Title: Magnetic Force Microscopy Study of ${\text{Zr}}_{\text{2}}{\text{Co}}_{\text{11}}$ -Based Nanocrystalline Materials: Effect of Mo Addition

Abstract

The addition of Molybdenum was used to modify the nanostructure and enhance coercivity of rare-earth-free Zr₂Co₁₁-based nanocrystalline permanent magnets. The effect of Mo addition on magnetic domain structures of melt spun nanocrystalline Zr₁₆Co_84-xMo_x( $x=0$, 0.5, 1, 1.5, and 2.0) ribbons has been investigated. It was found that magnetic properties and local domain structures are strongly influenced by Mo doping. The coercivity of the samples increases with the increase in Mo content ( $x\le 1.5$). The maximum energy product ${\left(BH\right)}_{\text{max}}$increases with increasing $x$from 0.5 MGOe for $x=0$to a maximum value of 4.2 MGOe for $x=1.5$. The smallest domain size with a relatively short magnetic correlation length of 128 nm and largest root-mean-square phase shift ${\Phi }_{\text{rms}}$value of 0.66° are observed for the $x=1.5$. The optimal Mo addition promotes magnetic domain structure refinement and thus leads to a significant increase in coercivity and energy product in this sample.

Authors:

Yue, Lanping ;

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• Search DOE PAGES for ORCID "0000-0003-0406-0206"
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Jin, Yunlong ;

• Search DOE PAGES for author "Jin, Yunlong"
• Search DOE PAGES for ORCID "0000-0003-1946-8474"
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Zhang, Wenyong; Sellmyer, David J.

Publication Date:

2015-01-01

Sponsoring Org.:

USDOE

OSTI Identifier:

1209153

Grant/Contract Number:  

AC02-07CH11358

Resource Type:

Published Article

Journal Name:

Journal of Nanomaterials

Additional Journal Information:

Journal Name: Journal of Nanomaterials Journal Volume: 2015; Journal ID: ISSN 1687-4110

Publisher:

Hindawi Publishing Corporation

Country of Publication:

Egypt

Language:

English