XRD and FTIR analysis of bismuth substituted cobalt ferrite synthesized by co-precipitation method

In this paper we describe the synthesis of a core-shell material using yttrium superconducting ceramic material (YBCO) and cobalt ferrite nanoparticles in order to obtain a nanostructured material with magnetic properties. The advantages of such material aim the selective deposition of nanofilms oriented in magnetic fields. To obtain this core-shell material, the solutions of the nitrates were first obtained by dissolving the salts in demineralised water. The suspension with cobalt ferrite nanoparticles was obtained by co-precipitation method. To obtain YBa2Cu3O7-�- coated magnetic nanoparticles by autocombustion reaction the solutions of nitrates and citric acid were used. The ratio of the metal ions: Y:Ba:Cu was 1:2:3, and between the oxidant and the reducing agent was used a citrate / nitrate mass ratio equal with 0.7. The final material was analyzed by X-ray diffraction (XRD), electronic scanning microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), high resolution transmission electron microscopy (HRTEM) and vibrating sample magnetometer (VSM).

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Synthesis and characterization study of dual phase mixed zinc cobalt ferrite nanoparticles prepared via chemical co-precipitation method

Advanced Materials Proceedings ◽

10.5185/amp2018/6997 ◽

2021 ◽

Vol 3 (8) ◽

pp. 517-520

Author(s):

Rohit R. Powar ◽

Ashok B. Gadkari ◽

Pravina B. Piste ◽

Dnyandevo N. Zambare

Keyword(s):

Cobalt Ferrite ◽

Ferrite Nanoparticles ◽

Precipitation Method ◽

Synthesis And Characterization ◽

Dual Phase ◽

Cobalt Ferrite Nanoparticles ◽

Characterization Study ◽

Co Precipitation

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Investigating the Kinetics of the Thermolysis of 3-nitro-2,4-dihydro-3H-1,2,4-triazol-5-one (NTO) and Reduced Size NTO the Presence of Cobalt Ferrite Additive

10.21203/rs.3.rs-1062980/v1 ◽

2021 ◽

Author(s):

pragnesh N Dave ◽

Ruksana Sirach ◽

Riddhi Thakkar ◽

M P Deshpande

Keyword(s):

Thermal Decomposition ◽

Energetic Materials ◽

Cobalt Ferrite ◽

Simultaneous Thermal Analysis ◽

Isoconversional Methods ◽

Decomposition Temperature ◽

Precipitation Method ◽

Thermal Decomposition Temperature ◽

Highly Sensitive ◽

Co Precipitation

Abstract Less sensitive high energetic materials (HEMs) are explored as a potential replacement of highly sensitive HEMs in propellants, and explosive applications. More research have been devoted to improve the thermal decomposition of such a less sensitive HEMs. Nanosize Cobalt ferrite (CoF) has been successfully synthesized using the co-precipitation method. Synthesis of less sensitive HEM 3-nitro-2,4-dihydro-3H-1,2,4-triazol-5-one(NTO) and its size reduction using solvent-antisolvent method is successfully achieved. Effect of 5 % by weight CoF on the thermolysis of NTO and NTO with reduced size (r-NTO) has been studied using the simultaneous thermal analysis. Three isoconversional methods namely Flynn Ozawa Wall, Kissinger-Akahira-Sunose (KAS), and Starink are employed to evaluate the kinetic parameter of NTO, and r-NTO in the presence of CoF additive. It was found that both the addition of CoF as well as reducing size of NTO can decrease the thermal decomposition temperature of NTO, the later decreasing the thermal decomposition temperature to a good extent compared to former. However, the kinetic study using isoconversional methods suggested that in the presence of CoF additive, the activation energy of both NTO as well as n-NTO is increased.

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