Results 91 to 100 of about 13,580,399 (256)
Reversible protonic ceramic electrochemical cells (R‐PCECs) face challenges from sluggish and unstable oxygen reduction and evolution reactions in the air electrode. This review discusses recent progress in triple‐conducting air electrodes, emphasizing mechanisms, performance factors, and design strategies, offering guidance for creating efficient and ...
Xi Chen +8 more
wiley +1 more source
Structure and Giant Inverse Magnetocaloric Effect of Epitaxial Ni-Co-Mn-Al Films
The structural, magnetic, and magnetocaloric properties of epitaxial Ni-Co-Mn-Al thin films with different compositions have been studied. The films were deposited on MgO(001) substrates by co-sputtering on heated substrates. All films show a martensitic
Behler, Anna +12 more
core +1 more source
Cooperative Atomic Mechanism of Emergent Tilted Magnetic Anisotropy
This study reveals a novel atomic mechanism behind magnetic anisotropy, where single‐ion anisotropy at dilute atomic sites establishes a long‐range anisotropic magnetic order via exchange interaction. The resulting exchange‐induced anisotropy contributes comparably to the single‐ion anisotropy, offering a promising strategy for engineering magnetic ...
Brajagopal Das +2 more
wiley +1 more source
Magnetocaloric effect and magnetic cooling near a field-induced quantum-critical point
The presence of a quantum critical point (QCP) can significantly affect the thermodynamic properties of a material at finite temperatures T. This is reflected, e.g., in the entropy landscape S(T, r) in the vicinity of a QCP, yielding particularly strong ...
A. Honecker +28 more
core +3 more sources
Iron nanoparticles boost magnetocaloric effect
Common materials could result in efficient, environmentally friendly refrigeration ...
openaire +1 more source
Tailoring Ni–Co–Mn–Sn Ribbons by Ge Doping for Enhanced Magnetocaloric Effect
Ni42Co8Mn39Sn11‐xGex (x = 1, 2 and 3) ribbons show tunable martensitic transformation and enhanced magnetocaloric performance through Ge substitution. Hysteresis is reduced with improved geometric compatibility between martensitic and austenitic phases, and the x = 2 sample exhibits an optimized magnetization change (ΔM) response, yielding an entropy ...
Ali Ghotbi Varzaneh +9 more
wiley +1 more source
Step-like features on caloric effects of graphenes
We considered a graphene nano-ribbon with a longitudinal electric field (along $x$ direction) and a transversal magnetic field (along $z$ direction), and then observe (i) the electrocaloric effect ruled by an applied magnetic field and (ii) the ...
Reis, M. S.
core +1 more source
Rare‐Earth‐Free Iron‐Based Permanent Magnets: Progress, Challenges, and Perspectives
Rare‐earth (RE)‐free iron‐based permanent magnets have gained attention as inexpensive, environmentally friendly alternatives to conventional RE‐based magnets. This review focuses on emerging Fe‐based hard magnets, discussing the fundamental principles governing their permanent magnetism and various examples of Fe‐based systems with emphasis on their ...
Sunbeom Park +4 more
wiley +1 more source
Magnetic properties and magnetocaloric effects of rare-earth based high-entropy amorphous microwires
The development of efficient and environmentally friendly solid-state refrigeration materials is a key issue in magnetic refrigeration technology. Rare-earth based high-entropy alloys with good magnetocaloric effect have been recently recognized as good ...
Shijie Wei +4 more
doaj +1 more source
Magnetocaloric materials: the search for new systems
The prospect of efficient solid state refrigeration at room temperature is driving research into magnetic cooling engine design and magnetic phase transition-based refrigerants.
Sandeman, Karl G.
core +1 more source

