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1 article(s) from Ghotbi Varzaneh, Ali

The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles

Hajar Jalili,
Bagher Aslibeiki,
Ali Ghotbi Varzaneh and
Volodymyr A. Chernenko

Beilstein J. Nanotechnol. 2019, 10, 1348–1359, doi:10.3762/bjnano.10.133

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Figure 1: (a) XRD patterns of the Co_xFe₃₋_xO₄ (0 ≤ x ≤1) nanoparticles. (b) Shift of the (440) reflection.

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Figure 2: Rietveld-refined XRD pattern of the x = 0.2 sample.

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Figure 3: FE-SEM images of Co_xFe₃₋_xO₄ nanoparticles: (a) x = 0.0; (b) x = 0.2; (c) x = 0.4; (d) x = 0.6; (e) x...

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Figure 4: EDX spectra of Co_xFe₃₋_xO₄ nanoparticles: (a) x = 0.2; (b) x = 0.6; and (c) x = 1.0. (d) Comparison ...

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Figure 5: FTIR spectra of Co_xFe₃₋_xO₄ nanoparticles with x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0. The inset is the...

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Figure 6: Polyhedral model showing the cubic spinel crystal structure of CoFe₂O₄. Green and blue shaded areas...

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Figure 7: TGA curve of the CoFe₂O₄ sample.

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Figure 8: Room-temperature magnetization curves of the Co_xFe₃₋_xO₄ samples measured. The inset shows the magne...

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Figure 9: The M–1/H² dependence of the Co_xFe₃₋_xO₄ samples at high field strengths. Experimental data are mark...

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Figure 10: Effective anisotropy constant (K_eff) and coercivity (H_c) of the Co_xFe₃₋_xO₄ samples.

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Figure 11: IRM and DCD magnetization curves of (a) all Co_xFe₃₋_xO₄ samples and separately for (b) x = 0.2, (c) x...

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Figure 12: δm as a function of the magnetic field strength measured at room temperature. The inset shows the H...

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Figure 13: Temperature rise in Co_xFe₃₋_xO₄ suspensions in an ac magnetic field (27 Oe, 92 kHz) as a function of...

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Full Research Paper

Published 03 Jul 2019

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