Results 31 to 40 of about 249 (137)

Giant barocaloric effect in neopentylglycol-graphene nanosheets composites with large thermal conductivity

Materials Research Letters, 2022
We report the enhancement of the thermal conductivity of neopentylglycol (NPG) by compositing it with graphene nanosheets (GPNs). Adding 50 wt% GPNs enhanced the thermal conductivity from 0.42 to 18.4 Wm−1K−1, and the barocaloric entropy change can still
Yao Liu, Houbo Zhou, Zhitong Xu, Die Liu, Jian Li, Fengxia Hu, Tianyu Ma   +6 more
doaj   +1 more source

Impact of Controlled Magneto-Structural Coupling in MnCoGe-Based Compounds on the Design of Multifunctional Materials for Technological Advances. [PDF]

Adv Sci (Weinh)
In this work, the authors systematically investigate how Ni substitution regulates the magneto‐structural coupling and their functional consequences in the MnCoGe‐based compounds. Geometric nonlinear theory analysis reveals that Ni modification change of magneto‐structural transition can alleviate the lattice incompatibility, thereby broadening the ...
Liu K, Hao X, Hutchison WD, Campbell SJ, Huang X, Zhang C, Li G, Miao X, Qian F, Wang J, Ren Q.   +10 more
europepmc   +2 more sources

Cross-coupling contribution to the isothermal entropy change in multicaloric materials

JPhys Energy, 2023
Multiferroic materials with strong coupling between different degrees of freedom are prone to exhibit giant multicaloric effects resulting from the application or removal of diverse external fields.
Lluís Mañosa, Enric Stern-Taulats, Adrià Gràcia-Condal, Antoni Planes   +3 more
doaj   +1 more source

Elucidation of barocaloric effect in spin crossover compounds

Acta Crystallographica Section A Foundations and Advances, 2022
The search for new efficient materials and refrigeration mechanisms is a key challenge toreplace the conventional vapor compression technology. An attractive alternative technologyuses the caloric refrigeration cycle, which is based on the adiabatic temperature and isothermalentropy change upon tuning an external parameter such as pressure, electric ...
Shahed, Hend, Sharma, N., Friese, K., Angst, M., Voigt, J., Persson, J., Törnroos, K. W., Chernyshov, D., Englert, U., Gildenast, H., Grzechnik, A.   +10 more
openaire   +2 more sources

Tunable barocaloric effects of two-dimensional hybrid perovskite through carbon chain lengths [PDF]

APL Materials
Organic–inorganic hybrid perovskites have recently emerged as a promising class of barocaloric materials. The entropy change in such materials mainly originates from the order-to-disorder phase transition of the organic carbon chains.
Changjiang Bao, Ziqi Guan, Haoyu Wang, Kun Zhang, Yanxu Wang, Bo Yang, Liang Zuo, Bing Li   +7 more
doaj   +1 more source

Barocaloric response of plastic crystal 2-methyl-2-nitro-1-propanol across and far from the solid-solid phase transition

JPhys Energy, 2023
Plastic crystals have emerged as benchmark barocaloric (BC) materials for potential solid-state cooling and heating applications due to huge isothermal entropy changes and adiabatic temperature changes driven by pressure.
Alejandro Salvatori, María Barrio, Philippe Negrier, Stéphane Massip, Michela Romanini, Araceli Aznar, Pol Lloveras, Josep-Lluís Tamarit   +7 more
doaj   +1 more source

Status and Prospect of Barocaloric Materials and Refrigeration Technology

Zhileng xuebao, 2022
Barocaloric materials are a class of materials in which pressure can induce solid-state phase transitions with latent heat release or absorption. An emergent barocaloric refrigeration technology has been established using barocaloric materials as the ...
Song Ruiqi, Zhang Zhidong, Li Bing
doaj  

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 ...
Alejandro Salvatori, Philippe Negrier, Araceli Aznar, María Barrio, Josep Lluís Tamarit, Pol Lloveras   +5 more
doaj   +1 more source

Neutron scattering of magnetocaloric and barocaloric materials [PDF]

SCIENTIA SINICA Physica, Mechanica & Astronomica, 2021
Caloric materials are systems that exhibit significant thermal effects at phase transitions induced by external fields like temperature, pressure, stress, magnetic fields, and so forth. They can be used for the solid-state refrigeration through a designated cooling cycle.
Bing LI, ZhiDong ZHANG
openaire   +1 more source

Spin Crossover Transition Driven by Pressure: Barocaloric Applications

Physica B: Condensed Matter, 2023
This article describes a mean-field theoretical model for Spin-Crossover (SCO) materials and explores its implications. It is based on a simple Hamiltonian that yields the high spin molar fraction as a function of temperature and pressure, as well as a temperature-pressure phase diagram for the SCO transition. In order to test the model, we apply it to
Mario Reis, Yongqiang Cheng, Antonio M. dos Santos   +2 more
openaire   +2 more sources