Results 41 to 50 of about 229 (147)

Multisite Exchange-Enhanced Barocaloric Response in Mn_{3}NiN

Physical Review X, 2018
We study the barocaloric effect (BCE) in the geometrically frustrated antiferromagnet Mn_{3}NiN across the Néel transition temperature. Experimentally, we find a larger barocaloric entropy change by a factor of 1.6 than that recently discovered in the ...
David Boldrin, Eduardo Mendive-Tapia, Jan Zemen, Julie B. Staunton, Thomas Hansen, Araceli Aznar, Josep-Lluís Tamarit, Maria Barrio, Pol Lloveras, Jiyeob Kim, Xavier Moya, Lesley F. Cohen   +11 more
doaj   +1 more source

Colossal barocaloric effects near room temperature in plastic crystals of neopentylglycol [PDF]

Nature Communications, 2019
AbstractThere is currently great interest in replacing the harmful volatile hydrofluorocarbon fluids used in refrigeration and air-conditioning with solid materials that display magnetocaloric, electrocaloric or mechanocaloric effects. However, the field-driven thermal changes in all of these caloric materials fall short with respect to their fluid ...
Lloveras, P, Aznar, A, Barrio, M, Negrier, Ph, Popescu, C, Planes, A, Mañosa, L, Stern-Taulats, E, Avramenko, A, Mathur, ND, Moya, X, Tamarit, J-Ll   +11 more
openaire   +8 more sources

Reversible and irreversible colossal barocaloric effects in plastic crystals [PDF]

Journal of Materials Chemistry A, 2020
Colossal barocaloric effects were observed in four species of plastic crystals, and two displayed the reversibility required for cooling devices.
Araceli Aznar, Pol Lloveras, María Barrio, Philippe Negrier, Antoni Planes, Lluís Mañosa, Neil D. Mathur, Xavier Moya, Josep-Lluís Tamarit   +8 more
openaire   +5 more sources

Conventional and inverse barocaloric effects in ferroelectric NH4HSO4 [PDF]

Journal of Alloys and Compounds, 2019
Abstract In this study, the conventional and inverse barocaloric effects (BCE) in ferroelectric NH4HSO4 are reported. Maximum extensive and intensive BCE near order–disorder phase transition can be achieved at low pressure p ≤ 0.1 GPa. Large thermal expansion of the crystal lattice plays a very important role in the developing conventional ...
Mikhail V. Gorev, Ekaterina A. Mikhaleva, Igor N. Flerov, Evgeniy V. Bogdanov   +3 more
openaire   +2 more sources

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Flexoelectric Elastomer Enabled by Miscibility‐Driven Succinonitrile Molecular Rotation

Advanced Science, Volume 13, Issue 5, 27 January 2026.
A flexoelectric material platform is developed by embedding polar plastic crystals into polymer networks. By tuning the microstructure and preserving molecular rotation, strain gradient‐induced polarization is achieved. The resulting elastomer shows scalable and tunable electromechanical output under mechanical deformation, offering a new design route ...
Moonseok Jang, Bitgaram Kim, Ji‐Hun Seo   +2 more
wiley   +1 more source

Giant barocaloric effects at low pressure in ferrielectric ammonium sulphate [PDF]

Nature Communications, 2015
AbstractCaloric effects are currently under intense study due to the prospect of environment-friendly cooling applications. Most of the research is centred on large magnetocaloric effects and large electrocaloric effects, but the former require large magnetic fields that are challenging to generate economically and the latter require large electric ...
Lloveras Muntané, Pol Marcel, Stern Taulats, Enric, Barrio Casado, María del, Tamarit Mur, José Luis, Crossley, Sam, Li, Wei, Pomjakushin, Vladimir, Planes Vila, Antoni, Mañosa Carrera, Lluis, Mathur, N.D., Moya, Xavier   +10 more
openaire   +4 more sources

Colossal barocaloric effects in adamantane derivatives for thermal management

APL Materials, 2022
Plastic crystals are currently attracting interest because their solid-state caloric functionality could be used to tackle climate change in two critical areas: (i) more environmentally friendly cooling and heating driven by pressure and (ii) passive waste heat management.
Alejandro Salvatori, Philippe Negrier, Araceli Aznar, María Barrio, Josep Lluís Tamarit, Pol Lloveras   +5 more
openaire   +4 more sources

Direct Observation of Microstructure Effect on Martensitic Transformation in Multifunctional Ni–Co–Mn–Ti Alloy

Small Structures, Volume 7, Issue 1, January 2026.
Microstructure engineering is utilized to control martensitic transformation of all‐d‐metal alloys and is directly observed via in situ Lorentz transmission electron microscopy. The appearance of magnetic vortexes and its evolution not only highlight a new potential application scenario for Ni–Co–Mn–Ti alloy in magnetic storage but also reveal the ...
Kaiming Qiao, Ke Xu, Shulan Zuo, Caihua Gao, Haodong Chen, Ziyuan Yu, Hu Zhang   +6 more
wiley   +1 more source

Observing Transient Breathing States of MIL‐53 Homologues Using In Situ Single Crystal 3D Electron Diffraction

Small, Volume 21, Issue 50, December 17, 2025.
Temperature‐controlled in situ desolvation within the vacuum chamber of a dedicated electron diffractometer is shown to enable precise characterization of structural changes in flexible MOFs. Characterization of transient intermediate states of MIL‐53(Cr) and MIL‐53(Ga) at different levels of openness by 3D electron diffraction shows they undergo metal‐
Matthew Liddle, Celine Beck, Russell M. Main, Dominic Bara, Claire Wilson, Donald A. MacLaren, David Boldrin, Ross S. Forgan   +7 more
wiley   +1 more source