Synthesis, optical and magnetic behavior of (BiFeO3)1-x(α-Fe2O3)x nanocomposites

被引：14
|
作者：
Baqiah, H. [1 ]
Talib, Z. A. [1 ]
Shaari, A. H. [1 ]
Tamchek, N. [1 ]
Ibrahim, N. B. [2 ]
机构：
[1] Univ Putra Malaysia, Phys Dept, Fac Sci, Serdang 43400, Selangor, Malaysia
[2] Univ Kebangsaan Malaysia, Sch Appl Phys, Fac Sci & Technol, Bangi 43600, Selangor, Malaysia
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2018年 / 231卷
关键词：
BiFeO3; alpha-Fe2O3; Nanocomposite; Microstrain; Band gap; Magnetization; ALPHA-FE2O3; NANOPARTICLES; PHOTOCATALYTIC PROPERTIES; THIN-FILMS; BIFEO3; PHOTOLUMINESCENCE; NANOSTRUCTURES; ENHANCEMENT; INTERFACE;
D O I：
10.1016/j.mseb.2018.03.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(BiFeO3)(1-x)(alpha-Fe2O3)(x) nanocomposites were synthesized from dried gels of BiFeO3 and alpha-Fe2O3. Samples with x = (0.00 (BiFeO3), 0.25, 0.50 and 1.00 (alpha-Fe2O3)) were studied using X-rays diffractions (XRD), UV-vis spectroscopy, photoluminescence spectroscopy (PL), electron spin resonance (ESR) and vibrating sample magnetometer (VSM). Amounts of alpha-Fe2O3 phase were 23 and 35% for samples x = 0.25 and 0.50, respectively. Microstrain of BiFeO3 phase tended to decrease with increasing alpha-Fe2O3. Optical band gap reduced from 2.42 eV for BiFeO3 to 2.35 eV for sample x = 0.25 and then increased to 2.56 eV for sample x = 0.50. From PL, intensity of near band emission peak of BiFeO3 increased with increasing alpha-Fe2O3 content. From ESR and VSM, the g value and magnetization saturation were enhanced with embedding of alpha-Fe2O3 into BiFeO3.
引用
收藏
页码：5 / 10
页数：6
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