Analyse of structural and electrical properties of NaBa(2-x)Nd2x/3Nb5O15 solid solution with (0 < x <1)

被引：3
作者：
Belarbi, M. [1 ,2 ]
Benyoussef, M. [1 ]
Tamraoui, Y. [3 ]
Manoun, B. [3 ,4 ]
Cantaluppi, A. [1 ]
Favry, D. [1 ]
Taibi, K. [5 ]
El Marssi, M. [1 ]
Lahmar, A. [1 ]
机构：
[1] Lab Phys La Matiere Condensee LPMC, 33 Rue St Leu, F-80039 Amiens, France
[2] Univ Ibn Khaldoun, Fac Sci Matiere, Lab Genie Phys LGP, Tiaret, Algeria
[3] Hassan First Univ Settat, FST, Rayonnement Matiere & Instrumentat, S3M, Settat 26000, Morocco
[4] Mohammed VI Polytech Univ, Mat Sci & Nanoengn, Lot 660 Hay Moulay Rachid, Ben Guerir, Morocco
[5] Univ Sci & Technol Houari Boumed, Fac Chim, Lab Cristallog Thermodynam, BP32, Algiers 16111, Algeria
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2022年 / 277卷
基金：
欧盟地平线“2020”;
关键词：
Tetragonal tungsten bronze; Crystal structure; Dielectric; Complex impedance spectroscopy; Raman spectroscopy; DIELECTRIC-PROPERTIES; FERROELECTRIC PROPERTIES; MAGNETIC HYPERTHERMIA; PHYSICAL-PROPERTIES; CRYSTAL-STRUCTURES; RAMAN; SPECTROSCOPY; TEMPERATURE; IMPEDANCE; CERAMICS;
D O I：
10.1016/j.matchemphys.2021.125513
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structural and electrical properties of NaBa(2-x)Nd2x/3Nb5O15 ceramics were reported. All samples were prepared by the conventional solid-state reaction. A Room temperature X-ray study has allowed identifying the stabilization of tetragonal Tungsten Bronzes (TTB) structure with P4bm as space group for low Nd3+ concentration, whereas a centrosymmetric space group P4/mbm has been revealed for the high concentration. The dielectric study carried out on the prepared ceramics showed that the studied system undergo a behavior change from normal ferroelectric to a relaxor one with the increasing Neodymium amount. The complex impedance spectroscopy highlighted a thermally activated relaxation process in our samples. A short-range relaxation is proposed for x = 0.3 sample, while a possible coexistence of both localized and long-range relaxation for x = 1. Further, the Nyquist plot of the impedance is given for the low and higher Nd3+ samples and a simple model is proposed to fit the results.
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页数：14
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