SAW-based magnetic sensors enable the remote interrogation of local magnetic fields. Designs utilizing a magnetostrictive delay line or a magnetic IDT have been proposed, showing a large sensing range with a rather low sensitivity. Another concept, employing a SAW device loaded with a GMI element, has been shown to provide higher sensitivity. However, the GMI element is a microwire structure, w...

A new class of vibration energy harvester based on magnetostrictive material (MsM), Metglas 2605SC, is designed, developed and tested. It contains two submodules: an MsM harvesting device and an energy harvesting circuit. Compared to piezoelectric materials, the Metglas 2605SC offers advantages including higher energy conversion efficiency, longer life cycles, lack of depolarization and higher ...

A variety of extremely high-sensitivity, room-temperature magnetic-field sensors have been fabricated and tested using single-mode fibers in conjunction with highly magnetostrictive metallic glasses. Minimum detectable fields of 5 x 10(-9) Oe/m fiber are reported. The typical characteristics of the fiber magnetometers are summarized.