Details

Autor(en) / Beteiligte

• Dmitrenko, V. V.
• Nyunt, Phyo Wai
• Vlasik, K. F.
• Grachev, V. M.
• Grabchikov, S. S.
• Muravyev-Smirnov, S. S.
• Novikov, A. S.
• Ulin, S. E.
• Uteshev, Z. M.
• Chernysheva, I. V.
• Shustov, A. E.

Titel

Electromagnetic shields based on multilayer film structures

Ist Teil von

• Bulletin of the Lebedev Physics Institute, 2015-02, Vol.42 (2), p.43-47

Ort / Verlag

Heidelberg: Allerton Press

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Electrodeposited multilayer-film electromagnetic shields are very promising for protecting various devices due to high shielding efficiency and the possibility of depositing on complex-shaped objects. In this communication, we present the results of measurements of the shielding efficiency of such shields. The shields represent alternating layers of materials with high magnetic permeability (Ni-Fe) and high conductivity (Cu). The maximum number of double layers is 45. It is shown that the shielding efficiency in the weak magnetic fields (0.1–0.2 mT) is 8–10; at higher magnetic field strengths (1.5–2.5 mT), it reaches 80–100. It is shown that the shielding factor increases with the number of layers in the shield at the same thickness of a soft magnetic material. A permalloy shield at the same amount of a soft magnetic material has an efficiency lower by a factor of 3–15 depending on the magnetic field strength.