Table 2 Comparison of MCE-related properties in HoB2 and other materials exhibiting large magnetocaloric response around the liquefaction temperature of hydrogen for a field change of 5 T.

From: Machine-learning-guided discovery of the gigantic magnetocaloric effect in HoB2 near the hydrogen liquefaction temperature

Materials

Tmag (K)

|ΔSM | (J kg–1 K−1)

|ΔSM | (J cm–3 K–1)

ΔTad (K)

Transition type

References

HoB2

15

40.1

0.35

12

SOPT

This work

EuS

18.2

37

0.21

10.4

SOPT

42

ErAl2

14

36

0.22

11.1

SOPT

43

ErCo2

30

36

0.37

9.5

FOPT

44

TmGa

15

34.2

0.30

9.1

SOPT

45

HoAl2

27

28.8

0.17

*

SOPT

46

GdCoC2

15

28.4

0.23

*

SOPT

47

HoN

18

28.2

0.29

*

SOPT

48

HoNi2

13.9

26.1

0.27

8.7

SOPT

49

ErFeSi

22

23.5

0.18

7.1

SOPT

50

  1. The data was taken from the refs. 42,43,44,45,46,47,48,49,50 in J kg–1 K–1 and also converted into J cm–3 K–1 by using the ideal density according to the AtomWork51 database. Asterisk (*) indicates an unreported value.
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