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- W2922320121 abstract "It has recently been reported that the exchange bias (EB) phenomenon in double‐perovskite Y 2 CoMnO 6 ceramic arises from additional antiferromagnetic (AFM) clusters formed by the anti‐sites of ionic disorders in the dominant ferromagnetic (FM) phase. To extensively examine the role of ionic orders and versatile magnetic interactions, we measure the magnetic properties of Y 2 Co 2 − x Mn x O 6 ( x = 1.0–1.9) compounds with different relative ratios of the magnetic ions. Upon increasing the ratio of Mn ions, the FM transition temperature is gradually lowered with a greatly enhanced EB effect for x ≥ 1.4. The measurement of heat capacity and AC magnetic susceptibility in the compound with x = 1.5 suggests the formation of magnetic cluster‐glass state from short‐range FM order with comparable AFM clusters generated by the formation of Mn 3+ –O 2− –Mn 3+ bonds. The dependence of the EB effect on the cooling field reveals the maximum EB field at 2 K to be H EB = 3.19 kOe. The large EB effect originates from the adjusted proportions of FM and AFM phases and the improved interfacial pinning of exchange coupling in the cluster‐glass state. Our results, based on intricate magnetic correlations and phases, provide essential clues for exploring suitable ceramic compounds for magnetic functional applications." @default.
- W2922320121 created "2019-03-22" @default.
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- W2922320121 date "2019-03-18" @default.
- W2922320121 modified "2023-10-18" @default.
- W2922320121 title "Enhanced Exchange Bias Effect by Modulating Relative Ratio of Magnetic Ions in Y <sub>2</sub> Co <sub> 2− <i>x</i> </sub> Mn <sub> <i>x</i> </sub> O <sub>6</sub> ( <i>x</i> = 1.0–1.9)" @default.
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- W2922320121 doi "https://doi.org/10.1002/pssr.201900008" @default.
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