Local Charge Regulation in Selenides via High‐Entropy Engineering to Boost Electromagnetic Wave Absorption DOI Open Access

Zhikai Yan,

Lei Wang,

Yiqian Du

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Abstract Local charge modulation is an effective method to improve the polarization loss and electromagnetic (EM) absorption characteristics. However, use of conventional means (doping, defects, heterojunction surfaces) remains singular limited in achieving local modulation. Surprisingly, lattice distortions induced by high‐entropy engineering can intrinsically regulate states EM wave performances. Herein, a series selenides with enhanced configuration entropy are designed prepared capacity. Due different radii mixed ions Jahn‐Teller distortion effect, effectively modulated presence defects strong inside lattice. Uneven distribution at formation boundaries promotes defect‐induced interface polarization, respectively. Compared single NiSe 2 , (NiFeCuCoMn)Se value 1.53R has more severe suitable impedance matching properties, exhibiting good properties both intensity respond frequency. Tailoring density via strategy paves new way for high‐performance materials.

Language: Английский

Local Charge Regulation in Selenides via High‐Entropy Engineering to Boost Electromagnetic Wave Absorption DOI Open Access

Zhikai Yan,

Lei Wang,

Yiqian Du

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Abstract Local charge modulation is an effective method to improve the polarization loss and electromagnetic (EM) absorption characteristics. However, use of conventional means (doping, defects, heterojunction surfaces) remains singular limited in achieving local modulation. Surprisingly, lattice distortions induced by high‐entropy engineering can intrinsically regulate states EM wave performances. Herein, a series selenides with enhanced configuration entropy are designed prepared capacity. Due different radii mixed ions Jahn‐Teller distortion effect, effectively modulated presence defects strong inside lattice. Uneven distribution at formation boundaries promotes defect‐induced interface polarization, respectively. Compared single NiSe 2 , (NiFeCuCoMn)Se value 1.53R has more severe suitable impedance matching properties, exhibiting good properties both intensity respond frequency. Tailoring density via strategy paves new way for high‐performance materials.

Language: Английский

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