the magnetic and crystallographic lattices. At the same time, the hexagonal Ni2In-type structure is stable at least between 6 and 298 K, including at TC = ~57 K. From the density functional theory calculations, the electronic structure of the compound is extraordinarily sensitive to minor changes in lattice parameters that occur across the phase transition, revealing the origin of strong magnetoelastic coupling. In the vicinity of TC, the maximum entropy change, ΔSMax = -16 J Kg-1K-1 induced by a moderate magnetic field change of 20 kOe (ΔSMax = -20 J Kg-1K-1 for 50 kOe magnetic field change) is comparable to other known potentially functional materials demonstrating large cryogenic magnetocaloric effect.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science - Office of Basic Energy Sciences
Grant/Contract Number:
AC02-06CH11357; AC02-07CH11358
OSTI ID:
1864270
Alternate ID(s):
OSTI ID: 1894870
Report Number(s):
IS-J-10,777; DE-AC02-07CH11358; DE-AC02-06CH11357
Journal Information:
ECS Journal of Solid State Science and Technology, Journal Name: ECS Journal of Solid State Science and Technology Journal Issue: 4 Vol. 11; ISSN 2162-8769
Publisher:
Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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  • Gutfleisch, O.; Gottschall, T.; Fries, M.
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 374, Issue 2074 https://doi.org/10.1098/rsta.2015.0308
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