New Universality Class Associated with Jahn–Teller Distortion and Double Exchange

Abdulvagidov, Sh. B.; Djabrailov, Sh. Z.; Abdulvagidov, B.; Курбаков, А. И.

doi:10.1134/s1063776120020107

Cited by 3 publications

(1 citation statement)

References 69 publications

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“…In addition, it is interesting to note that a few of the q values do not show any change. The overall significance of these observed changes either results in a different space group symmetry or the same space group symmetry accompanied by moderate polyhedral distortion. − The shift in q values refers to a change in the unit cell size; for example, the observed blueshift in the q value suggests a larger unit cell of CTO compared to NTO (Table ). Meanwhile, peak splitting usually results in polyhedral distortion, preserving the same symmetry (Table ).…”

Section: Results and Discussionmentioning

confidence: 99%

Unique Structure-Induced Magnetic and Electrochemical Activity in Nanostructured Transition Metal Tellurates Co_1 – xNi_xTeO₄ (x = 0, 0.5, and 1)

Patel

Panda

Rani

et al. 2020

ACS Appl. Energy Mater.

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The emergence of cutting-edge nanomaterials with rational design, primarily with a structure-driven functionality, is a prerequisite for achieving advancement in current energy scenarios. This report presents facile sol−gel-grown, first-of-its-kind, nanostructured transition metal tellurates Co 1 − x Ni x TeO 4 (x = 0, 0.5, and 1). These are a class of promising magnetic and energy storage materials. Along with electronic structure signatures of individual nanocrystals through electron energy loss spectroscopy, microstructural and high-resolution synchrotron X-ray diffraction analysis results in a new structural model, which further sheds light on the structure-driven performances of these tellurates. Antiferromagnetic interactions observed at ∼48, 58, and 76 K for x = 0, 0.5, and 1, respectively, surpass numerous antiferromagnets. The robust electrochemical activity of NiTeO 4 against Li metal shows a high reversible specific capacity of ∼1271 mA h g −1 in the first discharge cycle, with 80% capacity retention over long-term cycles. Thorough ex situ X-ray absorption fine-structure spectroscopy and transmission electron microscopy investigations performed on several charging/discharging cycled electrodes establish a conversion-based battery reaction mechanism. The resulting anode, thus, displays unprecedentedly high stability in comparison to existing transition metal-based anode materials for Li-ion batteries. The observed outcomes are further understood to stem from different degrees of the Jahn−Teller-like z-out and z-in distortion in the respective d orbitals of Co 2+ and Ni 2+ .

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Section: Results and Discussionmentioning

confidence: 99%

Unique Structure-Induced Magnetic and Electrochemical Activity in Nanostructured Transition Metal Tellurates Co_1 – xNi_xTeO₄ (x = 0, 0.5, and 1)

Patel

Panda

Rani

et al. 2020

ACS Appl. Energy Mater.

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Universal scaling of charge-order melting in the magnetic field–pressure–temperature landscape

2020

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Negative Thermal Expansion Properties of Sm0.85Sr0.15MnO3-δ

Li¹,

Zhang²,

Li³

et al. 2022

J. Compos. Sci.

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A novel negative thermal expansion (NTE) material composed of Sm0.85Sr0.15MnO3-δ was synthesized using the solid-state method. By allowing Sr2+ to partially replace Sm3+ in SmMnO3, the ceramic material Sm0.85Sr0.15MnO3-δ exhibits NTE properties between 360K and 873K, and its average negative thermal expansion coefficient was −10.08 × 10−6/K. The structure of Sm0.85Sr0.15MnO3-δ is orthogonal, the space group is pbnm, the morphology is regular, and the grain size is uniform. The results of X-ray diffraction and XPS (X-ray photoelectron spectroscopy) suggest that the NTE phenomenon is related to the electron transfer of Mn ions. With the increase in temperature, Mn4+ is rapidly transformed into Mn3+, accompanied by Mn4+O6 octahedron distortion and oxygen defects. It was found that the sample volume continually decreased at the same time.

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New Universality Class Associated with Jahn–Teller Distortion and Double Exchange

Cited by 3 publications

References 69 publications

Unique Structure-Induced Magnetic and Electrochemical Activity in Nanostructured Transition Metal Tellurates Co_1 – xNi_xTeO₄ (x = 0, 0.5, and 1)

Unique Structure-Induced Magnetic and Electrochemical Activity in Nanostructured Transition Metal Tellurates Co_1 – xNi_xTeO₄ (x = 0, 0.5, and 1)

Universal scaling of charge-order melting in the magnetic field–pressure–temperature landscape

Negative Thermal Expansion Properties of Sm0.85Sr0.15MnO3-δ

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New Universality Class Associated with Jahn–Teller Distortion and Double Exchange

Cited by 3 publications

References 69 publications

Unique Structure-Induced Magnetic and Electrochemical Activity in Nanostructured Transition Metal Tellurates Co1 – xNixTeO4 (x = 0, 0.5, and 1)

Unique Structure-Induced Magnetic and Electrochemical Activity in Nanostructured Transition Metal Tellurates Co1 – xNixTeO4 (x = 0, 0.5, and 1)

Universal scaling of charge-order melting in the magnetic field–pressure–temperature landscape

Negative Thermal Expansion Properties of Sm0.85Sr0.15MnO3-δ

Contact Info

Product

Resources

About

Unique Structure-Induced Magnetic and Electrochemical Activity in Nanostructured Transition Metal Tellurates Co_1 – xNi_xTeO₄ (x = 0, 0.5, and 1)

Unique Structure-Induced Magnetic and Electrochemical Activity in Nanostructured Transition Metal Tellurates Co_1 – xNi_xTeO₄ (x = 0, 0.5, and 1)