Herein, high-entropy ferrites (HEFs) represent a transformative frontier in solid-state chemistry and materials physics, shifting design paradigms from conventional mono- or co-substituted ceramics toward multi-component, single-phase solid solutions. Stabilized by a massive configurational entropy (ΔS_conf > 1.5 R), these systems incorporate five or more principal cations into a single crystalline matrix, such as cubic spinel (Fd$\overline{3}$m), perovskite, or hexagonal structures. This comprehensive review systematically evaluates recent breakthroughs in HEF design, tracing the continuous lineage from advanced synthesis methodologies, including modified Pechini sol–gel and hydrothermal routes, to local coordination environments and macroscopic functional expressions. We detail how intense local lattice distortions and polyhedral buckling alter metal–oxygen ligand bond parameters, disrupting traditional collinear A-O-B superexchange pathways to induce quantum magnetic frustration, low-temperature spin-glass behavior, and spontaneous exchange bias effects. Beyond fundamental physics, this work highlights the multi-cation “cocktail effect” across cutting-edge applications, emphasizing its role in high-frequency electromagnetic interference (EMI) shielding, multi-redox heterogeneous catalysis, and high-capacity electrochemical energy storage. Finally, we address current computational bottlenecks in Density Functional Theory (DFT+U) simulations and propose a roadmap for accelerating phase stability predictions and magnetic footprint tuning through the integration of high-throughput workflows and closed-loop, data-driven machine learning architectures. By bridging the gap between thermodynamic theory and targeted application, this review provides a foundational framework for the next generation of entropy-stabilized functional devices.

Soil salinization represents a growing threat to agricultural productivity, particularly in arid and semi-arid regions where evaporation-driven salt accumulation forms surface crusts that inhibit further moisture transport. This study introduces a novel passive and low-cost remediation strategy consisting of vertically inserted fired-clay ceramic sheets that function as capillary wicks, enabling the simultaneous enhancement of evaporative flux and salt removal from saline-irrigated soils. Controlled laboratory experiments were conducted on soil columns irrigated with saline water (180 and 250 g/L) and equipped with one to four ceramic sheets (porosity = 0.33). Evaporation tests showed that saline soil without inserts lost 34 g of water over 120 h, compared to 47 g with one ceramic sheet and up to 68 g with four sheets. Salt extraction increased similarly, reaching 59% removal with four sheets versus 20% with a single sheet. Most extraction occurred within the first 72 h, after which performance declined due to salt crystallization within ceramic pores. These findings establish that vertically inserted fired-clay ceramics represent a viable, scalable, and low-cost technology for passive soil desalinization, with optimal operational cycles of 72–120 h recommended before periodic sheet replacement.