Structural, Magnetic, and Photoluminescence Properties of BiFeO{sub 3}: Er-Doped Nanoparticles Prepared by Sol-Gel Technique

Journal Article · Mon Apr 15 04:00:00 EDT 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-018-4789-2· OSTI ID:22921324

Kumar, K. Sunil; Ramanadha, M.; Sudharani, A.; Ramu, S.

A simple sol-gel technique is used to synthesize zero-dimensional pure and Er-doped BiFeO{sub 3} (BFO) nanoparticles. The effect of Er dopant on morphology, structure, optical, magnetic, and photoluminescence properties of single-phase BFO was studied. X-ray diffraction (XRD) studies reveal that the structural phase transformation is noticed from rhombohedral to orthorhombic with substitution of Er to pure BFO. From scanning electron microscopy (SEM) and transmission electron microscopy (TEM), morphology of the synthesized samples were spherical in shape. Agglomeration and particle size reduced with substitution of Er, particle size is around ∼ 30 nm. Energy-dispersive analysis of X-ray (EDAX) spectra confirms the presence of selective elements in synthesized samples. Fourier transform infrared spectra (FTIR) confirms that all the bonds strongly correspond to BFO. The substitution of Er in BFO nanoparticles also demonstrates a strong reduction in optical band-gap energy compared with pure BFO. Magnetization studies were carried out by using vibrating sample magnetometer (VSM), and the saturation magnetization increases with increasing substitution of Er. A photoluminescence (PL) spectrum reveals that the substitution of Er suppressed the recombination of electron-hole pairs.

• OSTI ID: 22921324
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 4 Vol. 32; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
BISMUTH COMPOUNDS
COMPARATIVE EVALUATIONS
DOPED MATERIALS
FERRITES
FOURIER TRANSFORMATION
INFRARED SPECTRA
MAGNETIZATION
NANOPARTICLES
ORTHORHOMBIC LATTICES
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
TERBIUM ADDITIONS
TRANSMISSION ELECTRON MICROSCOPY
TRIGONAL LATTICES
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION