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Magnetocaloric Behavior in Ternary Europium Indides EuT5In: Probing the Design Capability of First-Principles-Based Methods on the Multifaceted Magnetic Materials
- Source :
- Chemistry of Materials. 29:2599-2614
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The most favorable structures and the types of magnetic ordering predicted from first-principles-based methods in a family of closely related transition-metal-rich indides EuT5In (T = Cu, Ag, Au) are gauged against relevant experiments. The EuT5In compounds adopt a different structure for each different coinage metal—EuCu5In (hR42; R3m, a = 5.0933(7), c = 30.557(6) A), EuAg5In (oP28; Pnma, a = 9.121(2), b = 5.645(1), c = 11.437(3) A), and EuAu5In (tI14; I4/mmm, a = 7.1740(3), c = 5.4425(3) A)—and crystallize with the Sr5Al9, CeCu6, and YbMo2Al4 structure types, respectively. EuCu5In and EuAg5In order antiferromagnetically at TN = 12 and 6 K, respectively, whereas EuAu5In is ferromagnetic below TC = 13 K. EuCu5In exhibits complex magnetism: after the initial drop at TN, the magnetization rises again below 8 K, and a weak metamagnetic-like transition occurs at 2 K in μ0H = 1.8 T. The electronic heat capacity of EuCu5In, γ = ∼400 mJ/(mol K2), points to strong electronic correlations. Spin-polarized densitie...
- Subjects :
- Chemistry
Magnetism
General Chemical Engineering
chemistry.chemical_element
Nanotechnology
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Heat capacity
0104 chemical sciences
Magnetization
Crystallography
Ferromagnetism
Materials Chemistry
Magnetic refrigeration
0210 nano-technology
Europium
Ternary operation
Subjects
Details
- ISSN :
- 15205002 and 08974756
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- Chemistry of Materials
- Accession number :
- edsair.doi...........d15c391e97c4dea58bcd264bdc03bb55