Ultrasound-assisted synthesis and magnetic investigations of Ni0.4Cu0.4Zn0.2GaxGdxFe2-2xO4 (0.00 ≤ x ≤ 0.04) nanosized spinel ferrites

Slimani, Y.; Almessiere, M.A.; Korkmaz, A. Demir; Baykal, A.; Manikandan, A.; Güngüneş, H.; Toprak, Muhammet S.

doi:10.1007/s00339-022-05727-2

Cited by 4 publications

(1 citation statement)

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“…The ferrimagnetic ferrites can be divided into three families based on their resistance to being demagnetized (magnetic coercivity): soft [1], intermediate [2], and hard [3]. They can be classified into four categories based on their crystal structures: spinel ferrite [4], hexaferrite [3], garnet ferrite [5], and orthoferrite [6,7].…”

Section: Introductionmentioning

confidence: 99%

Exchange-spring behavior in Ni_0.3Cu_0.2Zn_0.5Fe₂O₄/PbFe₁₂O₁₉ nanocomposite

Khodayari,

Gholizadeh

2024

Phys. Scr.

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The structural and magnetic properties of the (1-x)Ni0.3Cu0.2Zn0.5Fe2O4/(x)PbFe12O19 nanocomposites were investigated, where x is the weight percentage of PbFe12O19 (hard phase) ranging from 0 to 100%. The magnetic measurement curves show a magnetic phase transition from soft to hard ferrimagnetic with an increasing weight percentage of the hard PbFe12O19 phase. For weight percentages of 30%, 45%, and 60% of PbFe12O19, the Mr/Ms ratio is more than 0.5 and they show a normal single-phase magnetic behaviour, indicating the formation of a strong exchange coupling in these samples. Compared to the single-phase Ni0.3Cu0.2Zn0.5Fe2O4 (soft phase), the saturation magnetization of the composites decreases significantly from 34.45 to 16.1 emu/g with increasing PbFe12O19 content, while the coercivity increases from 62 to 861 Oe. Although increasing the PbFe12O19 content reduces the saturation magnetization and increases the coercivity of the soft magnetic phase, this may provide a significant way to tune the magnetic properties with desired coercivity and saturation magnetization.

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