Exchange bias effect and inhomogeneous magnetism in 6H Ba3CoFeRuO9: Role of structural site disorder

Kurian, Mahima M.; Das, Ranjana R.; Devan, Chinnu V.; Varma, Manoj Raama; Colin, Claire; Santhosh, P. N.

doi:10.1016/j.jmmm.2023.170372

Cited by 4 publications

(1 citation statement)

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“…Double perovskite Sr 2 YbRuO 6 shows a tunable exchange bias; however, the maximum exchange bias field is observed as ≈800 Oe at 2 K [46]. Very recently, in structurally disordered Ba 3 CoRu 2 O 9 , a large exchange bias field of 3.48 kOe at 3 K is observed with a cooling field of 50 kOe [47]. However, a smooth decrease in the exchange bias field (H EB ) and the coercivity (H c ) is observed when increasing the temperature, eventually vanishing above T N = 9 K. Therefore, the appearance of the exchange bias field and coercivity below the magnetic ordering temperature indicates its relation with the magnetic correlations in the structure.…”

Section: Resultsmentioning

confidence: 98%

Magnetism and Exchange Bias Properties in Ba2ScRuO6

2023

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This paper presents structural, detailed magnetic, and exchange bias studies in polycrystalline Ba2ScRuO6 synthesized at ambient pressure. In contrast to its strontium analogue, this material crystallizes in a 6L hexagonal structure with space group P3¯m1. The Rietveld refinement using the room-temperature powder XRD pattern suggests a Ru-Sc disorder in the structure. The temperature variation of the DC electrical resistivity highlights a semiconducting behavior with the electron conduction corresponding to Mott’s 3D variable range hopping (VRH) model. The detailed magnetization measurements show that Ba2ScRuO6 develops antiferromagnetic ordering at TN≈ 9 K. Interestingly, below 9 K (TN), the field-cooled magnetic field variation (FC) of the magnetization curves highlights an exchange bias effect in the sample. The exchange bias field reaches a maximum value of 1.24 kOe at 2 K. The exchange bias effect below the magnetic ordering temperature can be attributed to the inhomogeneous magnetic correlations due to the disorder in the structure. Remarkably, the appearance of a large exchange bias field in Ba2ScRuO6 indicates that inhomogeneous hexagonal double perovskites are a promising class to explore new materials having potential applications in spintronics.

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Section: Resultsmentioning

confidence: 98%

Magnetism and Exchange Bias Properties in Ba2ScRuO6

2023

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Exploring the origin of exchange bias and spin glass behavior in 6H hexagonal perovskite structure: Structural and magnetic analysis

Pal,

Das

2024

Applied Materials Today

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Chemistry and Physics of Triple Perovskite Oxides: A Topical Review

De,

Kurian,

Solaiappan

et al. 2024

Chem. Mater.

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Triple perovskites have garnered research interest in recent years because of their diverse physical properties. This review article delves into the significance of triple perovskite oxides, an important variant of ABO 3 -type perovskites. It provides a comprehensive overview of recent advancements in understanding these A 3 B 3 O 9 /A 3 BB 2 ′O 9 oxide materials, emphasizing their chemical structure and its interplay with diverse properties such as magnetic and electric behaviors. A new framework is proposed to distinguish these functional materials from the other perovskite variants. In addition, the article explores potential technical applications including renewable energy devices, thermistors, optoelectronics, and triboelectric nanogenerators within the perovskite family.

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Exchange bias effect and inhomogeneous magnetism in 6H Ba3CoFeRuO9: Role of structural site disorder

Cited by 4 publications

References 54 publications

Magnetism and Exchange Bias Properties in Ba2ScRuO6

Magnetism and Exchange Bias Properties in Ba2ScRuO6

Exploring the origin of exchange bias and spin glass behavior in 6H hexagonal perovskite structure: Structural and magnetic analysis

Chemistry and Physics of Triple Perovskite Oxides: A Topical Review

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