biostudies-literatureDuan ZNational Natural Science Foundation of Chinae15679https://www.ebi.ac.uk/biostudies/studies/S-EPMC12786290biostudies-literatureUnknown13(2)Achieving high and stable permittivity is essential for developing ultra-thin and wide-temperature adaptive microwave-absorbing materials (MAMs). Conventional high-permittivity MAMs suffer from temperature-sensitive permittivity and cannot achieve stable microwave-absorbing performance at fluctuating temperatures, while temperature-insensitive MAMs exhibit low permittivity that severely restricts ultra-thin designs. Herein, a double-layer La₂Zr₂O₇/Eu₂Zr₂O₇ architecture is employed, with rare-earth zirconates featuring with one-eighth anion-site vacancies, as a promising candidate for ultra-thin wide-temperature adaptive MAMs. The established balance between thermionic relaxation polarization and Lorentz dielectric resonance-Advanced science (Weinheim, Baden-Wurttemberg, Germany)Ultra-Thin Oxide-Based Double-Layer Architecture Achieves Wide-Temperature Broadband Microwave Absorption by Synergizing Lorentz Resonance and Thermionic Transport.PMC12786290523882015230520252271167U23A601452473296Duan ZWan CLi YZhao BGao LZhang XYuan LCui RfalseUltra-Thin Oxide-Based Double-Layer Architecture Achieves Wide-Temperature Broadband Microwave Absorption by Synergizing Lorentz Resonance and Thermionic Transport.Achieving high and stable permittivity is essential for developing ultra-thin and wide-temperature adaptive microwave-absorbing materials (MAMs). Conventional high-permittivity MAMs suffer from temperature-sensitive permittivity and cannot achieve stable microwave-absorbing performance at fluctuating temperatures, while temperature-insensitive MAMs exhibit low permittivity that severely restricts ultra-thin designs. Herein, a double-layer La₂Zr₂O₇/Eu₂Zr₂O₇ architecture is employed, with rare-earth zirconates featuring with one-eighth anion-site vacancies, as a promising candidate for ultra-thin wide-temperature adaptive MAMs. The established balance between thermionic relaxation polarization and Lorentz dielectric resonance-2026-01-01T00:00:00Z2026 Jan2026-06-06T11:37:01.93Z2026-05-30T03:07:24.675ZS-EPMC127862904117867210.1002/advs.202515679