Results 71 to 80 of about 249 (137)

Switching Spin‐States: Spin Crossover vs. Coordination‐Induced Spin‐State Switching

European Journal of Inorganic Chemistry, Volume 27, Issue 35, December 12, 2024.
The total spin of a metal center can be switched in different ways. In this concept, the phenomenon spin crossover is compared with coordination‐induced spin‐state switching. The impact of the switching progress on luminescent properties is briefly discussed. Abstract Switchable molecular materials have continued to attract the interest of chemists and
Gerald Hörner, Birgit Weber
wiley   +1 more source

Features of the Behavior of the Barocaloric Effect near Ferroelectric Phase Transition Close to the Tricritical Point

Crystals, 2020
A detailed study of the effect of temperature and pressure on heat capacity, entropy and hysteresis phenomena near the ferroelectric phase transition in ammonium sulfate (AS) was performed.
E.A. Mikhaleva, I.N. Flerov, M.V. Gorev, V.S. Bondarev, E.V. Bogdanov   +4 more
doaj   +1 more source

Barocaloric effects at first-order phase transitions

, 2023
Current refrigeration devices, based on vapour-compression cycles, employ refrigerants such as HFCs, which exhibit a global warming potential a thousand times higher than the one produced by CO2,. Furthermore, the increasing middle class, associated with their refrigeration needs, urges for research in new environmentally friendly refrigerant ...
openaire   +4 more sources

Perspectives and Energy Applications of Magnetocaloric, Pyromagnetic, Electrocaloric, and Pyroelectric Materials

Advanced Energy Materials, Volume 14, Issue 39, October 18, 2024.
This perspective paper outlines a strategic roadmap for potential breakthroughs in solid‐state heating, cooling, and energy harvesting technologies by 2040, focusing on electrocaloric, pyroelectric, magnetocaloric, pyromagnetic, multicaloric, and multipyroic materials and their applications.
Katja Klinar, Jia Yan Law, Victorino Franco, Xavier Moya, Andrej Kitanovski   +4 more
wiley   +1 more source

Colossal barocaloric effect in GdCl3-doped H2O for sustainable cooling

NPG Asia Materials
H2O exists everywhere and its huge latent heat across ice-water phase transition empowers it to be a potential candidate for barocaloric refrigeration applications. Here we report a colossal and reversible barocaloric effect (BCE) in doped H2O, where the
Yue Kan, Feng-Xia Hu, Jian-Tao Wang, Jia-Zheng Hao, Qiang Li, Yi-Li Cao, Fei-Ran Shen, Wen Yin, Lun-Hua He, Bo Su, Jing Wang, Ji-Rong Sun, Zhi-Guo Chen, Chang-Qing Jin, Xian-Ran Xing, Yun-Zhong Chen, Tong-Yun Zhao, Wei Zhai, Bing-Bo Wei, Bao-Gen Shen   +19 more
doaj   +1 more source

Hysteresis in barocaloric materials

, 2017
Barocaloric materials show thermal changes near non-isochoric ferroic phase transitions [1]. These thermal changes are giant near first-order phase transitions where both the volume change and the entropy change across the transition are large. However, the existence of temperature and pressure hysteresis in these giant barocaloric materials is ...
Nataf, G.F., Stern-Taulats, E., Avramenko, A., Moya, X.   +3 more
openaire   +1 more source

Barocaloric effects in ferroelectrics

, 2017
Giant barocaloric effects driven by hydrostatic pressure have been suggested for cooling applications, but they have been traditionally seen only in a small range of magnetic materials that are relatively expensive. Here it will presented the pressure-dependent calorimetry data to demonstrate giant barocaloric effects in ferroelectric materials that ...
Stern-Taulats, E., Li, W., Avramenko, A., Crossley, S., Lloveras, P., Barrio, M., Tamarit, J.-., Planes, A., Manosa, L., Mathur, N.D., Moya, X.   +10 more
openaire   +1 more source

Lithium oxides LiRO2 (R = rare earth elements) with negative thermal expansion behavior and inverse barocaloric effect

Journal of Materials Research and Technology
Negative thermal expansion (NTE) defies the conventional wisdom of lattice dynamics and offers a novel way to control the expansion coefficient and address some challenges in modern science and technology.
Lin Qu, Muhammad Tahir Abbas, Kun Zhang, Zhe Zhang, Teng Yang, Zhao Zhang, Peng Liu, Ji Qi, Qing Guo, Wanwu Li, Xueting Zhao, Yanxu Wang, Zhidong Zhang, Bing Li   +13 more
doaj   +1 more source

Kinetic origin of hysteresis and the strongly enhanced reversible barocaloric effect by regulating the atomic coordination environment

NPG Asia Materials
Hysteresis is an inherent property of first-order transition materials that poses challenges for solid-state refrigeration applications. Extensive research has been conducted, but the intrinsic origins of hysteresis remain poorly understood.
Zi-Bing Yu, Hou-Bo Zhou, Feng-Xia Hu, Jian-Tao Wang, Fei-Ran Shen, Lun-Hua He, Zheng-Ying Tian, Yi-Hong Gao, Bing-Jie Wang, Yuan Lin, Yue Kan, Jing Wang, Yun-Zhong Chen, Ji-Rong Sun, Tong-Yun Zhao, Bao-Gen Shen   +15 more
doaj   +1 more source

Enhanced reversible barocaloric effect at low pressure in neopentyl plastic crystal solid solutions

Communications Materials
The discovery of colossal barocaloric effects in neopentyl glycol (NPG) makes plastic crystals promising candidates for solid-state refrigerants with lower environmental impact than vapour compression fluids.
Frederic Rendell-Bhatti, Melony Dilshad, Celine Beck, Markus Appel, Alba Prats, Eamonn T. Connolly, Claire Wilson, Lewis Giannelli, Pol Lloveras, Xavier Moya, David Boldrin, Donald A. MacLaren   +11 more
doaj   +1 more source