Tunable magnetization steps in mixed valent ferromagnet Eu2CoMnO6

Nara Lee; Jong Hyuk Kim; Dong Gun Oh; Hyun Jun Shin; Hwan Young Choi; Sungkyun Choi; Younjung Jo; Young Jai Choi

doi:10.1038/s41598-021-88950-w

Tunable magnetization steps in mixed valent ferromagnet Eu₂CoMnO₆

Nara Lee, Jong Hyuk Kim, Dong Gun Oh, Hyun Jun Shin, Hwan Young Choi, Sungkyun Choi, Younjung Jo, Young Jai Choi

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

2 Scopus citations

Abstract

Magnetic properties can be manipulated to enhance certain functionalities by tuning different material processing parameters. Here, we present the controllable magnetization steps of hysteresis loops in double-perovskite single crystals of Eu₂CoMnO₆. Ferromagnetic order emerges below T_C ≈ 122 K along the crystallographic c axis. The difficulty in altering Co²⁺ and Mn⁴⁺ ions naturally induces additional antiferromagnetic clusters in this system. Annealing the crystals in different gas environments modifies the mixed magnetic state, and results in the retardation (after O₂-annealing) and bifurcation (after Ar-annealing) of the magnetization steps of isothermal magnetization. This remarkable variation offers an efficient approach for improving the magnetic properties of double-perovskite oxides.

Original language	English
Article number	9408
Journal	Scientific Reports
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41598-021-88950-w
State	Published - Dec 2021

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title = "Tunable magnetization steps in mixed valent ferromagnet Eu2CoMnO6",

abstract = "Magnetic properties can be manipulated to enhance certain functionalities by tuning different material processing parameters. Here, we present the controllable magnetization steps of hysteresis loops in double-perovskite single crystals of Eu2CoMnO6. Ferromagnetic order emerges below TC ≈ 122 K along the crystallographic c axis. The difficulty in altering Co2+ and Mn4+ ions naturally induces additional antiferromagnetic clusters in this system. Annealing the crystals in different gas environments modifies the mixed magnetic state, and results in the retardation (after O2-annealing) and bifurcation (after Ar-annealing) of the magnetization steps of isothermal magnetization. This remarkable variation offers an efficient approach for improving the magnetic properties of double-perovskite oxides.",

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T1 - Tunable magnetization steps in mixed valent ferromagnet Eu2CoMnO6

AU - Lee, Nara

AU - Kim, Jong Hyuk

AU - Oh, Dong Gun

AU - Shin, Hyun Jun

AU - Choi, Hwan Young

AU - Choi, Sungkyun

AU - Jo, Younjung

AU - Choi, Young Jai

PY - 2021/12

Y1 - 2021/12

N2 - Magnetic properties can be manipulated to enhance certain functionalities by tuning different material processing parameters. Here, we present the controllable magnetization steps of hysteresis loops in double-perovskite single crystals of Eu2CoMnO6. Ferromagnetic order emerges below TC ≈ 122 K along the crystallographic c axis. The difficulty in altering Co2+ and Mn4+ ions naturally induces additional antiferromagnetic clusters in this system. Annealing the crystals in different gas environments modifies the mixed magnetic state, and results in the retardation (after O2-annealing) and bifurcation (after Ar-annealing) of the magnetization steps of isothermal magnetization. This remarkable variation offers an efficient approach for improving the magnetic properties of double-perovskite oxides.

AB - Magnetic properties can be manipulated to enhance certain functionalities by tuning different material processing parameters. Here, we present the controllable magnetization steps of hysteresis loops in double-perovskite single crystals of Eu2CoMnO6. Ferromagnetic order emerges below TC ≈ 122 K along the crystallographic c axis. The difficulty in altering Co2+ and Mn4+ ions naturally induces additional antiferromagnetic clusters in this system. Annealing the crystals in different gas environments modifies the mixed magnetic state, and results in the retardation (after O2-annealing) and bifurcation (after Ar-annealing) of the magnetization steps of isothermal magnetization. This remarkable variation offers an efficient approach for improving the magnetic properties of double-perovskite oxides.

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Tunable magnetization steps in mixed valent ferromagnet Eu₂CoMnO₆

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