Cellulose-precursor synthesis of nanocrystalline Co{sub 0.5}Cu{sub 0.5}Fe{sub 2}O{sub 4} spinel ferrites

Journal Article · Wed Feb 15 04:00:00 EST 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2011.10.012· OSTI ID:22212434

Ounnunkad, Kontad ^[1]; Phanichphant, Sukon ^[1]

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1. Materials Science Research Center, Chiang Mai University, Chiang Mai 50200 (Thailand)

Highlights: Black-Right-Pointing-Pointer Synthesis of spinel copper cobalt nanoferrite particles from a cellulose precursor for the first time. Control of nanosize and properties of nanoferrites can take place by varying the calcining temperature. The simple, low cost, easy cellulose process is a choice of nanoparticle processing technology. -- Abstract: Nanocrystalline Cu{sub 0.5}Co{sub 0.5}Fe{sub 2}O{sub 4} powders were prepared via a metal-cellulose precursor synthetic route. Cellulose was used as a fuel and a dispersing agent. The resulting precursors were calcined in the temperature range of 450-600 Degree-Sign C. The phase development of the samples was determined by using Fourier transform infrared (FT-IR) spectroscopy and powder X-ray diffraction (XRD). The field-dependent magnetizations of the nanopowders were measured by vibrating sample magnetometer (VSM). All XRD patterns are of a spinel ferrite with cubic symmetry. Microstructure of the ferrites showed irregular shapes and uniform particles with agglomeration. From XRD data, the crystallite sizes are in range of 16-42 nm. Saturation magnetization and coercivity increased with increasing calcining temperature due to enhancement of crystallinity and reduction of oxygen vacancies.

• OSTI ID: 22212434
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 2 Vol. 47; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
CELLULOSE
COERCIVE FORCE
CRYSTALS
FERRITE
FERRITES
FOURIER TRANSFORMATION
INFRARED SPECTRA
MAGNETIC PROPERTIES
MAGNETIZATION
MICROSTRUCTURE
NANOSTRUCTURES
POWDERS
SPINELS
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION