CERAMIC PROCESSING ROUTE AND CHARACTERIZATION OF A NI-ZN FERRITE FOR APPLICATION IN A PULSED-CURRENT MONITOR | Zendy

Vera Lúcia Othéro de Brito | Zendy; Antônio Carlos da Cunha Migliano | Zendy; Luiza Lemos | Zendy; Francisco Cristóvão Lourenço de Melo | Zendy

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CERAMIC PROCESSING ROUTE AND CHARACTERIZATION OF A NI-ZN FERRITE FOR APPLICATION IN A PULSED-CURRENT MONITOR

Author(s) -

Vera Lúcia Othéro de Brito,

Antônio Carlos da Cunha Migliano,

Luiza Lemos,

Francisco Cristóvão Lourenço de Melo

Publication year - 2009

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier09031603

Subject(s) - materials science , ferrite (magnet) , ceramic , characterization (materials science) , metallurgy , current (fluid) , engineering , electrical engineering , composite material , nanotechnology

Pulsed-current sensors require transducers constituted of magnetic materials with high magnetic permeability in a frequency range compatible with the period and the frequency of the current pulse. The use of ferrites in this application has the advantage of low cost and low losses in high frequencies. The aim of this work is to present a procedure for selection of the ceramic processing route of Ni-Zn ferrite for application in a pulsed-current sensor. The ferrite samples were prepared under different processing parameters and characterized in terms of microstructure, chemical analysis, complex magnetic permeability, and magnetic hysteresis. The chosen processing route included high energy milling of the pre-sintered powder, its disaggregation before sample forming, and sintering of the samples

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