The Magnetic Properties of FeCoNbB Nanocrystalline Films

Xing Yu Mao; Zhi Jian Ke; Wei Dong Zou; Qiu Bao Lin; Yan Wu

doi:10.4028/www.scientific.net/AMR.787.388

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 787The Magnetic Properties of FeCoNbB Nanocrystalline...

The Magnetic Properties of FeCoNbB Nanocrystalline Films

Abstract:

The nanocrystalline FeCoNbB films are made by magnetron sputtering. The magnetization saturation of the filmes increase with the film thickness. The complex permeability spectra of the samples vary with the thickness of the film as well. The relaxation frequency is much higher than that of FeCoNbB ribbons because of magnetocrystalline anisotropy. The amplitude of the real part of the permeability decreases with the rising thickness of the film. This phenomenon suggest that the random anisotropy theory is to somewhat applicable for thin films. The X-ray diffraction pattern and the shape of the hysteresis loop show the crystal grains grow with the increase of the film thickness and also result a deterioration in magnetic softness.