Results 41 to 50 of about 249 (137)

Enhancing the Heat Transfer in an Active Barocaloric Cooling System Using Ethylene-Glycol Based Nanofluids as Secondary Medium

open access: yesEnergies, 2019
Barocaloric cooling is classified as environmentally friendly because of the employment of solid-state materials as refrigerants. The reference and well-established processes are based on the active barocaloric regenerative refrigeration cycle, where the
Ciro Aprea   +3 more
doaj   +1 more source

Improving barocaloric properties by tailoring transition hysteresis in Mn3Cu Sn N antiperovskites

open access: yesJPhys Energy, 2023
The magnetically frustrated manganese nitride antiperovskite family displays significant changes of entropy under changes in hydrostatic pressure near a first-order antiferromagnetic to paramagnetic phase transition that can be useful for the emerging ...
Frederic Rendell-Bhatti   +9 more
doaj   +1 more source

Low-pressure-induced giant barocaloric effect in an all-d-metal Heusler Ni35.5Co14.5Mn35Ti15 magnetic shape memory alloy

open access: yesAPL Materials, 2020
The clean and energy-efficient solid-state refrigeration based on magnetostructural phase transformation is a promising alternative technology for vapor-compression refrigeration.
Zhiyang Wei   +7 more
doaj   +1 more source

Large barocaloric effects in thermoelectric superionic materials [PDF]

open access: yesPhysical Review Materials, 2020
We predict the existence of large barocaloric effects above room temperature in the thermoelectric fast-ion conductor ${\mathrm{Cu}}_{2}\mathrm{Se}$ by using classical molecular dynamics simulations and first-principles computational methods. A hydrostatic pressure of 1 GPa induces large isothermal entropy changes of $|\mathrm{\ensuremath{\Delta}}S ...
Jie Min   +2 more
openaire   +1 more source

Barocaloric effect in the magnetocaloric prototype Gd5Si2Ge2

open access: yesApplied Physics Letters, 2012
We report on calorimetric measurements under hydrostatic pressure that enabled us to determine the barocaloric effect in Gd5Si2Ge2. The values for the entropy change for moderate pressures compare favourably to those corresponding to the magnetocaloric effect in this compound.
Yuce, Suheyla   +9 more
openaire   +2 more sources

Giant reversible barocaloric response of (MnNiSi)1−x(FeCoGe)x (x = 0.39, 0.40, 0.41)

open access: yesAPL Materials, 2019
MnNiSi-based alloys and isostructural systems have traditionally demonstrated impressive magnetocaloric properties near room temperature associated with a highly tunable first-order magnetostructural transition that involves large latent heat.
Pol Lloveras   +6 more
doaj   +1 more source

Caloric effects of quantum materials: An outlook

open access: yesPhysics Open, 2020
Solid-state cooling is an emerging technology embracing cryogenic and near room temperature devices. For further developments of this machinery, prototypes and caloric materials must be optimized in order to obtain a better final result than the well ...
Mario S. Reis, Ning Ma
doaj   +1 more source

Martensitic Transformation and Barocaloric Effect in Co-V-Ga-Fe Paramagnetic Heusler Alloy

open access: yesMetals, 2022
In the present study, polycrystalline Co50V34Ga16−xFex (1≤x≤2) quaternary Heusler alloys were fabricated by the arc-melting method. It was found that they undergo a paramagnetic martensitic transformation (MT) from the L21-type cubic austenitic structure
Jie Liu   +7 more
doaj   +1 more source

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

open access: yesPhysical 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   +11 more
doaj   +1 more source

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