Three-dimensional ferrimagnetic ground state of triangular-lattice system Ca3Co2O6

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-05 DOI:10.1016/j.jmmm.2025.173000

Santanu De , Biswajit Dutta , V.R. Reddy , A. Banerjee

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引用次数: 0

Abstract

High temperature one-dimensional (1D) ferromagnetic (FM) chains in Ca₃Co₂O₆ spin system are subjected to a magnetic field and temperature induced first order phase transition (FOPT) to 3D ferrimagnetic (FIM) ground state with decrease in temperature (T) at lower magnetic field. Weak-FM interaction of third-nearest-neighbor (nn) interchains removes the frustration effect arising from predominant antiferromagnetic (AFM) interactions of first-nn and second-nn interchains in the underlying triangular-lattice resulting a 3D FIM ordering of 1D FM chains at low T. However, hindered kinetics of FOPT partially masks this transformation giving rise to coexistence of non-interacting 1D FM chains with 3D FIM state at low T. The complex exchange pathways of the 3D FIM state is further substantiated by random substitution of S = 5/2 magnetic-impurity into the spin chains of original system. It reveals weakening of FM interactions of both intrachain and third-nn surrounding chains, respectively, without significant modulation in the AFM coupling of first-nn and second-nn interchains. Thus, the effect of AFM interactions is enhanced as compared to FM couplings with increase of S = 5/2 impurities resulting instability of 3D long-range FIM state at low T.

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.