Alteration of magnetic behavior and microstructural distortion of EuMnO3 by partial substitution of Eu with monovalent Na

Nandy, A.; Kar, Tanusree; Bhattacharyya, S. R.; Das, Dipankar; Pradhan, S.K.

doi:10.1016/j.jallcom.2017.04.278

Cited by 2 publications

(2 citation statements)

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“…Usually, the lattice of perovskite lattice has distorted due to (1) octahedral tilting and/or (2) Jahn-Teller deformation (Siwach et al 2008). Nandy et al (2017) reported the influence of Na + substituting on internal lattice deformation of EuMnO 3 . The common atomic order of Eu 1−x Na x MnO 3 samples is presented in Fig.…”

Section: Inorganic Perovskite-type Oxidesmentioning

confidence: 99%

“…7 a, b MnO 6 tilting arrangement of atoms and combining c angles between asymmetrical bond Eu 1−x Na x MnO 3 samples, it is obvious that 6 atoms of oxygen settle in face-centered of the cubic and 1 manganese atom settle body-centered of the cubic outlines the MnO 6 octahedra, finally the corners were occupied via both of europium and sodium atoms. Adapted with permission from Nandy et al (2017). Copyright 2017, Elsevier ◂ The last step is classified into 2 steps.…”

Section: Influence Of Cation Substitution In A-site Of Perovskite Oxidesmentioning

confidence: 99%

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Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review

et al. 2020

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Supercapacitors are increasingly used for energy conversion and storage systems in sustainable nanotechnologies. Graphite is a conventional electrode utilized in Li-ion-based batteries, yet its specific capacitance of 372 mA h g −1 is not adequate for supercapacitor applications. Interest in supercapacitors is due to their high-energy capacity, storage for a shorter period and longer lifetime. This review compares the following materials used to fabricate supercapacitors: spinel ferrites, e.g., MFe 2 O 4 , MMoO 4 and MCo 2 O 4 where M denotes a transition metal ion; perovskite oxides; transition metals sulfides; carbon materials; and conducting polymers. The application window of perovskite can be controlled by cations in sublattice sites. Cations increase the specific capacitance because cations possess large orbital valence electrons which grow the oxygen vacancies. Electrodes made of transition metal sulfides, e.g., ZnCo 2 S 4 , display a high specific capacitance of 1269 F g −1 , which is four times higher than those of transition metals oxides, e.g., Zn-Co ferrite, of 296 F g −1. This is explained by the low charge-transfer resistance and the high ion diffusion rate of transition metals sulfides. Composites made of magnetic oxides or transition metal sulfides with conducting polymers or carbon materials have the highest capacitance activity and cyclic stability. This is attributed to oxygen and sulfur active sites which foster electrolyte penetration during cycling, and, in turn, create new active sites.

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Section: Inorganic Perovskite-type Oxidesmentioning

confidence: 99%

Section: Influence Of Cation Substitution In A-site Of Perovskite Oxidesmentioning

confidence: 99%