Structural, dielectric and energy storage properties of Neodymium niobate with tetragonal tungsten bronze structure

被引：16

作者：

Belarbi, M. ^{[1
]}

Tamraoui, Y. ^{[2
]}

Manoun, B. ^{[2
,3
]}

Cantaluppi, A. ^{[1
]}

Gagou, Y. ^{[1
]}

Taibi, K. ^{[4
]}

El Marssi, M. ^{[1
]}

Lahmar, A. ^{[1
]}

机构：

[1] Lab Phys Matiere Condensee LPMC, 33 Rue St Leu, F-80039 Amiens, France

[2] Mohammed VI Polytech Univ, Mat Sci & Nanoengn, Lot 660 Hay Moulay Rachid, Ben Guerir, Morocco

[3] Univ Hassan 1Er, Lab Rayonnement Matiere & Instrumentat, S3M, FST Settat, Settat, Morocco

[4] Univ Sci & Technol Houari Boumediene, Fac Chim, Lab Cristallog Thermodynam, BP32, Algiers 16111, Algeria

来源：

PHYSICA B-CONDENSED MATTER | 2021年 / 618卷

关键词：

Tetragonal tungsten bronze; Structure; Dielectric; Energy storage; Raman spectroscopy; RAMAN-SPECTRA; FERROELECTRIC PROPERTIES; PHASE-TRANSITIONS; RARE-EARTH; LEAD; SPECTROSCOPY; DIFFRACTION; CERAMICS; CRYSTALS; GROWTH;

D O I：

10.1016/j.physb.2021.413185

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The present work reports the effect of Nd3+ substitution on the structural, dielectric and energy storage properties of the polycrystalline Ba2NaNb5O15(BNN) ceramics. The ferroelectric lead-free Ba2Na1-xNdx/3Nb5O15 ceramics were prepared by conventional solid-state reaction technique. The room temperature X-ray study and Raman spectroscopy investigations have allowed evidencing the stabilization of a tetragonal tungsten bronze structure with P4bm space group for all the studied compounds. Dielectric study carried out on the prepared ceramics has permitted to determine the temperature of phase transitions (Tc). It was found that the dielectric constant increased with increasing the amount of Nd in BNN matrix. Room temperature energy storage property was determined using P-E hysteresis loops. The optimum discharge density was found for the composition x = 0.7 with Wrec = 18.1 mJ cm-3) at 1 Hz. Finally, the dynamic of phase transition was approached using thermal Raman spectroscopy investigations.

引用

页数：9

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