Magnetic properties of exchange-coupled α-Fe/Nd-Fe-B multilayer thin-film magnets

M. Shindo, M. Ishizone, A. Sakuma, H. Kato, T. Miyazaki

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)

Abstract

The multilayer thin films having the form of Ti(30 nm/Fe(dFe)/[Nd-Fe-B(dNd-Fe-B)/Fe(dFe)] X5/Ti(30 nm)/glass were fabricated on glass substrates by means of radio frequency (rf) sputtering, with dFe varied from 0 to 50 nm and dNd-Fe-B from 0 to 100 nm. Magnetization measurements have revealed that the minor loops of the films are reversible in a certain range of demagnetization fields except for the films with dFe∼0 nm or dNd-Fe-B<10 nm Micromagnetic calculation of magnetization curves has been performed, which has well reproduced the observed hysteresis loops including spring-back behavior and the dependence of the coercive field HcJ on dFe and dNd-Fe-B. From the comparison between experiment and calculation, we can infer that the interlayer exchange-coupling strength is about 10% of the intralayer couplings, which are found to be almost independent of dFe and dNd-Fe-B.

Original languageEnglish
Pages (from-to)4444-4446
Number of pages3
JournalJournal of Applied Physics
Volume81
Issue number8 PART 2A
Publication statusPublished - 1997 Apr 15
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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