Enhancement of giant refrigerant capacity in Ho1-Gd B2 alloys (0.1 ≤ x ≤ 0.4)

In this paper, we report on the structure, magnetic properties and magnetocaloric effect in NaZn13-type LaFe11.1Co0.8Si1.1Bxalloys close to room temperature. The stable NaZn13cubic structure phase (space group isFm-3c) can easily obtained by annealing at 1080 °C for 225 hours. The maximal values of magnetic entropy change for LaFe11.1Co0.8Si1.1Bx(x=0.2, 0.25) were found to be 5.3 and 5.9 J/kg K at Curie temperature for a magnetic field change in 0-1.5 T, respectively. The calculated refrigerant capacity for a field change in 0–1.5 T is about 147 and 107 J/kg K, for LaFe11.1Co0.8Si1.1B0.2and LaFe11.1Co0.8Si1.1B0.25respectively, which is as larger as those of Gd(99.3%) alloy

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Giant refrigerant capacity in Gd-based amorphous/nanocrsytalline composite fibers

Materials Today Physics ◽

10.1016/j.mtphys.2021.100528 ◽

2021 ◽

Vol 21 ◽

pp. 100528

Author(s):

J.Q. Feng ◽

Y.H. Liu ◽

J.H. Sui ◽

A.N. He ◽

W.X. Xia ◽

...

Keyword(s):

Composite Fibers ◽

Refrigerant Capacity

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Magnetic entropy table-like shape and enhancement of refrigerant capacity in La1.4Ca1.6Mn2O7–La1.3Eu0.1Ca1.6Mn2O7 composite

RSC Advances ◽

10.1039/c9ra00984a ◽

2019 ◽

Vol 9 (26) ◽

pp. 14916-14927 ◽

Cited By ~ 9

Author(s):

R. M'nassri ◽

Muaffaq M. Nofal ◽

P. de Rango ◽

N. Chniba-Boudjada

Keyword(s):

Magnetic Entropy ◽

Refrigerant Capacity ◽

Magnetocaloric Properties

In this work, we have investigated the structural, magnetic and magnetocaloric properties of La1.4Ca1.6Mn2O7 (A) and La1.3Eu0.1Ca1.6Mn2O7 (B) oxides.

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Magnetocaloric Properties of Rapidly Solidified Ni51.1Mn31.2In17.7 Heusler Alloy Ribbons

MRS Proceedings ◽

10.1557/proc-1200-g07-05 ◽

2009 ◽

Vol 1200 ◽

Author(s):

Jose Sánchez Llamazares ◽

Blanca Hernando ◽

Víctor Prida ◽

Carlos García ◽

Caroline Ross

Keyword(s):

Melt Spinning ◽

Magnetic Entropy Change ◽

Magnetic Transition ◽

Entropy Change ◽

Single Step ◽

Magnetic Entropy ◽

Refrigerant Capacity ◽

Magnetocaloric Properties ◽

Room Temperature Magnetic Refrigeration ◽

Rapidly Solidified

AbstractMagnetic entropy change and refrigerant capacity have been determined for a field change of 20 kOe around the second-order magnetic transition of austenite in as-quenched Ni51.1Mn31.2In17.7 alloy ribbons produced by melt spinning technique. Samples crystallize in a single-phase austenite with the highly ordered L21-type crystal structure and a Curie temperature of 275 K. The material shows a maximum magnetic entropy change of ΔSMmax= - 1.7 Jkg-1K-1, an useful working temperature range of 78 K (δTFWHM) and a refrigerant capacity of RC=132 Jkg-1 (RC= │ΔSMmax│ x δTFWHM). The considerable RC value obtained together with the fabrication via a single-step process make austenitic Ni-Mn-In ribbons of potential interest as magnetic refrigerants for room temperature magnetic refrigeration.

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