Evaluation of the reliability of the measurement of key magnetocaloric properties: A round robin study of La(Fe,Si,Mn)Hδ conducted by the SSEEC consortium of European laboratories

Specific heat and entropy change at the first order phase transition of La(Fe-Mn-Si)13-H compounds

“…The substitution of Fe by Mn lowers the transition temperature T t thereby permitting a fine tuning around room temperature [7][8][9] . The system with Mn is also particularly interesting because it shows a trend in which the transition passes from fully first order and hysteretic at low Mn to almost second order with no hysteresis at high Mn.…”

Direct magnetocaloric characterization and simulation of thermomagnetic cycles

“…[10][11][12][13][14][15] Therefore, the need for novel thermal devices has been continuously pushing scientists to carefully analyze the thermal behavior of magnetic critical processes. During the last years the realization of several in-field calorimetric techniques [16][17][18][19][20][21][22][23][24][25][26][27][28][29] contributed both to a better understanding of the thermomagnetic behavior of the most promising compounds showing first order phase transitions and to encourage the development of new materials. 15,30 Thus, the study of the time and frequency dependence of the MCE constitutes the next step to be taken.…”

“…15,30 Thus, the study of the time and frequency dependence of the MCE constitutes the next step to be taken. This means that beyond a complete thermomagnetic characterization (i.e., comparing c p (T, H), s T (T, H), and T ad (T, H) values measured using different calorimetric techniques as well as magnetometry), 28,29,31,32 the analysis of the MCE under operating conditions is essential to bridge material science and device engineering. Such technique should provide insightful information on the impact of fatigue effects and thermal transport-properties on MCE materials.…”

On the correct estimation of the magnetic entropy change across the magneto-structural transition from the Maxwell relation: Study of MnCoGeBx alloy ribbons

“…Among them, Gd 5 (Si x Ge 1-x ) 4 [1,16], La(Si,Fe,X) 13 (X= Co, Mn) [17,18], MnFe(P,X) with X = As, Ge, Si [6,19], non-stoichiometric NiMn-X-based Heusler-type (X= Ga, Sn, In, Sb) [20][21][22][23][24][25][26] or Mn(Co,Ni)Ge-based alloys [27][28][29][30][31][32][33][34][35][36][37]. It is worth noting that MnCoGe-based alloys have one of the largest contributions of S st to S T , giving rise to one of the highest reported GMCE in terms of the maximum value of S T [14].…”