Magnetostrictive Fe-Co-B Alloys for High-frequency Sensor Applications. (27th July 2015)

• Record Type: Journal Article
• Authors: Sheng, Zhizhi; Zhang, Kewei; Cheng, Z.-Y.
• Is Part Of: ECS transactions. Volume 66:Number 38(2015)
• Page Start: 43
• Page End: 52
• Publication Date: 2015-07-27
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06638.0043ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Fe-rich Fe-Co-B magnetostrictive alloys have been considered as good high-frequency sensor materials. In this paper, Fe-rich Fe-Co-B thin films with the composition of Fe57 Co29 B14, Fe55 Co28 B17, Fe53 Co27 B20, Fe51 Co26 B23 and Fe49 Co25 B26 were fabricated. The structure, morphology, magnetic property and resonant behavior of the films were studied. Among the different compositions, Fe55 Co28 B17 has the highest Q value and relatively high amplitude, which is beneficial for sensor application. Au/Fe55 Co28 B17 /Au magnetostrictive particles (MSPs) were prepared by electrodeposition and microfabrication. The 500 μm×100 μm×6 μm MSP shows a resonant frequency of 3.320 MHz and Q value of 127. Fe-Co-B thin film sensors with good performance can be potentially utilized for high-frequency application and food safety detection.