Chemical disorder driven reentrant spin cluster glass state formation and associated magnetocaloric properties of Nd2Ni0.94Si2.94

We report the synthesis of a new ternary intermetallic compound Nd2Ni0.94Si2.94 that exhibits large magnetocaloric effect in the presence of reentrant spin cluster state formation.

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Magnetic and magnetocaloric properties of Dy5Pd2: role of magnetic irreversibility

RSC Advances ◽

10.1039/c5ra06970j ◽

2015 ◽

Vol 5 (59) ◽

pp. 47860-47865 ◽

Cited By ~ 16

Author(s):

Tapas Paramanik ◽

Tapas Samanta ◽

R. Ranganathan ◽

I. Das

Keyword(s):

Intermetallic Compound ◽

Low Temperature ◽

Magnetocaloric Effect ◽

Temperature Region ◽

Magnetocaloric Properties ◽

Magnetic Irreversibility

In this report the origin of giant inverse magnetocaloric effect at low temperature region has been studied in cluster glass intermetallic compound Dy5Pd2. In this context the procedure to obtain reversible magnetocaloric effect using Maxwell’s relation has been described.

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Direct observation of Fe-Al-Zn ternary intermetallic compound and its transformation during the early stage of hot-dip galvanizing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100151416 ◽

1993 ◽

Vol 51 ◽

pp. 1116-1117

Author(s):

C. S. Lin ◽

W. A. Chiou ◽

M. Meshii

Keyword(s):

Intermetallic Compound ◽

Reaction Rate ◽

Diffusion Rate ◽

Early Stage ◽

Zinc Bath ◽

Steel Sheets ◽

Direct Observations ◽

Solid Iron ◽

Iron And Zinc ◽

Ternary Intermetallic Compound

The galvannealed steel sheets have received ever increased attention because of their excellent post-painting corrosion resistance and good weldability. However, its powdering and flaking tendency during press forming processes strongly impairs its performance. In order to optimize the properties of galvanneal coatings, it is critical to control the reaction rate between solid iron and molten zinc.In commercial galvannealing line, aluminum is added to zinc bath to retard the diffusion rate between iron and zinc by the formation of a thin layer of Al intermetallic compound on the surface of steel at initial hot-dip galvanizing. However, the form of this compound and its transformation are still speculated. In this paper, we report the direct observations of this compound and its transformation.The specimens were prepared in a hot-dip simulator in which the steel was galvanized in the zinc bath containing 0.14 wt% of Al at a temperature of 480 °C for 5 seconds and was quenched by liquid nitrogen.

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Structural and magnetic properties of a novel ternary intermetallic compound CePd3Sn2

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2017.12.323 ◽

2018 ◽

Vol 739 ◽

pp. 518-521 ◽

Cited By ~ 1

Author(s):

C.L. Yang ◽

S. Tsuda ◽

K. Umeo ◽

T. Onimaru ◽

W. Paschinger ◽

...

Keyword(s):

Magnetic Properties ◽

Intermetallic Compound ◽

Structural And Magnetic Properties ◽

Ternary Intermetallic Compound

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The Effect of Different Atomic Substitution at Mn Site on Magnetocaloric Effect in Ni50Mn35Co2Sn13 Alloy

Crystals ◽

10.3390/cryst8080329 ◽

2018 ◽

Vol 8 (8) ◽

pp. 329 ◽

Cited By ~ 3

Author(s):

Chengfen Xing ◽

Hu Zhang ◽

Kewen Long ◽

Yaning Xiao ◽

Hanning Zhang ◽

...

Keyword(s):

Magnetocaloric Effect ◽

Parent Phase ◽

Martensitic Transition ◽

Martensitic Transformation Temperature ◽

Low Field ◽

Transition Metal Element ◽

Magnetocaloric Properties ◽

Metal Element ◽

Mn Content ◽

Atomic Substitution

The effect of different atomic substitutions at Mn sites on the magnetic and magnetocaloric properties in Ni50Mn35Co2Sn13 alloy has been studied in detail. The substitution of Ni or Co for Mn atoms might lower the Mn content at Sn sites, which would reduce the d-d hybridization between Ni 3d eg states and the 3d states of excess Mn atoms at Sn sites, thus leading to the decrease of martensitic transformation temperature TM in Ni51Mn34Co2Sn13 and Ni50Mn34Co3Sn13 alloys. On the other hand, the substitution of Sn for Mn atoms in Ni50Mn34Co2Sn14 would enhance the p-d covalent hybridization between the main group element (Sn) and the transition metal element (Mn or Ni) due to the increase of Sn content, thus also reducing the TM by stabilizing the parent phase. Due to the reduction of TM, a magnetostructural martensitic transition from FM austenite to weak-magnetic martensite is realized in Ni51Mn34Co2Sn13 and Ni50Mn34Co2Sn14, resulting in a large magnetocaloric effect around room temperature. For a low field change of 3 T, the maximum ∆SM reaches as high as 30.9 J/kg K for Ni50Mn34Co2Sn14. A linear dependence of ΔSM upon μ0H has been found in Ni50Mn34Co2Sn14, and the origin of this linear relationship has been discussed by numerical analysis of Maxwell’s relation.

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Spin-Cluster State in a Pyrochlore Lattice

Magnetism and Transport Phenomena in Spin-Charge Coupled Systems on Frustrated Lattices - Springer Theses ◽

10.1007/978-4-431-55663-3_8 ◽

2015 ◽

pp. 103-114

Author(s):

Hiroaki Ishizuka

Keyword(s):

Cluster State ◽

Spin Cluster

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The Influence of Cold Rolling on Magnetocaloric Properties of Gd100-xYx (x = 0, 5, 10, 15) Alloys

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.233-234.238 ◽

2015 ◽

Vol 233-234 ◽

pp. 238-242 ◽

Cited By ~ 6

Author(s):

Sergey Taskaev ◽

Konstantin Skokov ◽

Dmitriy Karpenkov ◽

Vladimir V. Khovaylo ◽

Vasiliy D. Buchelnikov ◽

...

Keyword(s):

Cold Rolling ◽

Magnetocaloric Effect ◽

High Temperature Heat Treatment ◽

Magnetic Cooling ◽

A Value ◽

Magnetocaloric Properties ◽

Cooling Devices ◽

Cold Rolled ◽

Magnetocaloric Materials ◽

Temperature Heat Treatment

In this work we report the results of investigation of the magnetocaloric effect in Gd100-xYx (x= 0, 5, 10, 15) cold rolled ribbons. It is shown that the magnetocaloric effect exists within a wide temperature interval 258-295 K and it is comparable with the magnetocaloric effect observed in bulk samples of pure gadolinium. The value of the magnetocaloric effect in the rolled samples is reduced in comparison with the bulk samples and strongly depends on a degree of plastic deformation. High temperature heat treatment can restore a value of the magnetocaloric effect in the cold rolled ribbons up to initial ones. Thus, cold rolling is proposed to be a promising technique for producing thin forms of magnetocaloric materials for heat exchangers of magnetic cooling devices.

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Magnetic Properties and Magnetocaloric Effect in Gd100-xCox Thin Films

Crystals ◽

10.3390/cryst9060278 ◽

2019 ◽

Vol 9 (6) ◽

pp. 278 ◽

Cited By ~ 1

Author(s):

Mohamed Tadout ◽

Charles-Henri Lambert ◽

Mohammed El Hadri ◽

Abdelilah Benyoussef ◽

Mohammed Hamedoun ◽

...

Keyword(s):

Thin Films ◽

Magnetocaloric Effect ◽

Magnetic Entropy Change ◽

Entropy Change ◽

Magnetic Thin Films ◽

Critical Parameters ◽

Cooling Power ◽

Magnetocaloric Properties ◽

Co Concentration ◽

Key Parameter

We investigated the magnetic and magnetocaloric properties of Gd100-xCox ( x = 40 to 56) thin films fabricated by the sputtering technique. Under an applied field change Δ H = 20 kOe , the magnetic entropy change ( Δ S m ) decreases from 2.64 Jkg−1K−1 for x = 44 to about 1.27 Jkg−1K−1 for x = 56. Increasing the Co concentration from x = 40 to 56 shifts the Curie temperature of Gd100-xCox ( x = 40 to 56) thin films from 180 K toward 337 K. Moreover, we extracted the values of critical parameters Tc, β, γ, and δ by using the modified Arrott plot methods. The results indicate the presence of a long-range ferromagnetic order. More importantly, we showed that the relative cooling power (RCP), which is a key parameter in magnetic refrigeration applications, is strongly enhanced by changing the Co concentration in the Gd100-xCox thin films. Our findings help pave the way toward the enhancement of the magnetocaloric effect in magnetic thin films.

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