TY - JOUR
T1 - Mn-Mo ferrites doped with rare earth element for enhancing EMI shielding
T2 - A DFT calculation and experimental comparison
AU - Shakir, HM Fayzan
AU - Zhao, Tingkai
AU - Farooq, M. Umar
AU - Jalil, Abdul
N1 - Publisher Copyright:
© 2024
PY - 2025/7/20
Y1 - 2025/7/20
N2 - To develop advanced electromagnetic interference (EMI) shielding materials, Mn-Mo ferrites doped with Ce were investigated for their electric, dielectric, and magnetic properties. Using Density Functional Theory (DFT) calculation, the effect of doping different elements was evaluated in ferrite structures to optimize the performance of these ferrites. The calculated results revealed that the Mn-Mo ferrites which combined with Ce significantly lowered the bandgap and increased the total density of states (TDOS), leading to improved electrical conductivity. Additionally, the dielectric constant (ε') dielectric loss (ε'') and AC conductivity were found to be highest in the Mn-Mo-Ce-doped ferrites, contributing to superior EMI shielding effectiveness (SE), particularly in the low-frequency range. Mn-Mo-Ce doped ferrite was synthesized using auto-combustion method and evaluated for the EMI SE. The experimental and DFT calculated EMI SE both are close to 55 dB. This computational and experimental analysis, supported by structural and electronic localization function (ELF) mapping, underscores the potential of Mn-Mo-Ce-doped ferrites as highly efficient materials for EMI shielding in advanced electronic applications.
AB - To develop advanced electromagnetic interference (EMI) shielding materials, Mn-Mo ferrites doped with Ce were investigated for their electric, dielectric, and magnetic properties. Using Density Functional Theory (DFT) calculation, the effect of doping different elements was evaluated in ferrite structures to optimize the performance of these ferrites. The calculated results revealed that the Mn-Mo ferrites which combined with Ce significantly lowered the bandgap and increased the total density of states (TDOS), leading to improved electrical conductivity. Additionally, the dielectric constant (ε') dielectric loss (ε'') and AC conductivity were found to be highest in the Mn-Mo-Ce-doped ferrites, contributing to superior EMI shielding effectiveness (SE), particularly in the low-frequency range. Mn-Mo-Ce doped ferrite was synthesized using auto-combustion method and evaluated for the EMI SE. The experimental and DFT calculated EMI SE both are close to 55 dB. This computational and experimental analysis, supported by structural and electronic localization function (ELF) mapping, underscores the potential of Mn-Mo-Ce-doped ferrites as highly efficient materials for EMI shielding in advanced electronic applications.
KW - Cerium
KW - Density Functional Theory (DFT)
KW - Doping
KW - EMI shielding
KW - Ferrites
UR - http://www.scopus.com/inward/record.url?scp=85215083684&partnerID=8YFLogxK
U2 - 10.1016/j.jmst.2024.11.015
DO - 10.1016/j.jmst.2024.11.015
M3 - 文章
AN - SCOPUS:85215083684
SN - 1005-0302
VL - 224
SP - 183
EP - 190
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
ER -