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Title: Magnetic properties of single crystalline itinerant ferromagnet AlFe 2 B 2

Journal Article · · Physical Review Materials
 [1];  [1];  [2];  [3];  [3];  [2];  [2];  [2];  [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Ames Lab., Ames, IA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Here, single crystals of AlFe2B2 have been grown using the self-flux growth method, and then we measured the structural properties, temperature- and field-dependent magnetization, and temperature-dependent electrical resistivity at ambient as well as high pressure. The Curie temperature of AlFe2B2 is determined to be 274 K. The measured saturation magnetization and the effective moment for the paramagnetic Fe ion indicate the itinerant nature of the magnetism with a Rhode-Wohlfarth ratio MC/Msat ≈ 1.14. Temperature-dependent resistivity measurements under hydrostatic pressure show that transition temperature TC is suppressed down to 255 K for p = 2.24 GPa pressure with a suppression rate of ~–8.9 K/GPa. The anisotropy fields and magnetocrystalline anisotropy constants are in reasonable agreement with density functional theory calculations.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1471218
Alternate ID(s):
OSTI ID: 1465227
Report Number(s):
IS-J-9709; PRMHAR
Journal Information:
Physical Review Materials, Vol. 2, Issue 8; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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