Cooling Rate Effects on the Microstructure, Magnetic Properties, and DC Superposition Behavior of NiCuZn Ferrites

Hsing-I Hsiang, Jhao Ling Wu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

This study investigated the cooling rate effects on the magnetic properties of NiCuZn ferrites. A copper-rich phase segregated near the grain boundaries during sintering was observed. The amount of copper-rich precipitates depends strongly on the cooling rate and decreases with decreasing cooling rate. The quenched sample exhibited superior initial permeability and DC-bias-superposition characteristics due to the highest saturation magnetization and a thick nonmagnetic second phase segregated at the grain boundaries. A NiCuZn ferrite with superior initial permeability and DC superposition characteristics can be obtained by controlling the cooling rate to adjust the copper-rich precipitate thickness at the grain boundaries.

Original languageEnglish
Pages (from-to)1065-1070
Number of pages6
JournalInternational Journal of Applied Ceramic Technology
Volume12
Issue number5
DOIs
Publication statusPublished - 2015 Sep 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Marketing
  • Materials Chemistry

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