Improved soft magnetic properties in nanocrystalline FeCuNbSiB Nanophy® cores by intense magnetic field annealing

The effect of high external magnetic field (up to 7T) on soft magnetic properties in nanocrystalline Fe74.1Si15.7Nb3.1B6.1Cu1 Nanophy® cores has been investigated. The as-quenched amorphous ribbons were nanocrystallized by annealing between 540 and 620°C in transverse magnetic field. By varying anne...

Full description

Saved in:
Bibliographic Details
Published inJournal of magnetism and magnetic materials Vol. 422; pp. 475 - 478
Main Authors Madugundo, Rajasekhar, Geoffroy, Olivier, Waeckerle, Thierry, Frincu, Bianca, Kodjikian, Stéphanie, Rivoirard, Sophie
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.01.2017
Elsevier BV
Elsevier
Subjects
Anisotropy
Annealing
Coercivity
Core loss
Magnetic field annealing
Magnetic field induced anisotropy
Magnetic fields
Magnetic permeability
Magnetic properties
Nanocrystals
Nanoparticles
Nanophy
Pair ordering
Permeability
Physics
Quenching (cooling)
Studies
Magnetic field induced anisotropy
Pair ordering
Nanophy
Magnetic field annealing
Online AccessGet full text

Cover

More Information
Summary:The effect of high external magnetic field (up to 7T) on soft magnetic properties in nanocrystalline Fe74.1Si15.7Nb3.1B6.1Cu1 Nanophy® cores has been investigated. The as-quenched amorphous ribbons were nanocrystallized by annealing between 540 and 620°C in transverse magnetic field. By varying annealing field from 0 to 7T, induced anisotropy ranging from as low as 4J/m3 to as high as 41J/m3 is obtained. It is responsible for an increase in the cut-off frequency up to 300kHz when the material is submitted to dynamic magnetic excitations. A minimum coercivity of 0.74A/m is observed in the core annealed in 1T associated to low losses. The relative permeability decreases on increasing the annealing field intensity with a minimum value of 13,654 at 7T. Such permeability level opens the way to new applications of the Nanophy® alloys. •Effect of magnetic field (0–7T) in nanocrystalline Nanophy® cores was investigated.•Amorphous ribbons were annealing between 540 and 620°C in transverse magnetic field.•Induced anisotropy ranging from 4 to 41J/m3 was obtained by annealing in field 0−7T.•Permeability ranging between 135,122 and 13,654 was obtained.•A minimum coercivity of 0.74A/m was observed.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2016.09.063