Optical and magnetic properties of perovskite materials: Ba0.3La0.7Ti0.3Fe0.7O3 and Ba0.1La0.9Ti0.1Fe0.9O3

被引：11

作者：

El Bachraoui, Fatima ^{[1
,2
]}

Chchiyai, Zakaria ^{[2
]}

Tamraoui, Youssef ^{[1
]}

El Moussaoui, Hassan ^{[3
]}

Alami, Jones ^{[1
]}

Manoun, Bouchaib ^{[1
,2
]}

机构：

[1] Univ Mohammed VI Polytech, Mat Sci Energy & Nanoengn Dept MSN, Benguerir 43150, Morocco

[2] Hassan First Univ Settat, FST, Rayonnement Matiere & Instrumentat, S3M, Settat 26000, Morocco

[3] Moroccan Fdn Adv Sci Innovat & Res, Mat & Nanomat Ctr, Rabat 10100, Morocco

来源：

JOURNAL OF RARE EARTHS | 2022年 / 40卷 / 04期

关键词：

Perovskites; Co-substitution effect; Phase transition; Band gap; Ferromagnetic; Visible light absorption; PHASE-TRANSITIONS; LAFEO3; CATHODE;

D O I：

10.1016/j.jre.2021.05.008

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Structural, optical and magnetic properties are reported for new synthesized perovskite materials. Ba0.3La0.7Ti0.3Fe0.7O3 and Ba0.1La0.9Ti0.1Fe0.9O3 compositions were prepared via solid state reaction. Xray analysis confirms that both compositions show feature of perovskite structure. Rietveld refinement method was used to confirm the phase formation and investigate the structure and space group. The study demonstrates the formation of orthorhombic structure with Pnma space group for Ba0.3La0.7Ti0.3Fe0.7O3 while the composition Ba0.1La0.9Ti0.1Fe0.9O3 structure adopts Pbnm symmetry. UV-vis spectroscopy measurements show very broad and intense UV-visible light absorption, the estimated band gap ranges between 2.07 and 2.15 eV. Magnetic measurements were carried out for the compositions Ba0.3La0.7Ti0.3Fe0.7O3 and Ba0.1La0.9Ti0.1Fe0.9O3. The hysteresis loops of both samples at 300 and 10 K show a strong ferromagnetic behavior. The temperature dependent magnetization at 0.05 T under field-cooled (FC) and zero field cooled (ZFC) modes shows magnetic frustration or spin glass-like behavior. (c) 2021 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.

引用

页码：652 / 659

页数：8

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