Results 91 to 100 of about 13,580,399 (256)

Advanced Air Electrodes for Reversible Protonic Ceramic Electrochemical Cells: A Comprehensive Review

open access: yesAdvanced Materials, Volume 37, Issue 48, December 3, 2025.
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

open access: yes, 2015
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

open access: yesAdvanced Electronic Materials, Volume 11, Issue 21, December 17, 2025.
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

open access: yes, 2010
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

open access: yesScilight, 2022
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

open access: yesAdvanced Electronic Materials, Volume 11, Issue 20, December 3, 2025.
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

open access: yes, 2014
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

open access: yesMetalMat, Volume 2, Issue 4, December 2025.
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

open access: yesJournal of Materials Research and Technology
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

open access: yes, 2012
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

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