@article{HAMAD2013, author = {Mahmoud Aly HAMAD}, title = {Theoretical investigations on electrocaloric properties of (111)-oriented PbMg1/3Nb2/3O3 single crystal}, year = {2013}, journal = {Journal of Advanced Ceramics}, volume = {2}, number = {4}, pages = {308-312}, keywords = {model, heat capacity change, polarization, electrocaloric (EC) effect, PbMg1/3Nb2/3O3 (PMN), entropy change}, url = {https://www.sciopen.com/article/10.1007/s40145-013-0076-7}, doi = {10.1007/s40145-013-0076-7}, abstract = {The electrocaloric (EC) effect accompanied with the ferroelectric to paraelectric phase transition in (111)-oriented PbMg1/3Nb2/3O3 (PMN) is investigated. It is shown that the largest change ΔT is 0.37 K in 3 kV/cm electric field shift near the Curie temperature of 221 K; that is, the cooling ΔT per unit field (MV/m) is 1.23×10-6 m·K/V. This value is significantly larger, and comparable with the value of 0.254×10-6 m·K/V for PbZr0.95Ti0.05O3 thin film under larger electric field shift ΔE = 30 kV/cm. Thus, the EC effect of (111) PMN single crystal provides cooling solutions at low temperatures, and opens more opportunities for practical application in cooling systems.} }