Magnetic properties of exchange-coupled {alpha}-Fe/Nd{endash}Fe{endash}B multilayer thin-film magnets

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.364970· OSTI ID:496484

Shindo, M; Ishizone, M ^[1]; Sakuma, A ^[2]; Kato, H; Miyazaki, T ^[1]

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1. Department of Applied Physics, Faculty of Engineering, Tohoku University, Sendai 980-77 (Japan)
2. Magnetic and Electronic Materials Research Laboratory, Hitachi Metals, Limited, 5200 Mikajiri, Kumagaya 360 (Japan)

The multilayer thin films having the form of Ti(30 nm)/Fe(d{sub Fe})/[Nd{endash}Fe{endash}B(d{sub Nd{endash}Fe{endash}B})/Fe(d{sub Fe})] {times}5/Ti(30 nm)/glass were fabricated on glass substrates by means of radio frequency (rf) sputtering, with d{sub Fe} varied from 0 to 50 nm and d{sub Nd{endash}Fe{endash}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 d{sub Fe}{approximately}0 nm or d{sub Nd{endash}Fe{endash}B}{lt}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 H{sub cJ} on d{sub Fe} and d{sub Nd{endash}Fe{endash}B}. From the comparison between experiment and calculation, we can infer that the interlayer exchange-coupling strength is about 10{percent} of the intralayer couplings, which are found to be almost independent of d{sub Fe} and d{sub Nd{endash}Fe{endash}B}. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 496484
• Report Number(s): CONF-961141--
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON ALLOYS
COERCIVE FORCE
COUPLING
FERROMAGNETIC MATERIALS
HYSTERESIS
IRON
IRON ALLOYS
IRON BORIDES
LAYERS
MAGNETIC PROPERTIES
MAGNETIZATION
NEODYMIUM ALLOYS
NEODYMIUM BORIDES
THIN FILMS