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Title: Stress induced anisotropy in CoFeMn soft magnetic nanocomposites

Abstract

The use of processing techniques to create magnetic anisotropy in soft magnetic materials is a well-known method to control permeability and losses. In nanocomposite materials, field annealing below the Curie temperature results in uniaxial anisotropy energies up to similar to 2 kJ/m(3). Higher anisotropies up to similar to 10 kJ/m(3) result after annealing Fe-Si compositions under stress due to residual stress in the amorphous matrix acting on body centered cubic crystals. This work describes near zero magnetostriction Co80-x-yFexMnyNb4B14Si2 soft magnetic nanocomposites, where x and y < 8 at. % with close packed crystalline grains that show stress induced anisotropies up to similar to 50 kJ/m(3) and improved mechanical properties with respect to Fe-Si compositions. Difference patterns measured using transmission X-ray diffraction show evidence of affine strain with respect to the stress axis. (C) 2015 AIP Publishing LLC.

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1211350
DOE Contract Number:  
DE-AR0000219
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English

Citation Formats

Leary, AM, Keylin, V, Ohodnicki, PR, and McHenry, ME. Stress induced anisotropy in CoFeMn soft magnetic nanocomposites. United States: N. p., 2015. Web. doi:10.1063/1.4919230.
Leary, AM, Keylin, V, Ohodnicki, PR, & McHenry, ME. Stress induced anisotropy in CoFeMn soft magnetic nanocomposites. United States. doi:10.1063/1.4919230.
Leary, AM, Keylin, V, Ohodnicki, PR, and McHenry, ME. Thu . "Stress induced anisotropy in CoFeMn soft magnetic nanocomposites". United States. doi:10.1063/1.4919230.
@article{osti_1211350,
title = {Stress induced anisotropy in CoFeMn soft magnetic nanocomposites},
author = {Leary, AM and Keylin, V and Ohodnicki, PR and McHenry, ME},
abstractNote = {The use of processing techniques to create magnetic anisotropy in soft magnetic materials is a well-known method to control permeability and losses. In nanocomposite materials, field annealing below the Curie temperature results in uniaxial anisotropy energies up to similar to 2 kJ/m(3). Higher anisotropies up to similar to 10 kJ/m(3) result after annealing Fe-Si compositions under stress due to residual stress in the amorphous matrix acting on body centered cubic crystals. This work describes near zero magnetostriction Co80-x-yFexMnyNb4B14Si2 soft magnetic nanocomposites, where x and y < 8 at. % with close packed crystalline grains that show stress induced anisotropies up to similar to 50 kJ/m(3) and improved mechanical properties with respect to Fe-Si compositions. Difference patterns measured using transmission X-ray diffraction show evidence of affine strain with respect to the stress axis. (C) 2015 AIP Publishing LLC.},
doi = {10.1063/1.4919230},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}