Structure and Magnetic Properties Investigation of CoZr and CoZrN Thin Films

Jitendra Singh; Arvind K. Singh; Sanjeev K. Gupta; J. Akhtar

doi:10.4028/www.scientific.net/AMM.464.83

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 464Structure and Magnetic Properties Investigation of...

Structure and Magnetic Properties Investigation of CoZr and CoZrN Thin Films

Abstract:

nanocomposite [(Co_91.5Zr_8.5)- or CZN films has been prepared by reactive co-sputter deposition method. Nitrogen content plays key role to tune soft magnetic properties. Experimental observation shows that, non-magnetic nitrogen content enhances magnetization and reduces coercivity. The nanostructure is composed of Co nanoclusters embedded in CoN/ZrN matrix, revealed by high resolution transmission electron microscope study. The d-spacing of single Co nanocluster was found to be ~0.22nm corresponding to (002) phase of Cobalt. X-ray diffraction result is in agreement with cubic (400) and (622) phase of CoZr. High electrical resistivity ρ_s~108μΩ-cm attained corresponding to 16% N₂ content films. Hysteresis loop squareness depends on film thickness and coercivity squareness (S^*)~0.84, obtained for ~250nm film thickness. A correlated composite nanostructure evolution is responsible for nitrogen induced magnetization and, suggests that film properties can tuned by controlling nitrogen content, in CoN/ZrN composite matrix.

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Periodical:

Applied Mechanics and Materials (Volume 464)

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83-88

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https://doi.org/10.4028/www.scientific.net/AMM.464.83

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Online since:

November 2013

Authors:

Jitendra Singh*, Arvind K. Singh, Sanjeev K. Gupta, J. Akhtar

Keywords:

Nanocomposite, Reactive Sputtering, Soft Magnetic, Thin Film

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