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Berlin 2008 – scientific programme

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MA: Fachverband Magnetismus

MA 28: Magnetic Thin Films III

MA 28.7: Talk

Thursday, February 28, 2008, 16:00–16:15, H 1012

Thermal stability of GMR stack systems: Parameter variation of the artificial antiferromagnet — •Matthias Hawraneck1,2, Wolfgang Raberg1, Jürgen Zimmer1, Klemens Prügl1, Thomas Bever1, and Lambert Alff21Infineon Technologies AG, Am Campeon 1-12, 85579 Neubiberg — 2Institut für Materialwissenschaft, TU Darmstadt, Petersenstr. 23, 64287 Darmstadt

After the discovery of the GMR effect in 1988 by Peter Grünberg and Albert Fert, this effect has gained a huge interest, because of its application potential. A very important attribute of GMR stacks system used in applications, e.g. read heads or automotive sensors, is their thermal stability, due to the lifetime and the temperature profiles in these applications. In high volume production of thin layers, like in GMR stacks, a certain variation of the thicknesses and the compositions of different layers have to be anticipated. Besides the resulting differences in performance, the influence of these variations on the stability is very important. Therefore we focus in our studies on the influence of process variations of the artificial antiferromagnet on the thermal stability.

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