Miniaturized magnetostrictive delay line arrangement using multilayer-likestructure

In this paper it is reported a special technological solution to improve th e performance and to simplify the fabrication process of the miniaturized m agnetostrictive delay line (MDL) obtained by thin films technology. In orde r to increase the sensitivity level without adding new difficulties in the reliability of the sensing element, we conceived and realized a new configu ration of miniaturized MDL using a magnetoresistive sensing three-layered s tructure. According to this configuration, MDL arrangement can be miniaturi zed, without the use of the receiving coil fabricated by thin film technolo gy and photolithographic techniques, allowing thus a simple fabrication pro cess and a high output signal level. (C) 2001 Elsevier Science B.V. All rig hts reserved.