High sensitivity on caloric effects induced by stress or magnetic field in a polycrystalline Ni-Mn-In-Co-Cu shape-memory alloy

Camarillo-Garcia, Juan-Pablo; Hernández-Navarro, Fernando; Soto-Parra, Daniel; Rı́os-Jara, D.; Flores‐Zúñiga, H.

doi:10.1016/j.scriptamat.2019.03.005

Cited by 15 publications

(3 citation statements)

References 36 publications

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“…etc.) by using MBN [ 51 , 52 ]. The time-response histogram of the MBN signal can analyze the variation of magnetic properties on the grain and grain boundary during plastic deformation, especially the variation in inhomogeneity of magnetic properties before crack formation on a microscopic scale [ 2 ].…”

Section: Discussionmentioning

confidence: 99%

Time-Response-Histogram-Based Feature of Magnetic Barkhausen Noise for Material Characterization Considering Influences of Grain and Grain Boundary under In Situ Tensile Test

Liu

Tian

Gao

et al. 2021

Sensors

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Stress is the crucial factor of ferromagnetic material failure origin. However, the nondestructive test methods to analyze the ferromagnetic material properties’ inhomogeneity on the microscopic scale with stress have not been obtained so far. In this study, magnetic Barkhausen noise (MBN) signals on different silicon steel sheet locations under in situ tensile tests were detected by a high-spatial-resolution magnetic probe. The domain-wall (DW) motion, grain, and grain boundary were detected using a magneto-optical Kerr (MOKE) image. The time characteristic of DW motion and MBN signals on different locations was varied during elastic deformation. Therefore, a time-response histogram is proposed in this work to show different DW motions inside the grain and around the grain boundary under low tensile stress. In order to separate the variation of magnetic properties affected by the grain and grain boundary under low tensile stress corresponding to MBN excitation, time-division was carried out to extract the root-mean-square (RMS), mean, and peak in the optimized time interval. The time-response histogram of MBN evaluated the silicon steel sheet’s inhomogeneous material properties, and provided a theoretical and experimental reference for ferromagnetic material properties under stress.

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Section: Discussionmentioning

confidence: 99%

Time-Response-Histogram-Based Feature of Magnetic Barkhausen Noise for Material Characterization Considering Influences of Grain and Grain Boundary under In Situ Tensile Test

Liu

Tian

Gao

et al. 2021

Sensors

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show abstract

“…By now, the calculation results predict the high performance and huge potential application of Cu doping in the Ni-Mn-In-Co alloy when Cu replacing Ni. Camarillo-Garcia et al [16] found that the Ni 44.0 Mn 36.5 In 13.5 Co 3.8 Cu 2.2 alloy produced over 30 K span in the magnetocaloric effect (H = 5 T) and a reversible adiabatic temperature change ΔT ad of -5.8 K. Subsequently, Zhou et al [33] have experimentally demonstrated the great potential of this alloy for applications with a magnetocaloric effect of 33.7 J kg −1 K −1 and a wide operating temperature range up to 15 K. The abovementioned experimental evidence can demonstrate the reliability of the predictions calculated by the first-principles calculations.…”

Section: Magnetic Momentsmentioning

confidence: 99%

“…However, an unavoidable problem is a significant increase in ∆T Hys with the substitution of Ni by Co. On the contrary, the Cu addition can reduce the ∆T Hys [10,13,14] and Cu atoms have been identified as preferentially occupying excess Mn sites by theoretical calculations [15]. Subsequently, some researchers have added both Co and Cu to Ni-Mn-In alloys intending to achieve a reduction in ∆T Hys while maintaining high ∆M [10,16]. However, the replacement of Mn by the non-magnetic element Cu leads to a significant decrease in magnetism and an increase in martensitic transformation temperature by the first-principles calculations and experiments [15].…”

Section: Introductionmentioning

confidence: 99%

Composition-Dependent of 6 M Martensite Structure and Magnetism in Cu-Alloyed Ni-Mn-In-Co by First-Principles Calculations

Liang

Bai

et al. 2021

Acta Metall. Sin. (Engl. Lett.)

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The composition dependence of the crystal structure and magnetism of the 6 M martensite for the Cu-doped Ni 43.75 Mn 37.5 In 12.5 Co 6.25 alloy at different site occupations (Cu substitution for Ni, Mn, In, and Co, respectively) is investigated in detail with the first-principles calculations. Results show that the austenite (A) phase exhibits a ferromagnetic (FM) state in all occupation manners, the 6 M martensite possesses an FM state except for the case of Cu substitution at the normal Mn (Mn1) site, and the non-modulated (NM) martensite displays a ferrimagnetic (FIM) state apart from the Cu substitution at the Ni, Mn1, or In sites. The Cu atom destabilizes the A, 6 M, and NM phases regardless of the occupation manner. The one-step martensitic transformation from the A to NM phase occurs in the case of Cu substituting for Mn1, excess Mn (Mn2), or Co; for Cu substituting Ni, a martensitic transformation including 6 M martensite happens, i.e., A → 6 M → NM; however, the martensitic transformation disappears when Cu replaces In site. From the equilibrium lattice constants, it can be speculated that the substitution of Cu for Ni can effectively reduce the thermal hysteresis (∆T Hys ). The magnetic properties are found to be greatly reduced by the substitution of the non-magnetic element Cu for the ferromagnetic Mn atom, whereas the effect is fewer in the remaining cases. It is predicted that the alloy has more favorable properties when Cu replaces Ni. The present results can lay a theoretical foundation for further development of multielement magnetic shape memory alloys.

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Elastocaloric Effect and Magnetic Properties of Ni50Mn31.5Ti18Cu0.5 Shape Memory Alloy

Chen

et al. 2022

J Supercond Nov Magn

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High sensitivity on caloric effects induced by stress or magnetic field in a polycrystalline Ni-Mn-In-Co-Cu shape-memory alloy

Cited by 15 publications

References 36 publications

Time-Response-Histogram-Based Feature of Magnetic Barkhausen Noise for Material Characterization Considering Influences of Grain and Grain Boundary under In Situ Tensile Test

Time-Response-Histogram-Based Feature of Magnetic Barkhausen Noise for Material Characterization Considering Influences of Grain and Grain Boundary under In Situ Tensile Test

Composition-Dependent of 6 M Martensite Structure and Magnetism in Cu-Alloyed Ni-Mn-In-Co by First-Principles Calculations

Elastocaloric Effect and Magnetic Properties of Ni50Mn31.5Ti18Cu0.5 Shape Memory Alloy

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