NDLI: Preparation, spectroscopic and thermal analysis of hexa-hydrazine nickel cobalt ferrous succinate precursor and study of solid-state properties of its nanosized thermal product, Ni$_{0.5}$Co$_{0.5}$Fe$_{2}$O$

Content Provider	Springer Nature Link
Author	Coutinho, Daniel M. Verenkar, V. M. S.
Copyright Year	2016
Abstract	Nickel cobalt ferrite, Ni$_{0.5}$Co$_{0.5}$Fe$_{2}$O$_{4}$, has been prepared by precursor combustion technique from hexa-hydrazine nickel cobalt ferrous succinate precursor. The precursor was characterized by chemical analysis, CHNS analysis, infrared spectroscopy, TG–DTA and mass loss studies. The thermal data show how the precursor decomposes in four steps to give stable ferrite phase. The precursor decomposes autocatalytically once initially ignited, to give the ‘as-prepared’ nano-spinel ferrite. The X-ray diffraction analysis reveals single cubic spinel phase structure. The infrared measurements between 4000 and 350 cm$^{−1}$ confirmed the intrinsic cation vibrations of the spinel structure. The SEM image clearly shows the nanosized nature of the ferrite. The dielectric constant and loss tangent are found to decrease with increase in frequency which is due to Maxwell–Wagner interfacial polarization. The loss tangent shows a relaxation peak at ~1 kHz. The variation of DC electrical resistivity with temperature indicates semiconductor behaviour. The temperature- and field-dependent magnetization data of ‘as-prepared’ ferrite reveal that the lattice has either a canted or partially misaligned spin structure due to the nanosized nature of the ferrite.
Starting Page	807
Ending Page	817
Page Count	11
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	128
Issue Number	2
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-12-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hexa-hydrazine metal succinate precursor Thermal analysis Auto catalytic decomposition Magnetic nanoparticles Dielectric relaxation Magnetic properties Magnetic anisotropy Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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