Effect of bismuth substitution on magnetic properties of CoFe2O3 nanoparticles: Study of synthesize using coprecipitation method

Saputro, Didik Eko; Utari, Utari; Purnama, Budi

doi:10.20961/jphystheor-appl.v3i1.31764

Cited by 2 publications

(3 citation statements)

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“…For ferrite-based nanoparticles, the synthesis route has been introduced since a decade ago [6][7][8][9]. However, to date, it is still a fascination in materials research as fabrication technology advances in realizing theoretical results [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…The tunable magnetic properties via the cations redistribution in tetrahedral and octahedral sites are the advantages of this class. Moreover, the substitution of other metal ions into the cobalt ferrite structure also changes these properties [11,12,20], as well as variations in the synthesis [21,22], and annealing temperature [19,23]. These modifications are carried out to attain specific magnetic properties according to the desired applications.…”

Section: Introductionmentioning

confidence: 99%

“…One popular method for the synthesis of cobalt ferrite nanoparticles is co-precipitation [19,[37][38][39]. This method is widely used in research because it is cheap, simple, non-toxic, industrial-scale, and saves time [12]. Generally, the synthesis temperature of co-precipitation is 95 °C [38].…”

Section: Introductionmentioning

confidence: 99%

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Cation trivalent tune of crystalline structure and magnetic properties in coprecipitated cobalt ferrite nanoparticles

Prasetya

Setiyani²,

Utari³

et al. 2023

Mater. Res. Express

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CoFe2O4, CoBi0.1Fe1.9O4, CoLa0.1Fe1.9O4, and CoAl0.1Fe1.9O4 nanoparticles were successfully synthesized by the coprecipitation method. After annealing at 700C for 5 h, the X-Ray Diffractometer results confirm that a single phase of cobalt ferrite-based nanoparticles is obtained, which is suitable for ICDD 22-1086. The addition of Bi3+, La3+ and Al3+ ions to the cobalt ferrite nanoparticles modified the crystallite size and lattice constant. Trivalent metal cation substitution tunes the crystallite size which has also been confirmed by measuring the grains with Scanning Electron Microscope images. In the Far Transform Infra-Red curve, the addition of metal ions (Bi3+, La3+, and Al3+) to cobalt ferrite nanoparticles resulted in absorption peaks at the tetrahedral and octahedral sites without any additional absorption peaks. The VSM results showed that saturation magnetization decreased drastically in the presence of trivalent non-magnetic cations, which confirms the replacement of Fe3+ by trivalent non-magnetic cations. The kOe order of the coercive field was obtained in this experiment. The largest coercive field of the cobalt ferrite nanoparticles was obtained with the addition of La3+ ions, i.e., 3.67 kOe suggest supporting both Jahn-Teller effect and strain-induced magnetism.

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