Skip to Main Content
Advanced Materials for Electromagnetic Shielding
book

Advanced Materials for Electromagnetic Shielding

by Maciej Jaroszewski, Sabu Thomas, Ajay V. Rane
November 2018
Intermediate to advanced content levelIntermediate to advanced
464 pages
18h 30m
English
Wiley
Content preview from Advanced Materials for Electromagnetic Shielding

6Magnetic Field Shielding

Qiang Zhang

Department of Materials Science, Key Laboratory of Advanced Structure‐Function Integrated Materials and Green Manufacturing Technology, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China

6.1 Introduction

A magnetic field exists in any place of the Earth. It includes the weak geomagnetic field and the high intensity field generated by high power equipment, electronic devices, and power transmissions. The magnetic field will disturb sensitive electrical and high‐accuracy electronic sensors [1], or even cause possible health hazards for humans. It has been reported that cancer mortality grows slightly with increasing magnetic field exposure [2]. Therefore, magnetic field shielding, especially for the low frequency and static magnetic field, has become a serious problem. It is necessary to build magnetic shields either for the sources or for objects that should be protected.

On the one hand, equipment that is sensitive to magnetic fields requires protection from external magnetic fields, such as the geomagnetic field, to ensure optimal operation. The intensity of the geomagnetic field is very low, with a magnitude ranging from 2.5 × 10−5 to 6.5 × 10−5 T at the Earth's surface [3]. For sensitive electrical and high‐accuracy electronic sensors, their tolerance to the environmental magnetic field is limited, and even a field like the geomagnetic field may cause disturbance and disablement. Consequently, ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Electromagnetic Field Theory and Transmission Lines

Electromagnetic Field Theory and Transmission Lines

G. S. N. Raju

Publisher Resources

ISBN: 9781119128618Purchase book