Tailoring Ferrimagnetic Transition Temperatures, Coercivity Fields, and Saturation Magnetization by Modulating Mn Concentration in (CoCrFeNi)1−xMn x High-Entropy Alloys

Chi Hung Lee; Hsu Hsuan Chin; Kun Yuan Zeng; Yao Jen Chang; An Chou Yeh; Jien Wei Yeh; Su Jien Lin; Chun Chieh Wang; Uwe Glatzel; E. Wen Huang

doi:10.3389/fmats.2022.824285

Tailoring Ferrimagnetic Transition Temperatures, Coercivity Fields, and Saturation Magnetization by Modulating Mn Concentration in (CoCrFeNi)_1−xMn_x High-Entropy Alloys

Chi Hung Lee^*, Hsu Hsuan Chin, Kun Yuan Zeng, Yao Jen Chang, An Chou Yeh, Jien Wei Yeh, Su Jien Lin, Chun Chieh Wang^*, Uwe Glatzel, E. Wen Huang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Cr and Mn play intriguing roles in determining the magnetic properties of CoFeNi-based high-entropy alloys (HEA). In this study, we tune the stoichiometric Mn composition to systematically explore the magnetic properties of (CoCrFeNi)_1−xMn_x HEAs. We observe a change from ferro-to ferrimagnetism due to the incorporation of Mn atoms into the CoCrFeNi HEA. In addition, we measure an 81% reduction in magnetization with the incorporation of 7.6 (2)% Mn atoms. Such a significant reduction in magnetization cannot be solely explained by the effect of the inversed moments on the Mn atoms. Hence, we propose a mechanism whereby the Mn atoms flip the moments of neighboring atoms, which results in the magnetization reduction observed in the CoFeNi-based HEAs.

Original language	English
Article number	824285
Journal	Frontiers in Materials
Volume	9
DOIs	https://doi.org/10.3389/fmats.2022.824285
State	Published - 28 Jan 2022

Keywords

ferrimagnetism
ferromagentism
high-entropy alloy (HEA)
magnetization
single crystal

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10.3389/fmats.2022.824285

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Lee, C. H., Chin, H. H., Zeng, K. Y., Chang, Y. J., Yeh, A. C., Yeh, J. W., Lin, S. J., Wang, C. C., Glatzel, U., & Huang, E. W. (2022). Tailoring Ferrimagnetic Transition Temperatures, Coercivity Fields, and Saturation Magnetization by Modulating Mn Concentration in (CoCrFeNi)_1−xMn_x High-Entropy Alloys. Frontiers in Materials, 9, Article 824285. https://doi.org/10.3389/fmats.2022.824285

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title = "Tailoring Ferrimagnetic Transition Temperatures, Coercivity Fields, and Saturation Magnetization by Modulating Mn Concentration in (CoCrFeNi)1−xMn x High-Entropy Alloys",

abstract = "Cr and Mn play intriguing roles in determining the magnetic properties of CoFeNi-based high-entropy alloys (HEA). In this study, we tune the stoichiometric Mn composition to systematically explore the magnetic properties of (CoCrFeNi)1−xMnx HEAs. We observe a change from ferro-to ferrimagnetism due to the incorporation of Mn atoms into the CoCrFeNi HEA. In addition, we measure an 81% reduction in magnetization with the incorporation of 7.6 (2)% Mn atoms. Such a significant reduction in magnetization cannot be solely explained by the effect of the inversed moments on the Mn atoms. Hence, we propose a mechanism whereby the Mn atoms flip the moments of neighboring atoms, which results in the magnetization reduction observed in the CoFeNi-based HEAs.",

keywords = "ferrimagnetism, ferromagentism, high-entropy alloy (HEA), magnetization, single crystal",

author = "Lee, {Chi Hung} and Chin, {Hsu Hsuan} and Zeng, {Kun Yuan} and Chang, {Yao Jen} and Yeh, {An Chou} and Yeh, {Jien Wei} and Lin, {Su Jien} and Wang, {Chun Chieh} and Uwe Glatzel and Huang, {E. Wen}",

note = "Publisher Copyright: Copyright {\textcopyright} 2022 Lee, Chin, Zeng, Chang, Yeh, Yeh, Lin, Wang, Glatzel and Huang.",

year = "2022",

month = jan,

day = "28",

doi = "10.3389/fmats.2022.824285",

language = "English",

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journal = "Frontiers in Materials",

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T1 - Tailoring Ferrimagnetic Transition Temperatures, Coercivity Fields, and Saturation Magnetization by Modulating Mn Concentration in (CoCrFeNi)1−xMn x High-Entropy Alloys

AU - Lee, Chi Hung

AU - Chin, Hsu Hsuan

AU - Zeng, Kun Yuan

AU - Chang, Yao Jen

AU - Yeh, An Chou

AU - Yeh, Jien Wei

AU - Lin, Su Jien

AU - Wang, Chun Chieh

AU - Glatzel, Uwe

AU - Huang, E. Wen

PY - 2022/1/28

Y1 - 2022/1/28

N2 - Cr and Mn play intriguing roles in determining the magnetic properties of CoFeNi-based high-entropy alloys (HEA). In this study, we tune the stoichiometric Mn composition to systematically explore the magnetic properties of (CoCrFeNi)1−xMnx HEAs. We observe a change from ferro-to ferrimagnetism due to the incorporation of Mn atoms into the CoCrFeNi HEA. In addition, we measure an 81% reduction in magnetization with the incorporation of 7.6 (2)% Mn atoms. Such a significant reduction in magnetization cannot be solely explained by the effect of the inversed moments on the Mn atoms. Hence, we propose a mechanism whereby the Mn atoms flip the moments of neighboring atoms, which results in the magnetization reduction observed in the CoFeNi-based HEAs.

AB - Cr and Mn play intriguing roles in determining the magnetic properties of CoFeNi-based high-entropy alloys (HEA). In this study, we tune the stoichiometric Mn composition to systematically explore the magnetic properties of (CoCrFeNi)1−xMnx HEAs. We observe a change from ferro-to ferrimagnetism due to the incorporation of Mn atoms into the CoCrFeNi HEA. In addition, we measure an 81% reduction in magnetization with the incorporation of 7.6 (2)% Mn atoms. Such a significant reduction in magnetization cannot be solely explained by the effect of the inversed moments on the Mn atoms. Hence, we propose a mechanism whereby the Mn atoms flip the moments of neighboring atoms, which results in the magnetization reduction observed in the CoFeNi-based HEAs.

KW - ferrimagnetism

KW - ferromagentism

KW - high-entropy alloy (HEA)

KW - magnetization

KW - single crystal

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DO - 10.3389/fmats.2022.824285

M3 - Article

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SN - 2296-8016

VL - 9

JO - Frontiers in Materials

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ER -

Tailoring Ferrimagnetic Transition Temperatures, Coercivity Fields, and Saturation Magnetization by Modulating Mn Concentration in (CoCrFeNi)_1−xMn_x High-Entropy Alloys

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