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arXiv 2202.11073cond-mat.mtrl-scicond-mat.str-el
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等原子CrMnFeCoNi的磁性

Magnetic properties of equiatomic CrMnFeCoNi

Timothy A. Elmslie, Jacob Startt, Sujeily Soto-Medina, Yang Yang, Keke Feng, Ryan E. Baumbach, Emma Zappala, Gerald D. Morris, Benjamin A. Frandsen, Mark W. Mei… 展开作者

Timothy A. Elmslie, Jacob Startt, Sujeily Soto-Medina, Yang Yang, Keke Feng, Ryan E. Baumbach, Emma Zappala, Gerald D. Morris, Benjamin A. Frandsen, Mark W. Meisel, Michele V. Manuel, Rémi Dingreville, James J. Hamlin

摘要:

磁,比热,和结构性能的等原子康托合金系统的温度在5开尔文和300开尔文之间的报告,并高达70千奥斯特的字段。对铸态、退火态和冷加工态样品进行的磁化测量显示出强烈的加工历史依赖性,并且冷加工后的高温退火不能使合金恢复到原始状态。对已知沉淀物的测量表明,在43开尔文和85开尔文下检测到的两个跃迁是Cantor合金固有的,而不是杂质相的结果。实验和从头算密度泛函理论(DFT)计算结果表明,这些跃迁分别是弱亚铁磁跃迁和类自旋玻璃跃迁,磁性和比热测量提供了显着的斯通纳增强和电子的证据材料内的电子-电子相互作用。

英文摘要:

Magnetic, specific heat, and structural properties of the equiatomic Cantor alloy system are reported for temperatures between 5 kelvin and 300 kelvin, and up to fields of 70 kilo-oersted. Magnetization measurements performed on as-cast, annealed, and cold-worked samples reveal a strong processing history dependence and that high-temperature annealing after cold-working does not restore the alloy to a pristine state. Measurements on known precipitates show that the two transitions, detected at 43 kelvin and 85 kelvin, are intrinsic to the Cantor alloy and not the result of an impurity phase. Experimental and ab initio density functional theory (DFT) computational results suggest that these transitions are a weak ferrimagnetic transition and a spin-glass-like transition, respectively, and magnetic and specific heat measurements provide evidence of significant Stoner enhancement and electron-electron interactions within the material.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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