Effect of film thickness on the structural and magnetic properties of Co2FeAl0.5Si0.5 Heusler alloy thin film

Co2FeAl0.5Si0.5(CFAS) thin films of thickness, t = 25 nm, 50 nm and 75 nm have been investigated using ferromagnetic resonance (FMR) to determine the Gilbert damping constant, effective magnetization, g-factor, and anisotropy field. Structural characterization reveals that the film with thickness, t...

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Bibliographic Details
Main Authors: Longchar, Lanuakum A., Rahaman, Mainur, Lalita, Basheed, G. A., Raja, M. Manivel, Kaul, S. N., Srinath, S.
Format: Conference Proceeding
Language:English
Subjects:
Anisotropy
Damping
Ferromagnetic resonance
Ferromagnetism
Film thickness
Heusler alloys
Magnetic properties
Magnetic saturation
Structural analysis
Thin films
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Summary:Co2FeAl0.5Si0.5(CFAS) thin films of thickness, t = 25 nm, 50 nm and 75 nm have been investigated using ferromagnetic resonance (FMR) to determine the Gilbert damping constant, effective magnetization, g-factor, and anisotropy field. Structural characterization reveals that the film with thickness, t = 50 nm, has the highest B2 crystalline order, highest magnetization (∼ 1304 Gauss), lowest inhomogeneous contribution to linewidth and lowest Gilbert damping constant (∼ 0.002). The temperature variation of saturation magnetization, MS(T), is best described by the Bloch T3/2 law of thermal demagnetization along with the thermal renormalization term in the spin-wave stiffness expression.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0178942