Spin-reorientation transition and exchange-bias effect in CeFe0.5Cr0.5O3 ceramics

IF 2.8 3区 化学 Q3 CHEMISTRY, PHYSICAL Chemical Physics Letters Pub Date : 2024-10-24 DOI:10.1016/j.cplett.2024.141718
Li Hou , Liping Yang , Huihui Zhao , Lanxiang Meng , Shuaishuai Hu
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Abstract

The polycrystalline CeFe0.5Cr0.5O3 ceramics were synthesized by the solid-state method, whose structural and magnetic properties were systematically studied. With the interaction between Ce and Fe/Cr ions, a first-order spin-reorientation transition from Γ4 to Γ1 is observed over a wide temperature interval in CeFe0.5Cr0.5O3, which is remarkably sensitive to applied magnetic field. Interestingly, the exchange-bias effect is found in CeFe0.5Cr0.5O3 ceramics during the spin-reorientation transition, ascribed to the paramagnetic/antiferromagnetic system presented by the two interacting magnetic sublattices (Ce and Fe/Cr). The coexistence of spin-reorientation transition and exchange-bias effect is promising to expand the practical application of CeFe0.5Cr0.5O3 ceramics in multifunctional spintronics.

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CeFe0.5Cr0.5O3 陶瓷中的自旋定向转变和交换偏置效应
通过固态方法合成了多晶 CeFe0.5Cr0.5O3 陶瓷,并对其结构和磁性能进行了系统研究。在 CeFe0.5Cr0.5O3 中,随着 Ce 离子和 Fe/Cr 离子之间的相互作用,在一个较宽的温度区间内观察到从Γ4 到Γ1 的一阶自旋取向转变,这种转变对外加磁场非常敏感。有趣的是,CeFe0.5Cr0.5O3 陶瓷在自旋取向转变过程中发现了交换偏置效应,这归因于两个相互作用的磁性子晶格(Ce 和 Fe/Cr)所呈现的顺磁/反铁磁系统。自旋定向转变与交换偏置效应的共存有望拓展 CeFe0.5Cr0.5O3 陶瓷在多功能自旋电子学中的实际应用。
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来源期刊
Chemical Physics Letters
Chemical Physics Letters 化学-物理:原子、分子和化学物理
CiteScore
5.70
自引率
3.60%
发文量
798
审稿时长
33 days
期刊介绍: Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.
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