Abstract
An ultrathin MgO/Fe seed layer was introduced to manipulate the crystal orientation and crystallinity of Fe/MgO/Fe trilayers. The crystallographic properties and magnetic properties of the trilayer are investigated. It is concluded that the texture of the MgO layer is strongly dependent on the texture of the Fe layer. (001) oriented Fe layer can assist the growth of (001) oriented MgO barrier upon annealing. A 0.5 nm MgO seed layer can introduce (001) orientation in the following Fe layer. It is also found that the crystal orientation of the Fe/MgO/Fe trilayer is independent of the initial Fe seed layer thickness. However, the crystallinity of both the Fe layer and the MgO layer is dependent on the initial Fe seed layer.
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