Enhanced barocaloric effect produced by hydrostatic pressure-induced martensitic transformation for Ni44.6Co5.5Mn35.5In14.4 Heusler alloy

Giant barocaloric effect in all- d -metal Heusler shape memory alloys

“…Data correspond to the first application (or first removal) of pressure, and are extracted from refs [25][26][27][28][29][30][31][32][33][34]. materials[25][26][27][28][29][30][31][32][33][34] . Because reversible values (upon repeatedly applying and removing pressure) are not reported for many of the materials, our comparison will be based on entropy and temperature values for the first application and first removal of pressure.…”

Structure and thermal property relationships in the thermomaterial di-n-butylammonium tetrafluoroborate for multipurpose cooling and cold-storage

“…In the recent years, barocaloric materials have been demonstrated to exhibit very large thermal changes, some of them as large as DS $ 100 J K −1 kg −1 (the same order of magnitude as refrigerant gases) under the application of low/ moderate pressures of p = 70-1000 bar (while refrigerant gases normally operate at p # 150 bar). [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] These barocaloric materials belong to many different families of compounds, such as ammonium or phosphate salts, [35][36][37][38][39][40][41][42][43] superionic conductors, 44,45 spin crossover materials, [46][47][48][49][50][51][52] n-alkanes, 53 hybrid organic-inorganic materials, [54][55][56][57][58][59][60][61] organic plastic crystals [62][6...…”

Giant baroresistance effect with no hysteresis loss realized by a non-spontaneous martensitic transformation in Ni43Co7Mn35In15 alloy

“…So far, many magnetic functional properties associated with the magnetic field-driven MT have been continuously reported in Ni-Co(Fe)-Mn-X alloys, such as metamagnetic shape memory effect [3,4], magnetocaloric effect [6,7], magnetoresistance effect [5], and magnetically superelastic effect [8,9]. Furthermore, because of a dramatical difference in unit-cell volume between these two phases, the mechanical field-driven MT has been also observed in them, which brings about various excellent pressure-sensitive properties including the barocaloric/baroresistance effects induced by an applied hydrostatic pressure [10][11][12], and elastocaloric/piezoresistance effects induced by a uniaxial stress [13][14][15][16]. As is well-known, the irreversibility of the MT with respect to the external fields for Ni-Mn-based alloy system is one of the difficult challenges that would limit its application as the functional materials.…”