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Title: Anisotropic magnetocaloric response in AlFe2B2

Journal Article · · Journal of Alloys and Compounds
ORCiD logo [1];  [1];  [2];  [3];  [4]; ORCiD logo [5];  [2];  [6]
  1. Northeastern Univ., Boston, MA (United States). College of Engineering
  2. Ames Lab., Ames, IA (United States). Division of Materials Science & Engineering
  3. Univ. of Delaware, Newark, DE (United States). Dept. of Physics and Astronomy
  4. Ames Lab., Ames, IA (United States). Division of Materials Science & Engineering; Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  5. McCallum Consulting LLC, Santa Fe, NM (United States)
  6. Northeastern Univ., Boston, MA (United States). College of Engineering; Northeastern Univ., Boston, MA (United States). Mechanical Engineering

Experimental investigations of the magnetocaloric response of the intermetallic layered AlFe2B2 compound along the principle axes of the orthorhombic cell were carried out using aligned plate-like crystallites with an anisotropic [101] growth habit. Results were confirmed to be consistent with density functional theory calculations. Field-dependent magnetization data confirm that the a-axis is the easy direction of magnetization within the (ac) plane. The magnetocrystalline anisotropy energy required to rotate the spin quantization vector from the c-to the a-axis direction is determined as K~0.9 MJ/m3 at 50 K. Magnetic entropy change curves measured near the Curie transition temperature of 285 K reveal a large rotating magnetic entropy change of 1.3 J kg-1K-1 at μ0Happ = 2 T, consistent with large differences in magnetic entropy change ΔSmag measured along the a- and c-axes. Overall, this study provides insight of both fundamental and applied relevance concerning pathways for maximizing the magnetocaloric potential of AlFe2B2 for thermal management applications.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AR00000754; AC02-07CH11358
OSTI ID:
1436423
Alternate ID(s):
OSTI ID: 1548702
Report Number(s):
IS-J-9650; PII: S0925838818306923
Journal Information:
Journal of Alloys and Compounds, Vol. 745, Issue C; ISSN 0925-8388
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 43 works
Citation information provided by
Web of Science

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Cited By (6)

Crystal structure, spin reorientation, and rotating magnetocaloric properties of NdCo 5- x Si x compounds journal June 2019
A progress report on the MAB phases: atomically laminated, ternary transition metal borides text January 2019
Rotating magnetocaloric effect over a wide room temperature range in oriented polycrystalline Nd 1 −  x Tb x Co 5 journal January 2020
Coupling Phenomena in Magnetocaloric Materials journal August 2018
A progress report on the MAB phases: atomically laminated, ternary transition metal borides text January 2019
A progress report on the MAB phases: atomically laminated, ternary transition metal borides journal July 2019

Figures / Tables (10)


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