Synthesis and characterization of nanocrystalline Zn ferrites substituted with Ni

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2011.05.002· OSTI ID:22212227

Slatineanu, Tamara; Iordan, Alexandra Raluca ^[1]; Caltun, Ovidiu Florin; Gafton, Vasilica; Leontie, Liviu ^[2]

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1. Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Boulevard 700506 (Romania)
2. Faculty of Physics, Alexandru Ioan Cuza University of Iasi, 11 Carol I Boulevard 700506 (Romania)

Highlights: {yields} Ni{sub x}Zn{sub 1-x}Fe{sub 2}O{sub 4} are synthesized by sol-gel auto-combustion method using tartaric acid. {yields} XRD patterns reveal spinel structure and the crystallite size is max. 40 nm. {yields} SEM images for Ni{sub 0.6}Zn{sub 0.4}Fe{sub 2}O{sub 4} confirm the nano-scale crystallite size. {yields} The highest value of samples porosity belongs to Ni{sub 0.6}Zn{sub 0.4}Fe{sub 2}O{sub 4}. {yields} The maximum value of the magnetization is 63 emu/g for Ni{sub 0.8}Zn{sub 0.2}Fe{sub 2}O{sub 4}. -- Abstract: Nanocrystalline powders of nickel substituted zinc ferrite with general formula Ni{sub x}Zn{sub 1-x}Fe{sub 2}O{sub 4} (x = 0, 0.2, 0.4, 0.6, 0.8, 1) have been synthesized via sol-gel auto-combustion method using tartaric acid as combustion-complexing agent. Samples were sintered at 773 K and 973 K in static air atmosphere. The absence of the organic phase and the spinel formation were monitored by using Fourier transform infrared spectroscopy. The structure and crystallite size were analyzed from X-ray diffraction data revealing spinel mono-phase formation in the range of nanometric crystallite size confirmed also through scanning electron microscopy. Mean size of crystallites lay in the range 20-40 nm. The influence of nickel content on the microstructure was investigated considering the crystallite size, distance between adjacent crystal planes, lattice parameter and porosity. The variation of magnetic properties of the samples was studied by using vibrating samples magnetometer and discussed considering the proposed cation distribution, relative bond angles and canting angles. The highest maximum value of the magnetization (63 emu/g) was found for Ni{sub 0.8}Zn{sub 0.2}Fe{sub 2}O{sub 4}.

• OSTI ID: 22212227
• Journal Information: Materials Research Bulletin, Vol. 46, Issue 9; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION SPECTROSCOPY
BOND ANGLE
CHELATING AGENTS
CRYSTALS
FERRITE
FERRITES
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
LATTICE PARAMETERS
MAGNETIC PROPERTIES
MAGNETIZATION
MICROSTRUCTURE
NANOSTRUCTURES
NICKEL
POROSITY
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
SPINELS
SYNTHESIS
TARTARIC ACID
X-RAY DIFFRACTION