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Width-controlled M-type hexagonal strontium ferrite (SrFe12O19) nanoribbons with high saturation magnetization and superior coercivity synthesized by electrospinning
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Width-controlled M-type hexagonal strontium ferrite (SrFe12O19) nanoribbons with high saturation magnetization and superior coercivity synthesized by electrospinning
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Width-controlled M-type hexagonal strontium ferrite (SrFe12O19) nanoribbons with high saturation magnetization and superior coercivity synthesized by electrospinning
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Journal Article
Width-controlled M-type hexagonal strontium ferrite (SrFe12O19) nanoribbons with high saturation magnetization and superior coercivity synthesized by electrospinning
2015
Overview
Width-controlled M-type hexagonal SrFe
12
O
19
nanoribbons were synthesized for the first time via polyvinylpyrrolidone (PVP) sol assisted electrospinning followed by heat treatment in air and their chemical composition, microstructure and magnetic performance were investigated. Results demonstrated that as-obtained SrFe
12
O
19
nanoribbons were well-crystallized with high purity. Each nanoribbon was self-assembled by abundant single-domain SrFe
12
O
19
nanoparticles and was consecutive on structure and uniform on width. PVP in the spinning solution played a significant influence on the microstructure features of SrFe
12
O
19
nanoribbons. With PVP concentration increasing, the ribbon-width was increased but the particle-size was reduced, which distributed on a same ribbon were more intensive and then the ribbon-surface became flat. The room temperature magnetic performance investigation revealed that considerable large saturation magnetization (
M
s
) and coercivity (
H
c
) were obtained for all SrFe
12
O
19
nanoribbons and they increased with the ribbon-width broadening. The highest
M
s
of 67.9 emu·g
−1
and
H
c
of 7.31 kOe were concurrently acquired for SrFe
12
O
19
nanoribbons with the maximum ribbon-width. Finally, the Stoner-Wohlfarth curling model was suggested to dominate the magnetization reverse of SrFe
12
O
19
nanoribbons. It is deeply expected that this work is capable of opening up a new insights into the architectural design of 1D magnetic materials and their further utilization.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
