Andrés, J. P., González Sanz, J. A., Hase, Thomas P. A., Tanner, B. K. (Brian Keith) and Riveiro, J.. (2008) Artificial ferrimagnetic structure and thermal hysteresis in Gd0.47Co0.53∕Co multilayers. Physical Review B (Condensed Matter and Materials Physics), Vol.77 (No.14). article no. 144407 . ISSN 1098-0121

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Abstract

Gd0.47Co0.53∕Co multilayers are presented as an alternative to classical Gd∕Fe or Gd∕Co to study ferrimagnetic interactions in an artificial multilayered structure with sharper interfaces, since interdiffusion processes are avoided. This system is shown to present all the characteristic features of Gd∕Co and Gd∕Fe multilayers, as evidenced by the existence of compensation temperatures, spin-flop transitions, and thermal hysteresis. By using this improved structure, we show that the temperatures at which the sample suffers magnetization reversal when cooling or heating during the thermal hysteresis loop depend on the applied field and coercivity, while anisotropy determines the smoothness of the reversal process. Details of the temperature dependency of coercivity and spin-flop fields in this system are also provided.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Ferrimagnetism, Hysteresis, Alloys -- Magnetic properties
Journal or Publication Title:	Physical Review B (Condensed Matter and Materials Physics)
Publisher:	American Physical Society
ISSN:	1098-0121
Official Date:	2008
Dates:	Date Event 2008 Published
Volume:	Vol.77
Number:	No.14
Number of Pages:	7
Page Range:	article no. 144407
Identification Number:	10.1103/PhysRevB.77.144407
Status:	Peer Reviewed
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/39718

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