Abstract In this paper, we have obtained and investigated the magnetic behaviours of the ferromagnetic layer in the symmetric spin valves of Co/Cu/NiFe and NiFe/Cu/Co by measuring with a vibrating sample magnetometer and analysing in terms of the multi-domain Ising models. It has been found that some magnetic layer can have quite different magnetic behaviours in different structures of spin valves, depending on the properties of the under-layer. In our investigation, we have found that the magnetic behaviour of a Co layer depends mainly on the magnetization of the under-layer, whereas this is not the case for the NiFe layer.
Received: 18 May 2001
Revised: 09 September 2001
Accepted manuscript online:
PACS:
72.15.Gd
(Galvanomagnetic and other magnetotransport effects)
Fund: Project supported by the Shanghai Research Center for Applied Physics (Grant No. 99JC14003), and the Shanghai Research and Development Foundation for Application Materials (Grant No. 98006).
Cite this article:
Li Tie (李铁), Shen Hong-Lie (沈鸿烈) Magnetic behaviour investigation on symmetric spin valves of Co/Cu/NiFe and NiFe/Cu/Co 2002 Chinese Physics 11 54
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