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.
Bibliographical noteFunding Information:
The work at Yonsei University was supported by the National Research Foundation of Korea (NRF) [grant numbers NRF-2017R1A5A1014862 (SRC program: vdWMRC center), NRF-2019R1A2C2002601, and NRF-2021R1A2C1006375]. HYC was partially supported by the Graduate School of Yonsei University Research Scholarship Grant in 2017. The Work at Kyungpook National University was supported by an NRF grant [grant number NRF-2018K2A9A1A06069211, NRF-2019R1A2C1089017]. The work at Sungkyunkwan University was supported by the Institute for Basic Science (IBS-R011-Y3-2021). AC magnetic susceptibility was measured at the Korea Basic Science Institute, Korea. We would like to thank Editage (www.editage.co.kr) for English language editing.
© 2021, The Author(s).
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