High frequency magnetic properties of polymer-bonded Tb-Dy-Ho-Fe fiber composites

ABSTRACT

In order to improve the high-frequency performance of magnetostrictive composites, the work fabricated a polymer-bonded Tb-Dy-Ho-Fe fiber composite. Its magnetic properties were investigated and compared with that of polymer-bonded Tb-Dy-Fe fiber composite. An experimental system was setup to measure the major and minor hysteresis loops of the given magnetostrictive composites at different frequencies. The results showed that Tb-Dy-Ho-Fe fiber composites demonstrates superior magnetic properties, such as lower saturation magnetic field (220 kA/m), smaller coercivity force (5 kA/m) and less dynamic magnetic loss (115 W/m3 at 20 kHz, only 60% of Tb-Dy-Fe fiber composites), compared with Tb-Dy-Fe fiber composites. The proposed composite is suitable for the application of sensing and ultrasonic.

KEYWORDS:

• Tb-Dy-Ho-Fe alloy
• magnetostrictive fiber composites
• hysteresis
• high-frequency magnetic properties

Acknowledgment

The authors would like to thank Professor Menglun Tao from Wuhan University of Technology for his helpful suggestions.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (51777053), Jiangxi University Science &Technology Landing Project (KJLD14096), Natural Science Foundation of Hebei Province (E2016202034), Science & Technology Project of Jiangxi Province Education Department (GJJ161105).