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A method is described for optimizing the coercivity keeping the magnetostriction value constant in electrodeposited CoP multilayers for their applications in magnetoelastic magnetic sensors. The results show a saturation magnetostriction in between the values of the magnetostriction of the two materials and independent of the thickness of the layers.

In this work, we report the magnetic properties of sputtered Permalloy (Py: Ni80Fe20)/molybdenum (Mo) multilayer thin films. We show that it is possible to maintain a low coercivity and a high permeability in thick sputtered Py films when reducing the out-of-plane component of the anisotropy by inserting thin film spacers of a non-magnetic material like Mo. For these kind of multilayers, we have found coercivities which are close to those for single layer films with no out-of-plane anisotropy. The coercivity is also dependent on the number of layers exhibiting a minimum value when each single Py layer has a thickness close to the transition thickness between Neel and Bloch domain walls. [ABSTRACT FROM AUTHOR]