Tunable magnetization and relaxor ferroelectric nature in cobalt-substituted tungsten bronze Ba4Nd2Fe2Nb8O30

Zuo, Xuzhong; Hui, Zhenzhen; He, Enjie; Qin, Yanfu; Guan, Banggui; Zhang, Peng; Yang, Jie; Zhu, Xuebin; Dai, Jianming

doi:10.1016/j.jallcom.2018.04.312

Cited by 12 publications

(1 citation statement)

References 42 publications

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“…[8] Few lead-free TB niobates with Fe at B sites are found suitable for multiferroic applications. [9][10][11][12][13] Particularly, it has been discovered that the TB niobates' rare earth ions in the A site are particularly effective at enhancing the dielectric characteristics. [14] Being the first research group to explore the dielectric and electrical properties in TB structure niobates with single to triple valent A site cations (including rare earth) and tetra to hexavalent B site cations, we have continued from toxic lead based to lead free.…”

Section: Introductionmentioning

confidence: 99%

Dielectric and Electrical Behavior of Apraseodymium Based Tungsten Bronze Ceramics

Devi,

Behera,

Moharana

et al. 2024

Macromolecular Symposia

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The ceramic oxide Na2Ba2Pr2W2Ti4Nb4O30 (NBPWTN) is prepared by a mechanical mixed oxide route. The compound formation and the phase are concluded from the x‐ray diffraction pattern taken at room temperature (XRD). The uniform distribution of grains of various sizes with negligible voids is studied from scanning electron micrograph of the sample pellet. The presence of dielectric dispersion and ferroelectric phase in the material is observed from the temperature‐dependent dielectric parameters at selected frequencies. The existence of ferroelectricity in the material is further confirmed by the room temperature hysteresis loop. Impedance spectroscopic studies informed about the correlation between the microstructure and electrical behavior. The frequency variation of AC conductivity refers to Jonscher's law. The temperature variation of frequency exponent term n indicates OLPT (overlapping large polaron‐tunneling) model of the conduction mechanism in the sample. NBPWTN is a strong candidate for applications involving thermistor‐related devices because of the temperature dependency of resistance. The value of temperature sensitivity coefficient β in our investigation is achieved between 2000 and 11 000 K, confirming that the material has a high‐temperature stability property and is ideal for high‐temperature electronics applications. The high room temperature dielectric constant value of the ceramic (around 500) is useful for dielectric capacitor applications.

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Section: Introductionmentioning

confidence: 99%

Dielectric and Electrical Behavior of Apraseodymium Based Tungsten Bronze Ceramics

Devi,

Behera,

Moharana

et al. 2024

Macromolecular Symposia

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Effect of rare earth on dielectric properties of Mn contained unfilled tungsten bronze ceramics

Sun

Guo

et al. 2019

J Mater Sci: Mater Electron

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Preparation and dielectric properties of co-contained unfilled tungsten bronze ceramics Ba4RCo0.5Nb9.5O30

Guo

Zhang

et al. 2021

J Mater Sci: Mater Electron

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In this study, Ba4RCo0.5Nb9.5O30 (R = La, Nd, Sm, Eu) (BRCN) ceramics were synthesized using a high-temperature solid-state reaction. The effects of rare-earth ions with different ionic radii at A sites on the phase structure, microstructure, and dielectric properties of ceramics have been systematically studied. The full profile refinement XRD results show that all ceramic samples are tetragonal tungsten bronze

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Tunable magnetization and relaxor ferroelectric nature in cobalt-substituted tungsten bronze Ba4Nd2Fe2Nb8O30

Cited by 12 publications

References 42 publications

Dielectric and Electrical Behavior of Apraseodymium Based Tungsten Bronze Ceramics

Dielectric and Electrical Behavior of Apraseodymium Based Tungsten Bronze Ceramics

Effect of rare earth on dielectric properties of Mn contained unfilled tungsten bronze ceramics

Preparation and dielectric properties of co-contained unfilled tungsten bronze ceramics Ba4RCo0.5Nb9.5O30

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