Comprehensive study of the structural properties and dielectric responses of Ba(2-x)Sr(x)GdFeNb4O15 materials

被引：0
作者：
Farhan, J. [1 ]
Laaraj, A. [1 ]
Bahassan, K. [1 ]
Majdoubi, H. [1 ,2 ]
Chakir, A. [3 ]
El Bouari, A. [3 ]
Lachhab, T. [1 ]
Adhiri, R. [1 ]
机构：
[1] Hassan II Univ Casablanca, Fac Sci Ben MSick, Lab Engn & Mat LIMAT, Casablanca, Morocco
[2] Mohamed VI Polytech Univ, Mat Sci & Nanoengn, Ben Guerir, Morocco
[3] Hassan II Univ Casablanca, Fac Sci Ben MSick, Lab Phys Chem Appl Mat LPCMA, Casablanca, Morocco
来源：
FERROELECTRICS | 2024年 / 618卷 / 04期
关键词：
Ferroelectric materials; tetragonal tungsten bronze (TTB); solid-state reaction; structural; dielectric parameters; RAMAN; SUBSTITUTION; TRANSITION; SCATTERING; SPECTRA; PHASES; EARTH; LEAD;
D O I：
10.1080/00150193.2023.2300608
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A comprehensive investigation has been conducted on Ba(2-x)Sr(x)GdFeNb4O15 powders. These powders were synthesized through the conventional solid-state reaction. X-ray diffraction analysis at room temperature has demonstrated that the samples adopt the TTB-structure, exhibiting the space-group P4/mbm. The Raman spectra of the samples exhibit remarkable similarity, yet distinct bands at different wave numbers, indicative of the varying modes of the MO6 octahedra. The dielectric studies have uncovered intriguing findings, including a high dielectric constant and a broad permittivity peak. Remarkably, the Curie temperature varies with the substitution rate, yet remains frequency-independent, a clear indication of these materials' classical ferroelectric behavior.
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收藏
页码：970 / 982
页数：13
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