Raman spectroscopy and evidence of magnetic transition in 0.9BiFeO3-0.1Ba0.8Sr0.2TiO3 ceramic

被引：9
|
作者：
Khelifi, H. [1 ]
Zouari, I. [1 ]
Habouti, S. [3 ]
Abdelmoula, N. [1 ]
Mezzane, D. [2 ]
Khemakhem, H. [1 ]
Es-Souni, M. [3 ]
机构：
[1] Univ Sfax, Fac Sci Sfax, Lab Ferroelect Mat, LR,Phys Math & Applicat R13ES22, Sfax 3018, Tunisia
[2] FSTG Univ Cadi Ayyad Marrakech, LMCN, Marrakech, Morocco
[3] Univ Appl Sci, Surface & Thin Film Technol, Kiel, Germany
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 638卷
关键词：
Dielectric; Magnetic; Perovskite; Ceramic; BIFEO3; TEMPERATURE; SCATTERING;
D O I：
10.1016/j.jallcom.2015.02.211
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A 0.9BiFeO(3)-0.1Ba(0.8)Sr(0.2)TiO(3) ceramic is synthesized by conventional solid-state reaction method and investigated by structural, dielectric, thermal, Raman spectra and magnetization properties. The 0.9BiFeO(3)-0.1Ba(0.8)Sr(0.2)TiO(3) is crystallized in rhombohedral distorted perovskite structure with space group R3c. The dielectric loss is investigated over wide range of temperature at 100 kHz. During its evolution, an anomaly is observed at similar to 300 degrees C which corresponds to T-N (antiferromagnetic transition temperature). Besides, it is confirmed by DSC measurement. A magnetic property is confirmed by the temperature dependence of magnetization (M-T) under an applied magnetic field of 0.05 T. That revealed an antiferromagnetic transition of 0.9BiFeO(3)-0.1Ba(0.8)Sr(0.2)TiO(3) ceramic. The latter confirms which was previously mentioned. Furthermore, these results reveal considerable spectral changes in the vicinity of the Neel temperature T-N. Finally, this shift is discussed through structural, dielectric, thermal, vibrational and magnetic combination near the TN phase. (C) 2015 Elsevier B.V. All rights reserved.
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页码：50 / 54
页数：5
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