The thickness-dependent dynamic magnetic property of Co{sub 2}FeAl films grown by molecular beam epitaxy

Journal Article · Mon Oct 27 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4900792· OSTI ID:22310660

Qiao, Shuang ^[1]; Nie, Shuaihua; Zhao, Jianhua; Zhang, Xinhui ^[1]

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1. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083 (China)

Co{sub 2}FeAl films with different thickness were prepared at different temperature by molecular beam epitaxy. Their dynamic magnetic property was studied by the time-resolved magneto-optical Kerr effect measurements. It is observed that the intrinsic damping factor of Co{sub 2}FeAl for [100] orientation is not related to the film's thickness and magnetic anisotropy as well as temperature at high-field regime, but increases with structural disorder of Co{sub 2}FeAl. The dominant contribution from the inhomogeneous magnetic anisotropy is revealed to be responsible for the observed extremely nonlinear and drastic field-dependent damping factors at low-field regime.

• OSTI ID: 22310660
• Journal Information: Applied Physics Letters, Vol. 105, Issue 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ANISOTROPY
COBALT COMPOUNDS
FILMS
IRON COMPOUNDS
KERR EFFECT
MAGNETIC PROPERTIES
MAGNETO-OPTICAL EFFECTS
MOLECULAR BEAM EPITAXY
NONLINEAR PROBLEMS
THICKNESS
TIME RESOLUTION