Semax · research summary

Multi-Layer Magnetic Shields Based on Fe-Based Nanocrystalline and Co-Based Amorphous Ribbons.

Materials (Basel, Switzerland) · 2026. Summary drawn from the study's full text. Each statement is followed by the exact sentence it comes from. This is a research summary, not medical advice.

Study type

Experimental and computational study on multi-layer composite magnetic shielding structures
“We constructed a multi-layer composite magnetic shield composed of Fe-based nanocrystalline (FN) and Co-based amorphous (CA) ribbons, and focused on the influence of the number of layers and their arrangement on the shielding effectiveness (SE).”

Subjects

Fe-based nanocrystalline (FN) and Co-based amorphous (CA) ribbons arranged in multi-layer cylindrical shields
“Utilizing Fe-based nanocrystalline (FN) ribbons and 6025Z Co-based amorphous (CA) ribbons [36], we constructed multi-layer cylindrical shields with varying arrangement (1~3 layers).”

Sample size

Multi-layer shields with 1 to 3 layers of varying material combinations
“we constructed multi-layer cylindrical shields with varying arrangement (1~3 layers).”

Reported findings

Increasing the number of shield layers improves the maximum shielding effectiveness (SEmax) and broadens the working range (WWR).
“Increasing the number of shield layers improves the maximum value of SE (SEmax) and significantly broadens the working range (WWR).”
Co-based amorphous (CA) exhibits higher shielding performance in weak magnetic fields, while Fe-based nanocrystalline (FN) is better in strong magnetic fields.
“In a weak magnetic field, CA exhibits higher shielding performance, whereas FN is better in a strong magnetic field.”
The FN/FN/CA combination achieves a SEmax of 51.7 dB within a WWR of 674.3 A/m, showing a 14.4% improvement in SE compared to the FN/FN/FN combination.
“The FN/FN/CA combination (FN is closer to the field source) exhibits an SEmax of up to 51.7 dB within a WWR of 674.3 A/m, and demonstrates a 14.4% improvement in SE compared to FN/FN/FN combination across the entire tested magnetic field range.”

Source: PubMed 42195624 · DOI 10.3390/ma19101986 · all study summaries

Study type

Experimental and computational study on multi-layer composite magnetic shielding structures

“We constructed a multi-layer composite magnetic shield composed of Fe-based nanocrystalline (FN) and Co-based amorphous (CA) ribbons, and focused on the influence of the number of layers and their arrangement on the shielding effectiveness (SE).”

Reported findings

Increasing the number of shield layers improves the maximum shielding effectiveness (SEmax) and broadens the working range (WWR).

“Increasing the number of shield layers improves the maximum value of SE (SEmax) and significantly broadens the working range (WWR).”

Co-based amorphous (CA) exhibits higher shielding performance in weak magnetic fields, while Fe-based nanocrystalline (FN) is better in strong magnetic fields.

“In a weak magnetic field, CA exhibits higher shielding performance, whereas FN is better in a strong magnetic field.”

The FN/FN/CA combination achieves a SEmax of 51.7 dB within a WWR of 674.3 A/m, showing a 14.4% improvement in SE compared to the FN/FN/FN combination.

“The FN/FN/CA combination (FN is closer to the field source) exhibits an SEmax of up to 51.7 dB within a WWR of 674.3 A/m, and demonstrates a 14.4% improvement in SE compared to FN/FN/FN combination across the entire tested magnetic field range.”