TY - JOUR
T1 - A universal metric for ferroic energy materials
AU - Brück, Ekkes
AU - Yibole, Hargen
AU - Zhang, Lian
PY - 2016/8/13
Y1 - 2016/8/13
N2 - After almost 20 years of intensive research on magnetocaloric effects near room temperature, magnetic refrigeration with first-order magnetocaloric materials has come close to real-life applications. Many materials have been discussed as potential candidates to be used in multicaloric devices. However, phase transitions in ferroic materials are often hysteretic and a metric is needed to estimate the detrimental effects of this hysteresis. We propose the coefficient of refrigerant performance, which compares the net work in a reversible cycle with the positive work on the refrigerant, as a universal metric for ferroic materials. Here, we concentrate on examples from magnetocaloric materials and only consider one barocaloric experiment. This is mainly due to lack of data on electrocaloric materials. It appears that adjusting the field-induced transitions and the hysteresis effects can minimize the losses in first-order materials. This article is part of the themed issue 'Taking the temperature of phase transitions in cool materials'.
AB - After almost 20 years of intensive research on magnetocaloric effects near room temperature, magnetic refrigeration with first-order magnetocaloric materials has come close to real-life applications. Many materials have been discussed as potential candidates to be used in multicaloric devices. However, phase transitions in ferroic materials are often hysteretic and a metric is needed to estimate the detrimental effects of this hysteresis. We propose the coefficient of refrigerant performance, which compares the net work in a reversible cycle with the positive work on the refrigerant, as a universal metric for ferroic materials. Here, we concentrate on examples from magnetocaloric materials and only consider one barocaloric experiment. This is mainly due to lack of data on electrocaloric materials. It appears that adjusting the field-induced transitions and the hysteresis effects can minimize the losses in first-order materials. This article is part of the themed issue 'Taking the temperature of phase transitions in cool materials'.
KW - Coefficient of refrigerant performance
KW - Fe2P
KW - Magnetocaloric
KW - Reversible cycle
UR - http://resolver.tudelft.nl/uuid:46615581-9da7-4149-ae91-d5c91c59225d
UR - http://www.scopus.com/inward/record.url?scp=84978204612&partnerID=8YFLogxK
U2 - 10.1098/rsta.2015.0303
DO - 10.1098/rsta.2015.0303
M3 - Article
AN - SCOPUS:84978204612
SN - 1364-503X
VL - 374
JO - Royal Society of London. Philosophical Transactions A. Mathematical, Physical and Engineering Sciences
JF - Royal Society of London. Philosophical Transactions A. Mathematical, Physical and Engineering Sciences
IS - 2074
M1 - 20150303
ER -