Table 1 Selected electrocaloric effects at phase transitions near and away from room temperature.

From: Giant room temperature electrocaloric effect in a layered hybrid perovskite ferroelectric: [(CH3)2CHCH2NH3]2PbCl4

EC material

TC (K)

ΔS (J/kg/K)

Q (kJ/kg)

ΔT (K)

ΔE (kV/cm)

ΔS/ΔE (J cm/kg/K/kV)

ΔT/ΔE (mK cm/kV)

Ref.

KH2PO4

123

3.5

0.4

1.0

10

0.35

100

14

BaTiO3

397

2.1

0.8

0.87

4

0.525

220

15

PbZr0.95Ti0.05O3

499

8.0

4

12

480

0.017

25

9

Pb0.8Ba0.2ZrO3

290

46.9

14

45.3

598

0.0782

76

36

Hf0.5Zr0.5O2

448

10.9

4.9

10.8

3260

0.003

3

47

SrBi2Ta2O9

565

2.4

1.4

4.9

600

0.004

8

35

CuInP2S6

315

5.8

1.8

3.3

142

0.041

23

37

0.87PMN-0.13PT

343

0.6

0.2

0.6

24

0.025

25

48

BNBT/BCZT bilayer

370

26.1

0.6

23

620

0.042

37

49

P(VDF-TrFE)

353

60

21

12.5

2090

0.0287

6

10

NaKC4H4O6·4H2O

265–298

–

–

0.003

1.2

–

25

50

TGS

323

–

–

0.11

1.6

–

68

16

NH4HSO4

271

0.1

0.03

0.025

1.5

0.067

17

51

(iBA)2PbCl4

302

25.64

7.7

11.06

29.7

0.86

370

Herein

  1. Isothermal entropy change |ΔS|, adiabatic temperature change |ΔT|, and isothermal heat |Q|, at starting temperature T, due to changes of electric field |ΔE|. For all entries, Q = TΔS.
  2. PMN PbMg1/3Nb2/3O3, PT PbTiO3, P(VDF–TrFE) poly(vinylidene fluoride-trifluoroethylene) 55/45 mol%, TGS (NH2CH2COOH)3H2SO4, BNBT (Bi0.5Na0.5)TiO3–BaTiO3, BCZT Ba(Zr0.2Ti0.8)O3–(Ba0.7Ca0.3)TiO3.
Back to article page