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Title: Magnetic microstructure and magnetic properties of uniaxial itinerant ferromagnet Fe3GeTe2

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4961592· OSTI ID:1325649
ORCiD logo [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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Here, magnetic force microscopy was used to observe the magnetic microstructure of Fe3GeTe2 at 4 K on the (001) surface. The surface magnetic structure consists of a two-phase domain branching pattern that is characteristic for highly uniaxial magnets in the plane perpendicular to the magnetic easy axis. The average surface magnetic domain width Ds = 1.3 μm determined from this pattern, in combination with intrinsic properties calculated from bulk magnetization data (the saturation magnetization Ms = 376 emu/cm3 and the uniaxial magnetocrystalline anisotropy constant Ku = 1.46 × 107 erg/cm3), was used to determine the following micromagnetic parameters for Fe3GeTe2 from phenomenological models: the domain wall energy γw = 4.7 erg/cm2, the domain wall thickness δw = 2.5 nm, the exchange stiffness constant Aex = 0.95 × 10–7 erg/cm, the exchange length lex = 2.3 nm, and the critical single domain particle diameter dc = 470 nm.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396; DEAC52-06NA25396
OSTI ID:
1325649
Alternate ID(s):
OSTI ID: 1310827
Report Number(s):
LA-UR-16-22303; JAPIAU
Journal Information:
Journal of Applied Physics, Vol. 120, Issue 8; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 79 works
Citation information provided by
Web of Science

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Cited By (13)

Intrinsic Van Der Waals Magnetic Materials from Bulk to the 2D Limit: New Frontiers of Spintronics journal May 2019
Fe 5− x Ge 2 Te 2 —a New Exfoliable Itinerant Ferromagnet with High Curie Temperature and Large Perpendicular Magnetic Anisotropy journal December 2019
The van der Waals Ferromagnets Fe 5- δ GeTe 2 and Fe 5- δ -x Ni x GeTe 2 - Crystal Structure, Stacking Faults, and Magnetic Properties : The van der Waals Ferromagnets Fe journal November 2018
Hard magnetic properties in nanoflake van der Waals Fe3GeTe2 journal April 2018
Two-dimensional itinerant ferromagnetism in atomically thin Fe3GeTe2 journal August 2018
Anisotropic magnetocaloric effect in Fe3−xGeTe2 journal September 2019
Wafer-scale two-dimensional ferromagnetic Fe3GeTe2 thin films grown by molecular beam epitaxy journal September 2017
Antiferromagnetic coupling of van der Waals ferromagnetic Fe 3 GeTe 2 journal March 2019
Field-dependent anisotropic magnetic coupling in layered ferromagnetic Fe 3 − x GeTe 2 journal September 2019
Antisymmetric magnetoresistance in van der Waals Fe 3 GeTe 2 /graphite/Fe 3 GeTe 2 trilayer heterostructures journal July 2019
Two-Dimensional Itinerant Ising Ferromagnetism in Atomically thin Fe3GeTe2 text January 2018
Hard magnetic properties in nanoflake van der Waals Fe3GeTe2 text January 2018
Anisotropic magnetocaloric effect in Fe$_{3-x}$GeTe$_2$ text January 2019

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