Temperature effects on the magnetic properties of antiferromagnetically coupled amorphous Co 0.74 Si 0.26 /Si multilayers | Zendy

Zárate L. | Zendy; Quirós C. | Zendy; Vélez M. | Zendy; Yaacoub N. | Zendy; Meny C. | Zendy; PérezJunquera A. | Zendy; Martín J. I. | Zendy; Alameda J. M. | Zendy

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Temperature effects on the magnetic properties of antiferromagnetically coupled amorphous Co 0.74 Si 0.26 /Si multilayers

Author(s) -

Zárate L.,

Quirós C.,

Vélez M.,

Yaacoub N.,

Meny C.,

PérezJunquera A.,

Martín J. I.,

Alameda J. M.

Publication year - 2006

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.200566165

Subject(s) - condensed matter physics , amorphous solid , curie temperature , antiferromagnetism , kerr effect , materials science , coercivity , atmospheric temperature range , coupling (piping) , superparamagnetism , field (mathematics) , magnetization , magnetic field , chemistry , ferromagnetism , physics , crystallography , metallurgy , thermodynamics , mathematics , nonlinear system , quantum mechanics , pure mathematics

The effect of temperature on the magnetic properties of antiferromagnetically coupled amorphous Co 0.74 Si 0.25 /Si multilayers has been investigated by Magneto‐Optical Transverse Kerr Effect and Superconducting Quantum Interference Device. The studied temperature range has been varied between 5 K (15 K for Kerr loops) and room temperature. The results show that the Curie temperature of the multilayers is close to room temperature and that the antiferromagnetic exchange coupling can only be detected at temperatures close to the Curie temperature. When the temperature is decreased, the coercive field of the single films composing the multilayer increases, masking the antiferromagnetic coupling below 250 K. Field‐Cooling and Zero‐Field‐Cooling measurements suggest the presence of a small superparamagnetic contribution. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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