Relaxor-like dielectric behavior in La2NiMnO6 double perovskite ceramics

Lin, Yiran; Chen, X.M.; Liu, Xiao Qiang

doi:10.1016/j.ssc.2009.02.028

Cited by 161 publications

(96 citation statements)

References 19 publications

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“…The dielectric response was determined using a broadband dielectric spectrometer (Turnkey Concept 50, Novelcontrol Technologies, Germany) at various frequencies (2 kHz to 4 MHz) from 123 to 300 K with an excitation voltage of 0.05 V. 6 with a relatively weak temperature dependence has been observed at high temperatures for LNMO ceramic, which is in agreement with other studies [6,9]. As the temperature decreases, its dielectric permittivity shows a sharp drop around 175 K. With the increase of Sr and Sb content, the plateau of dielectric permittivity decreases and the drop-off temperatures shift to higher values (190 K for x ¼ 0.08 and 260 K for 0.30).…”

supporting

confidence: 88%

“…3a, the giant dielectric constant of LNMO around room temperature mainly originates from the extrinsic electrode effect caused by the Schottky barriers formed between the metallic electrode and the semiconductive LNMO ceramic [21,23]. However, a different frequency dependence of dielectric constant has been reported for LNMO ceramic by Lin et al [9]. The dielectric constants at different temperatures have nearly merged to the value of 10 5 at low frequency and 10 2 at high frequency.…”

mentioning

confidence: 99%

“…In addition, a discernible dielectric step occurs around 130 K for the sample with x ¼ 0. Around [9]. This hopping introduces a large dipole movement in the LNMO unit cell [17] and the huge dielectric permittivity in the presence of alternative electric field [6,9,17].…”

mentioning

confidence: 99%

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Giant dielectric tunability properties of Sr and Sb co‐doped La₂NiMnO₆ ceramics induced by extrinsic contribution

Cao

Gao

et al. 2014

Physica Status Solidi (a)

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La 2-x Sr x NiMn 1-x Sb x O 6 (x ¼ 0, 0.08, 0.3) ceramics were prepared by a gel combustion method. Structural, dielectric, and dielectric tunable properties were systematically investigated. A phase transition from mixed monoclinic and rhombohedral phases to monoclinic phase occurs as Sr and Sb contents increase. Impedance and frequency dependence of dielectric constant have been employed to examine the extrinsic contribution to the dielectric properties. Results reveal that the electrode effect has an important influence on the giant dielectric permittivity and dielectric tunability around room temperature.

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supporting

confidence: 88%

mentioning

confidence: 99%

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Giant dielectric tunability properties of Sr and Sb co‐doped La₂NiMnO₆ ceramics induced by extrinsic contribution

Cao

Gao

et al. 2014

Physica Status Solidi (a)

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“…Los valores encontrados, se detallan en la Tabla 1. Como puede verse, están en buen acuerdo con los informados anteriormente para estos óxidos [39][40][41][42].…”

Section: Caracterización Por Drxpunclassified

“…En el caso de La 2 NiMnO 6 la interacción de super intercambio entre los cationes Ni 2+ y Mn 4+ es responsable del efecto llamado magneto-capacitancia, significativo para los materiales espintrónicos [40]. Según Lin y colaboradores [42], la conductividad del óxido La 2 NiMnO 6 sigue el mecanismo de salto de rango variable, y el desorden puede originarse a partir de las vacancias catiónicas distribuidas aleatoriamente. ** A partir de la ecuación de Scherrer, con el ancho de pico (a la mitad de la altura de pico).…”

Section: El Ordenamiento De Los Iones Niunclassified

Nanoestructura de perovskita doble La2NiMnO6 obtenido por ruta de citrato para supercapacitores

Bavio¹,

Tasca²,

Acosta³

et al. 2018

Matéria (Rio J.)

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RESUMEN En este trabajo se presenta el estudio de la perovskita doble La2NiMnO6 como material de electrodo para supercapacitores. El óxido mixto fue preparado por ruta de precursores citrato (CIT). La muestra fue calcinada 4 horas a 800 ºC. El material fue caracterizado por DRXP, espectroscopía FTIR y microscopía SEM. El comportamiento capacitivo del material fue evaluado mediante voltamperometría cíclica y mediciones galvanostáticas de carga/descarga en medio alcalino y ácido. Los perfiles I/V fueron registrados variando las velocidades de barrido de 10 a 100 mV/s. Las curvas galvanostáticas de carga/descarga se registraron a diferentes densidades de corriente, con valores entre 3 y 17 A/g. Los valores más altos de capacitancia fueron obtenidos en medio alcalino. Se encontraron valores de capacitancia específica de 1681 F/g a una densidad de corriente de 3 A/g, potencia y energía específica de 2903 W/kg y 378 Wh/kg, respectivamente. Mientras que en medio ácido los valores fueron de 492 F/g, 3225 W/kg, 137 Wh/kg de capacitancia, potencia y energía específica, respectivamente. Estos resultados obtenidos permiten considerar a las perovskitas dobles como potenciales materiales de electrodo para supercapacitores.

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Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries

Zhang

Nie

et al. 2023

Advanced Science

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Traditional lithium‐ion batteries cannot meet the ever‐increasing energy demands due to the unsatisfied graphite anode with sluggish electrochemical kinetics. Recently, the perovskite material family as anode attracts growing attention due to their advantages on specific capacity, rate capability, lifetime, and safety. Herein, a double perovskite La2MnNiO6 synthesized by solid‐state reaction method as a high‐performance anode material for LIBs is reported. La2MnNiO6 with an average operating potential of <0.8 V versus Li+/Li exhibits a good rate capability. Besides, the Li|La2MnNiO6 cells perform long cycle life without decay after 1000 cycles at 1C and a high cycling retention of 93% is observed after 3000 cycles at 6C. It reveals that this material maintains stable perovskite structure with cycling. Theoretical calculations further demonstrate the high electronic conductivity, low diffusion energy barrier, and structural stability of the lithiated La2MnNiO6. This study highlights the double perovskite type material as a promising anode for next‐generation batteries.

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Relaxor-like dielectric behavior in La2NiMnO6 double perovskite ceramics

Cited by 161 publications

References 19 publications

Giant dielectric tunability properties of Sr and Sb co‐doped La₂NiMnO₆ ceramics induced by extrinsic contribution

Giant dielectric tunability properties of Sr and Sb co‐doped La₂NiMnO₆ ceramics induced by extrinsic contribution

Nanoestructura de perovskita doble La2NiMnO6 obtenido por ruta de citrato para supercapacitores

Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries

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Relaxor-like dielectric behavior in La2NiMnO6 double perovskite ceramics

Cited by 161 publications

References 19 publications

Giant dielectric tunability properties of Sr and Sb co‐doped La2NiMnO6 ceramics induced by extrinsic contribution

Giant dielectric tunability properties of Sr and Sb co‐doped La2NiMnO6 ceramics induced by extrinsic contribution

Nanoestructura de perovskita doble La2NiMnO6 obtenido por ruta de citrato para supercapacitores

Double Perovskite La2MnNiO6 as a High‐Performance Anode for Lithium‐Ion Batteries

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Giant dielectric tunability properties of Sr and Sb co‐doped La₂NiMnO₆ ceramics induced by extrinsic contribution

Giant dielectric tunability properties of Sr and Sb co‐doped La₂NiMnO₆ ceramics induced by extrinsic contribution

Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries