Hard magnetic CoCr layer in ferromagnetic tunnel junctions

Justus M, Brückl H, Reiss G (2002)
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 240(1-3): 212-214.

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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.
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Justus M, Brückl H, Reiss G. Hard magnetic CoCr layer in ferromagnetic tunnel junctions. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 2002;240(1-3):212-214.
Justus, M., Brückl, H., & Reiss, G. (2002). Hard magnetic CoCr layer in ferromagnetic tunnel junctions. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 240(1-3), 212-214. doi:10.1016/S0304-8853(01)00762-4
Justus, M., Brückl, H., and Reiss, G. (2002). Hard magnetic CoCr layer in ferromagnetic tunnel junctions. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 240, 212-214.
Justus, M., Brückl, H., & Reiss, G., 2002. Hard magnetic CoCr layer in ferromagnetic tunnel junctions. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 240(1-3), p 212-214.
M. Justus, H. Brückl, and G. Reiss, “Hard magnetic CoCr layer in ferromagnetic tunnel junctions”, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 240, 2002, pp. 212-214.
Justus, M., Brückl, H., Reiss, G.: Hard magnetic CoCr layer in ferromagnetic tunnel junctions. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 240, 212-214 (2002).
Justus, M, Brückl, Hubert, and Reiss, Günter. “Hard magnetic CoCr layer in ferromagnetic tunnel junctions”. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 240.1-3 (2002): 212-214.
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