Magnetic and Mössbauer Study of Lanthanum Doped Nanosized Cobalt Ferrite Assembly

Gupta, Meenal; Das, Anirban; Dutta, Saurav K.; Mohapatra, Satyabrata; Datta, Anindya

doi:10.2139/ssrn.4085275

Cited by 1 publication

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“…Recently, the synthesis of cobalt ferrite nanoparticles with other elements doping has been carried out [20][21][22][23]. The addition of small amounts of external ions in the composition of cobalt ferrite nanoparticles can dramatically change their structural and magnetic properties [1].…”

Section: Introductionmentioning

confidence: 99%

Physical Properties Modification of Co-Precipitated CoLa0.1Fe1.9O4 Nanoparticle with Different Fe3+ Raw Material

Prasetya

Utari

Iriani

et al. 2023

KEM

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Lanthanum-substituted cobalt ferrite nanoparticles (CoLa0.1Fe1.9O4) with different Fe3+ cation sources i.e., using standard chemical lab (sample A) and a Bengawan Solo River fine sediment (sample B), were synthesized using the co-precipitation method. FTIR analysis showed that the absorption of the two nanoparticles sample appeared at a peak of v1=586.39 cm-1, whereas the v2 appear at 461.97/cm and 435.93/cm respectively. It is suggested that the La3+ cation has succeeded in replacing the original structure of the cobalt ferrite. X-ray diffraction analysis showed that nanoparticles produce using a standard chemical lab (sample A) have smaller crystallite sizes, D=18.16 nm than the natural source of fine sediment (sample B), D=24.56 nm, respectively. Furthermore, the VSM results showed that the magnitude coercive field of Hc = 3100 Oe and Hc = 100 Oe for samples A and B, respectively. Meanwhile, the obtained saturated magnetization Ms of 15.55 emu/g for sample A and the Ms is 58.40 emu/g for sample B. This result informs that if a hard magnetic material is desired then the use of lab raw materials is more promising, while if soft magnetic is desired then a natural source of fine sediment is more appropriate to use.

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