Anomalous transport and magnetic properties induced by slight Cu valence alternation in layered oxytelluride BiCuTeO

Luo, Ye-Cheng; Lin, Dongqing; Zhang, Yanyan; Dong, Song‐Tao; Yao, Shu‐Hua; Lv, Yang‐Yang; Zhou, Jian; Chen, Y. B.

doi:10.1039/d0ra02763d

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…Among the layered oxychalcogenides, BiCuOX (X = S, Se, Te) was first identified by Kusainova et al [27]; it is composed of stacked (Bi 2 O 2 ) 2+ insulating layers and (Cu 2 X 2 ) 2− conducting layers. In the past 20 years, there have been many reports on a variety of novel and exciting properties of BiCuOX (X = S, Se, Te) phases, including magnetic properties [28][29][30], optical properties [31], transport properties [32,33] and thermoelectric (TE) properties [34,35]. For example, Karna et al reported the electrical and magnetic properties of slightly Cu-deficient BiCu 0.96 OSe using neutron and x-ray diffraction, AC magnetic susceptibility, magnetization and electric resistivity measurements [36].…”

Section: Introductionmentioning

confidence: 99%

A review of the properties, synthesis and applications of lanthanum copper oxychalcogenides

Li¹,

Wang²,

Zhang³

et al. 2022

J. Phys. D: Appl. Phys.

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The study of layered materials has been a significant and fascinating area due to their unique physical and chemical properties. Among various layered materials, lanthanum copper oxychalcogenides (LaCuOX (X=S, Se, Te)) have drawn a lot of attention of researchers. The study of LaCuOX was initially focused on the optoelectronic performance due to its excellent optical and electronic properties. Recently, it was found that the layered LaCuOX material also exhibits good thermoelectric properties, providing an opportunity to achieve high energy conversion efficiency through the thermoelectric effects. In this report, an overview of recent advances in LaCuOX research is provided, including crystal and electronic structure, synthetic methods, physical properties, practical applications as well as some strategies to optimize their transport properties. Theoretical and experimental results on LaCuOX crystals or thin films are both discussed in this report. Finally, the challenges and outlook for LaCuOX are evaluated based on current progress.

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Section: Introductionmentioning

confidence: 99%

A review of the properties, synthesis and applications of lanthanum copper oxychalcogenides

Li¹,

Wang²,

Zhang³

et al. 2022

J. Phys. D: Appl. Phys.

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A facile microwave-assisted synthesis of bismuth copper oxytelluride for optoelectronic and photodetection applications

Kumar,

Mohapatra,

Senapati

et al. 2023

FlatChem

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Superior Performance of 2D Layered Bimetallic Bismuth and Copper Oxytellurides for Supercapacitor Applications

Kumar,

Nechikott,

Nayak

et al. 2024

ACS Appl. Energy Mater.

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Widespread applications of 2D metal oxychalcogenide materials in the fields of semiconductors, thermoelectrics, and optoelectronics have raised the interest of the research community to explore more about these materials. The addition of metals and the preparation of different combinations of composite materials can effectively raise their utility. Here, the synthesis of bismuth (Bi)-and copper (Cu)-based layered oxytelluride materials is performed using the "microwave method" at a fixed power of 540 W and an irradiation time of 20 min. Good crystalline phases of the synthesized materials are obtained from the crystallographic studies, which agree well with the reported studies done previously. Morphological studies show the appearance of nanosheet-like structures in different synthesized samples. The Raman spectra of the samples demonstrate several vibrational modes. Chemical analysis confirms the valence states of the individual elements. The synthesized bismuth oxytelluride (BOT), copper oxytelluride (COT), and bismuth copper oxytelluride (BCOT) samples are investigated for supercapacitor applications. The electrochemical capacitive performance of BOT, COT, and BCOT is studied in the potential range of 0−0.6 V in an aqueous 2 M KOH electrolyte. While BOT and COT exhibit only 95 F g −1 (57 C g −1 ) and 158 F g −1 (94.8 C g −1 ), respectively, BCOT can provide a higher specific capacitance of 323 F g −1 (193.8 C g −1 ) at a specific current of 2 A g −1 , with excellent cycling stability of 90.5% after continuous 5000 cycles. Thus, this study emphasizes the better capacitive performance of bimetallic oxychalcogenides over monometallic oxychalcogenides.

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Anomalous transport and magnetic properties induced by slight Cu valence alternation in layered oxytelluride BiCuTeO

Abstract: A nonlinear Hall effect and weak antiferromagnetism are induced by mixed-valence Cu in BiCuTeO.

Cited by 3 publications

References 33 publications

A review of the properties, synthesis and applications of lanthanum copper oxychalcogenides

A review of the properties, synthesis and applications of lanthanum copper oxychalcogenides

A facile microwave-assisted synthesis of bismuth copper oxytelluride for optoelectronic and photodetection applications

Superior Performance of 2D Layered Bimetallic Bismuth and Copper Oxytellurides for Supercapacitor Applications

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