Magnetic properties of Nd-Fe-B-Zr bulk nanocomposite magnets prepared by spark plasma sintering method

K. Tanaka, T. Fukuzaki, T. Miyasaka, K. Nishimoto, Y. Muro, K. Nishio, R. Tamura

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We have investigated the magnetic properties and the microstructure of Nd8Fe85B5Zr2 bulk nanocomposite magnets consolidated by Spark Plasma Sintering (SPS) method with various sintering temperatures and heating speeds. The volume fractions of a soft magnetic phase (a-Fe or Fe3B) and a hard magnetic phase (Nd 2Fe14B) are found to vary sensitively with the sintering temperature, and the samples sintered at 600-650°C show optimum hard magnetic properties. At the same sintering temperature of 600°C, the sample with a higher heating speed of 2400°C/min exhibits larger coercivity and remanence than that with a lower heating speed of 244°C/min, which is attributed to the difference in the grain size.

Original languageEnglish
Article number012014
JournalJournal of Physics: Conference Series
Volume106
Issue number1
DOIs
Publication statusPublished - 2008 Mar 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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