Microwave Sintered Fe/MgO Soft Magnetic Composite

• Authors: R. Bureš , M. Fáberová , P. Kollár , J. Füzer , S. Dobák , F. Onderko , P. Kurek
• Languages of publication: EN

Abstracts

EN

Micro/nano soft magnetic composite based on the Fe microparticles and the MgO nanoparticles was prepared by cold pressing followed by microwave sintering. Magnetic and mechanical properties of the green compact as well as sintered samples were measured. Coercivity, permeability, resistivity, elastic modulus and transverse rupture strength values in dependence on MgO content were investigated. The influence of MgO content ratio on properties was different in the case of as pressed green samples in comparison to sintered bodies. Microstructure formation and its influence on mechanical and magnetic properties are discussed. The coercivity of the green compacts with 1-5 wt% of MgO exhibits approximately 460 A/m and after sintering decreases to approximately 290 A/m. The real part of complex permeability at the frequency of 100 kHz exhibits a maximum for 2 wt% of MgO in green compacts, while for 10 wt% in sintered samples. It was observed that increase of the content of MgO causes decrease of the permeability. Properties of the sintered composite are related to formation of magnesium ferrite as well as volume distribution of residual MgO in dependence on initial MgO ratio.

Keywords

EN

81.05.-t; 75.50.-y; 62.20.-x

Discipline

• 62.20.-x: Mechanical properties of solids
• 75.50.-y: Studies of specific magnetic materials
• 81.05.-t: Specific materials: fabrication, treatment, testing, and analysis(for superconducting materials, see 74.70.-b, and 74.72.-h; for magnetic materials, see 75.50.-y; for optical materials, see 42.70.-a; for dielectric materials, see 77.84.-s; for disperse systems and complex fluids, see 82.70.-y; see also 82.75.-z Molecular sieves, zeolites, clathrates, and other complex solids; for materials properties, see sections 60 and 70)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 780-782

Dates

published

2017-04

Contributors

author

R. Bureš

• Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

M. Fáberová

• Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

P. Kollár

• Institute of Physics, Faculty of Science, P.J. Šafárik University in Kosice, Park Angelinum 9, 041 54 Košice, Slovak Republic

author

J. Füzer

• Institute of Physics, Faculty of Science, P.J. Šafárik University in Kosice, Park Angelinum 9, 041 54 Košice, Slovak Republic

author

S. Dobák

• Institute of Physics, Faculty of Science, P.J. Šafárik University in Kosice, Park Angelinum 9, 041 54 Košice, Slovak Republic

author

F. Onderko

• Institute of Physics, Faculty of Science, P.J. Šafárik University in Kosice, Park Angelinum 9, 041 54 Košice, Slovak Republic

author

P. Kurek

• Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

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Identifiers

DOI

10.12693/APhysPolA.131.780