{"title":"Effect of Al doping on the magnetic, magneto-structural, and magnetocaloric properties of Ni-Mn-In Heusler alloys","authors":"Milad Arman , Farzad Shahri , Reza Gholamipour , Sajad Sohrabi","doi":"10.1016/j.ssc.2024.115767","DOIUrl":null,"url":null,"abstract":"<div><div>The present study aimed at investigating the effect of Al doping (0–1.5 at. %) on the magnetic, magneto-structural, and magnetocaloric properties of the Ni<sub>50</sub>Mn<sub>34</sub>In<sub>16</sub> Heusler alloy with diameters of 2 mm prepared using a suction-casting technique. X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and magnetic force microscopy (MFM) were employed to identify the structure, microstructure, and magnetic domain distribution of the samples. Also, phase transformation behavior was characterized using differential scanning calorimetry (DSC) across a temperature range of 200–350 K. A SQUID Quantum Design MPMS®3 was employed to evaluate the thermo-magnetic properties of the samples during heating and cooling cycles between 175 and 375 K under a constant magnetic field of 2 T. Finally, A cryostat-equipped vibrating sample magnetometer (VSM) was used to analyze the magnetic and magnetocaloric properties around the magneto-structural and magnetic phase transition temperature, up to a magnetic field of 1.75 T. Based on the results obtained, it was shown that doping 0.5 at. % Al increases magnetization, magnetic entropy change (<span><math><mrow><mrow><mo>Δ</mo><msub><mi>S</mi><mi>M</mi></msub></mrow><mo>)</mo></mrow></math></span> and adiabatic temperature change (<span><math><mrow><mrow><mo>Δ</mo><msub><mi>T</mi><mrow><mi>a</mi><mi>d</mi></mrow></msub></mrow><mo>)</mo></mrow></math></span> to 79 emu/g, 3.86 J/kg.K, and 1.14 K respectively, which can be attributed to the pre-martensitic phase transformation. However, by further Al substitution up to 1.5 at. %, the magneto-structural transformation temperatures shift toward higher values, while magnetization, <span><math><mrow><mo>Δ</mo><msub><mi>S</mi><mi>M</mi></msub></mrow></math></span>, and <span><math><mrow><mo>Δ</mo><msub><mi>T</mi><mrow><mi>a</mi><mi>d</mi></mrow></msub></mrow></math></span> decrease.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"396 ","pages":"Article 115767"},"PeriodicalIF":2.1000,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Communications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038109824003442","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
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Abstract
The present study aimed at investigating the effect of Al doping (0–1.5 at. %) on the magnetic, magneto-structural, and magnetocaloric properties of the Ni50Mn34In16 Heusler alloy with diameters of 2 mm prepared using a suction-casting technique. X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and magnetic force microscopy (MFM) were employed to identify the structure, microstructure, and magnetic domain distribution of the samples. Also, phase transformation behavior was characterized using differential scanning calorimetry (DSC) across a temperature range of 200–350 K. A SQUID Quantum Design MPMS®3 was employed to evaluate the thermo-magnetic properties of the samples during heating and cooling cycles between 175 and 375 K under a constant magnetic field of 2 T. Finally, A cryostat-equipped vibrating sample magnetometer (VSM) was used to analyze the magnetic and magnetocaloric properties around the magneto-structural and magnetic phase transition temperature, up to a magnetic field of 1.75 T. Based on the results obtained, it was shown that doping 0.5 at. % Al increases magnetization, magnetic entropy change ( and adiabatic temperature change ( to 79 emu/g, 3.86 J/kg.K, and 1.14 K respectively, which can be attributed to the pre-martensitic phase transformation. However, by further Al substitution up to 1.5 at. %, the magneto-structural transformation temperatures shift toward higher values, while magnetization, , and decrease.
期刊介绍：
Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged.
A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions.
The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.
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