Magnetic properties and magnetic domain structure of bulk glass forming Nd 60 Al 10 Fe 20 Co 10  alloy | Zendy

Wei B. C. | Zendy; Yu G. S. | Zendy; Li W. H. | Zendy; Löser W. | Zendy; Roth S. | Zendy; Eckert J. | Zendy

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Magnetic properties and magnetic domain structure of bulk glass forming Nd 60 Al 10 Fe 20 Co 10 alloy

Author(s) -

Wei B. C.,

Yu G. S.,

Li W. H.,

Löser W.,

Roth S.,

Eckert J.

Publication year - 2004

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

eISSN - 1521-396X

pISSN - 0031-8965

DOI - 10.1002/pssa.200306807

Subject(s) - coercivity , materials science , magnetic force microscope , magnetic domain , metastability , quenching (fluorescence) , microstructure , alloy , magnetic shape memory alloy , condensed matter physics , single domain , magnetic alloy , magnetization , metallurgy , magnetic field , chemistry , optics , physics , organic chemistry , quantum mechanics , fluorescence

The transition from hard to soft magnetic behaviour with increasing quenching rate is shown for Nd 60 Al 10 Fe 20 Co 10 melt‐spun ribbons with different thickness. Microstructure and magnetic domain structure of ribbons were studied by magnetic force microscopy (MFM). Particle sizes <5 nm decreasing gradually with increasing quenching rate were deduced from topographic images which differ from large‐scale magnetic domains with a periodicity of about 350 nm in all ribbons irrespective the coercivity. This indicates that the magnetic properties of the alloy are governed by interaction of small magnetic particles. It is concluded that the presence of short‐range‐ordered structures with a local ordering similar to the A1 metastable Nd–Fe binary phase is responsible for the hard magnetic properties in samples subjected to relatively low quenching rate. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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