Results 31 to 40 of about 2,525 (200)

Electrocaloric and elastocaloric effects in soft materials [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
Materials with large caloric effect have the promise of realizing solid-state refrigeration which has potential to be more efficient and environmentally friendly compared with current cooling technologies. Recently, the focus of caloric effects investigations has shifted towards soft materials.
Maja Trček, Marta Lavrič, George Cordoyiannis, Boštjan Zalar, Brigita Rožič, Samo Kralj, Vassilios Tzitzios, George Nounesis, Zdravko Kutnjak   +8 more
openaire   +2 more sources

Direct measurement of giant electrocaloric effect in BaTiO3 multilayer thick film structure beyond theoretical prediction [PDF]

, 2010
The electrocaloric effect of BaTiO3 multilayer thick film structure was investigated by direct measurement and theoretical calculation. The samples were prepared by the tape-casting method, which had 180 dielectric layers with an average thickness of 1.4\
Bai, Yang, Shi, Sanqiang, Zheng, Guangping   +2 more
core   +2 more sources

Electrocaloric properties of ferroelectric-paraelectric superlattices controlled by the thickness of paraelectric layer in a wide temperature range

AIP Advances, 2014
As functions of the paraelectric layer thickness, misfit strain and temperature, the electrocaloric properties of ferroelectric-paraelectric superlattices are investigated using a time-dependent Ginzburg-Landau thermodynamic model.
D. C. Ma, S. P. Lin, W. J. Chen, Yue Zheng, Biao Wang, W. M. Xiong   +5 more
doaj   +1 more source

Electrocaloric devices part II: All-solid heat pump without moving parts

Journal of Advanced Dielectrics, 2020
Various designs have been introduced to build heat pumps using the electrocaloric effect (ECE). Each of all the current designs uses at least one moving part, which significantly reduces the reliability of the pump and adds complexities.
Farrukh Najmi, Jianping He, Lorenzo Cremaschi, Z.-Y. Cheng   +3 more
doaj   +1 more source

Large electrocaloric effect obtained in Ba(SnxTi1−x)O3 lead-free ceramics using direct and indirect measurements [PDF]

Journal of Advanced Dielectrics, 2018
The electrocaloric effect (ECE) in lead-free BaSnxTi1−xO3 (BSnT, x=0.05, 0.10 and 0.15) ceramics were investigated using a direct ECE measurement. Results indicate that the maximum ECE occurs near the Curie temperature and it slightly shifts towards high
Jiang Li, Dan-Dan Li, Biao Lu, Ying-Bang Yao, Tao Tao, Bo Liang, Wen-Hui Lu, Ge-Li Luo, Sheng-Guo Lu   +8 more
doaj   +1 more source

Solid-State Heating Using the Multicaloric Effect in Multiferroics

Magnetochemistry, 2021
The multicaloric effect is defined as the adiabatic reversible temperature change in multiferroic materials induced by the application of an external electric or magnetic field, and it was first theoretically proposed in 2012. The multicaloric effects in
Melvin M. Vopson, Yuri K. Fetisov, Ian Hepburn   +2 more
doaj   +1 more source

Enhanced Electrocaloric Effect in 0.73Pb(Mg_1/3Nb_2/3)O₃-0.27PbTiO₃ Single Crystals via Direct Measurement

Crystals, 2020
Electrocaloric properties of [110] and [111] oriented 0.73Pb(Mg1/3Nb2/3)O3-0.27PbTiO3 single crystals were studied in the temperature range of 293–423 K. The Maxwell relations and the Landau–Ginsburg–Devonshire (LGD) phenomenological theory were employed
Biao Lu, Xiaodong Jian, Xiongwei Lin, Yingbang Yao, Tao Tao, Bo Liang, Haosu Luo, Sheng-Guo Lu   +7 more
doaj   +1 more source

Enhancement of the electrocaloric effect in the 0.4BCZT-0.6BTSn ceramic synthesized by sol-gel route

Materials Research Express, 2023
The lead-free ferroelectric 0.4Ba _0.85 Ca _0.15 Zr _0.10 Ti _0.90 O _3 –0.6BaTi _0.89 Sn _0.11 O _3 (0.4BCZT–0.6BTSn) ceramics were successfully prepared by the sol–gel process.
S Khardazi, H Zaitouni, A Neqali, D Mezzane, M Amjoud, Z Abkhar, S Lyubchyk, B Rožič, S Lyubchyk, Z Kutnjak, I Lukyanchuk   +10 more
doaj   +1 more source

A giant electrocaloric effect of a Pb0.97La0.02(Zr0.75Sn0.18Ti0.07)O3 antiferroelectric thick film at room temperature [PDF]

, 2014
A 2-µm-Pb0.97La0.02(Zr0.75Sn0.18Ti0.07)O3 (PLZST) antiferroelectric (AFE) thick film with tetragonal structure was deposited on LaNiO3/Si (100) substrates via a sol-gel technique.
Hao, Xihong, Zhang, Qi, Zhao, Ye
core   +1 more source

Giant electrocaloric effect in thin film Pb Zr_0.95 Ti_0.05 O_3

, 2005
An applied electric field can reversibly change the temperature of an electrocaloric material under adiabatic conditions, and the effect is strongest near phase transitions.
Mathur, N. D., Mischenko, A., Scott, J. F., Whatmore, R. W., Zhang, Q.   +4 more
core   +1 more source