Achievement of a table-like magnetocaloric effect in the dual-phase ErZn₂/ErZn composite

Figures & data

Figure 1. Room temperature power X-ray diffraction pattern of dual-phase ErZn₂/ErZn composite with the Rietveld refinement using MAUD program.

Figure 2. Back-scattered scanning electron (BSE) image of the dual-phase ErZn₂/ErZn composite. Inset shows the corresponding secondary electron (SE) image of the dual-phase ErZn₂/ErZn composite.

Figure 3. Temperature dependence of magnetization σ (left scale) and dσ _FC/dT (right scale) for dual-phase ErZn₂/ErZn composite under the magnetic field of B = 1 T. The inset shows temperature dependence of σ under the zero field cooled (ZFC) and field cooled (FC) mode for dual-phase ErZn₂/ErZn composite under B = 0.1 T.

Figure 4. (a) Magnetic field (B, increasing only) dependence of the magnetization σ for dual-phase ErZn₂/ErZn composite. (b) Temperature dependence of magnetic part of entropy change –ΔS_M for dual-phase ErZn₂/ErZn composite.

Table 1. The magnetic transition temperature(s) T_M together with the MCE parameters (–ΔS_M^max, δT_FWHM, and RC-1) under the magnetic field change of 0–5 T for dual-phase ErZn₂/ErZn composite and some recently reported giant/large MCE materials below 30 K.

Materials	TM (K)	−ΔSM^max (J/kg K)	δTFWHM (K)	RC−1 (J/kg)	Ref.
ErZn2/ErZn	20/9	19.5	22.9	362	Present
ErNiSi	4	19.1	∼20	288	[22]
ErMn2Si2	4.5	25.2	14.5	292	[26]
ErRu2Si2	5.5	17.6	∼15	216	[27]
HoAgGa	7	16	∼22	278	[23]
TmZn	8	26.9	∼11	214	[16]
Dy0.9Tm0.1Ni2B2C	9.2	14.7	19	212	[28]
Tm2Cu2Cd	15	17.3	13	168	[14]
Er3Ni2	17/12	19.5	23	356	[29]
HoPdIn	23/6	14.6	34	372	[24]
GdCo2B2	25	17.1	27	346	[30]

Gupta S, Rawat R, Duresh KG. Large field-induced magnetocaloric effect and magnetoresistance in ErNiSi. Appl Phys Lett. 2014;105:012403. doi: 10.1063/1.4887336

 Web of Science ®Google Scholar

Li L, Nishimura K, Hutchison WD, et al. Giant reversible magnetocaloric effect in ErMn2Si2 compound with a second order magnetic phase transition. Appl Phys Lett. 2012;100:152403. doi: 10.1063/1.4704155

 Web of Science ®Google Scholar

Samanta T, Das I, Banerjee S. Giant magnetocaloric effect in antiferromagnetic ErRu2Si2 compound. Appl Phys Lett. 2007;91:152506. doi: 10.1063/1.2798594

 Web of Science ®Google Scholar

da Silva LM, dos Santos AO, Coelho AA, et al. Magnetic properties and magnetocaloric effect of the HoAgGa compound. Appl Phys Lett. 2013;103:162413. doi: 10.1063/1.4826440

 Web of Science ®Google Scholar

Li LW, Yuan Y, Zhang Y, et al. Giant low field magnetocaloric effect and field-induced metamagnetic transition in TmZn. Appl Phys Lett. 2015;107:132401. doi: 10.1063/1.4932058

 Web of Science ®Google Scholar

Li LW, Nishimura K. Giant reversible magnetocaloric effect in antiferromagnetic superconductor Dy0.9Tm0.1Ni2B2C compound. Appl Phys Lett. 2009;95:132505. doi: 10.1063/1.3240399

 Web of Science ®Google Scholar

Zhang YK, Yang Y, Xu X, et al. Large reversible magnetocaloric effect in RE2Cu2In (RE = Er and Tm) and enhanced refrigerant capacity in its composite materials. J Phys D: Appl Phys. 2016;49:145002. doi: 10.1088/0022-3727/49/14/145002

 Web of Science ®Google Scholar

Dong QY, Chen J, Shen J, et al. Magnetic properties and magnetocaloric effects in R3Ni2 (R = Ho and Er) compounds. Appl Phys Lett. 2011;99:132504. doi: 10.1063/1.3643142

 Web of Science ®Google Scholar

Li L, Namiki T, Huo D, et al. Two successive magnetic transitions induced large refrigerant capacity in HoPdIn compound. Appl Phys Lett. 2013;103:222405. doi: 10.1063/1.4834815

 Web of Science ®Google Scholar

Li L, Nishimura K, Yamane H. Giant reversible magnetocaloric effect in antiferromagnetic GdCo2B2 compound. Appl Phys Lett. 2009;94:102509. doi: 10.1063/1.3095660

 Web of Science ®Google Scholar