Hard magnetic CoCr layer in ferromagnetic tunnel junctions

Justus M, Brückl H, Reiss G (2002)
In: Journal of Magnetism and Magnetic Materials. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 240(1-3). ELSEVIER SCIENCE BV: 212-214.

Konferenzbeitrag | Veröffentlicht | Englisch
 
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Autor*in
Justus, M; Brückl, Hubert; Reiss, GünterUniBi
Abstract / Bemerkung
In magnetic tunnel junctions a highly spin-polarizing layer is usually exchange biased by an antiferromagnetic layer, an artificial antiferromagnetic layer system or a combination of both, while the magnetically soft layer is free to rotate. The use of a single layer of a hard magnetic material is rarely investigated up to now. In this paper, we present the electric and magnetic properties of tunnel junctions with a hard magnetic Co83Cr17 layer. The soft magnetic electrode consists of either a single Co layer or a Co/Ni80Fe20 bilayer. The magnetic anisotropy and coercive field H-subset of. of the CoCr layer depend on its thickness and the kind of the bottom layer (Cu or Ta) and can vary from H-subset of = 50-700 Oe. It is found that a thin Co cap layer also influences the hysteretic behavior. Furthermore, only small changes after annealing up to 450 C promise a high thermal stability for the application in magnetic tunnel junctions. Measurements of the tunnel magnetoresistance on large area junctions, however, show a strong magnetic coupling of the hard and soft electrodes. (C) 2002 Elsevier Science B.V. All rights reserved.
Stichworte
coercivity-thickness dependence; magnetoresistancc; tunneling; annealing
Erscheinungsjahr
2002
Titel des Konferenzbandes
Journal of Magnetism and Magnetic Materials
Band
240
Ausgabe
1-3
Seite(n)
212-214
ISSN
0304-8853
Page URI
https://pub.uni-bielefeld.de/record/1614395

Zitieren

Justus M, Brückl H, Reiss G. Hard magnetic CoCr layer in ferromagnetic tunnel junctions. In: Journal of Magnetism and Magnetic Materials. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. Vol 240. ELSEVIER SCIENCE BV; 2002: 212-214.
Justus, M., Brückl, H., & Reiss, G. (2002). Hard magnetic CoCr layer in ferromagnetic tunnel junctions. Journal of Magnetism and Magnetic Materials, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 240, 212-214. ELSEVIER SCIENCE BV. https://doi.org/10.1016/S0304-8853(01)00762-4
Justus, M., Brückl, H., and Reiss, G. (2002). “Hard magnetic CoCr layer in ferromagnetic tunnel junctions” in Journal of Magnetism and Magnetic Materials JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 240, (ELSEVIER SCIENCE BV), 212-214.
Justus, M., Brückl, H., & Reiss, G., 2002. Hard magnetic CoCr layer in ferromagnetic tunnel junctions. In Journal of Magnetism and Magnetic Materials. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. no.240 ELSEVIER SCIENCE BV, pp. 212-214.
M. Justus, H. Brückl, and G. Reiss, “Hard magnetic CoCr layer in ferromagnetic tunnel junctions”, Journal of Magnetism and Magnetic Materials, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 240, ELSEVIER SCIENCE BV, 2002, pp.212-214.
Justus, M., Brückl, H., Reiss, G.: Hard magnetic CoCr layer in ferromagnetic tunnel junctions. Journal of Magnetism and Magnetic Materials. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 240, p. 212-214. ELSEVIER SCIENCE BV (2002).
Justus, M, Brückl, Hubert, and Reiss, Günter. “Hard magnetic CoCr layer in ferromagnetic tunnel junctions”. Journal of Magnetism and Magnetic Materials. ELSEVIER SCIENCE BV, 2002.Vol. 240. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 212-214.

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