Enhancing SrBi2Nb2O9 ceramics: The role of neodymium substitution in structural, dielectric, and ferroelectric properties

被引：1

作者：

Anasser, Imane ^{[1
,2
]}

Harech, Mohamed Amine ^{[1
]}

Labbilta, Tariq ^{[1
,2
]}

Barbouchi, Abdelkhalek ^{[3
]}

Afqir, Mohamed ^{[1
]}

Hadouch, Youness ^{[4
,5
,6
]}

Lakouader, Afaak ^{[5
,6
]}

Mezzane, Daoud ^{[5
,6
]}

Zegzouti, Abdelouahad ^{[1
]}

Daoud, Mohamed ^{[1
]}

机构：

[1] Cadi Ayyad Univ, Fac Sci Semlalia, Chem Dept, Lab Mat Sci & Proc Optimizat, Marrakech 40000, Morocco

[2] Reminex Res Ctr, Site Guemassa, Marrakech 469, Morocco

[3] Cadi Ayyad Univ, Dept Chem, Appl Chem & Biomass Lab, Marrakech, Morocco

[4] Jozef Stefan Inst, Condensed Matter Phys Dept F5, Jamova Cesta 39, Ljubljana 1000, Slovenia

[5] Univ Picardie Jules Verne, LPMC, Sci Pole, 33 Rue St Leu, F-80039 Amiens 1, France

[6] Cadi Ayyad Univ, Fac Sci & Technol, IMED Lab, BP 549, Marrakech, Morocco

来源：

CERAMICS INTERNATIONAL | 2025年 / 51卷 / 01期

关键词：

Neodymium; SBN ceramics; Structural properties; Dielectric properties; Ferroelectric properties;

D O I：

10.1016/j.ceramint.2024.11.101

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study investigates the impact of neodymium substitution for bismuth in SrBi2Nb2O9 (SBN) ceramics, a potential lead-free alternative for ferroelectric applications. X-ray diffraction analysis reveals a decrease in lattice parameters and volume with increasing Nd content. Scanning electron microscopy examines the influence of neodymium on grain morphology, showing a transition from characteristic SBN plate-like grains to a mix of plates and micro-spheres. Dielectric properties are evaluated, showing an increase in room-temperature permittivity for Nd-doped samples compared to the undoped counterparts. Additionally, the influence of Nd doping on relaxor ferroelectric behavior is studied. The Curie temperature (Tc) increases with Nd concentration, while the temperature dependence of relaxation time weakens. Ferroelectric properties exhibit significant changes due to Nd doping. Inverse permittivity versus temperature (epsilon(-1)(r) vs. T) measurements suggest an unconventional response, potentially due to lattice strain induced by the larger ionic radius of Nd. The potential influence of doping concentration on the order of the ferroelectric transition is also explored. Overall, neo-dymium substitution in SBN ceramics enhances their ferroelectric properties, making them promising for advanced electronic applications.

引用

页码：1204 / 1213

页数：10

共 38 条

[1] Influence of Yb-doping on structural, dielectric and electrical properties of SrBi2Nb2O9 ceramics prepared through the molten-salt method [J].