Structural, magnetic properties and hyperthermia efficiency of MF/CuAl2O4 multiferroic nanocomposite

Roumaih, Kh.; Hussein, Shaban I.; Ali, I. M.

doi:10.1016/j.cjph.2022.03.009

Cited by 3 publications

(3 citation statements)

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“…Distilled water was used for the solubility of all solutions in the preparation and the practical part. The chemical preparation is explained in detail in previous works [33,34,37]. The final powder of ZF/RE was groundedto perform XRD, SEM, TEM, ESR, VSM, and SAR experiments.…”

Section: Methodsmentioning

confidence: 99%

“…XRD, SEM, and HR-TEM were used to describe the nanocomposites and their magnetic properties by VSM and ESR, and hyperthermia efficiency parameters (SAR) were measured and examined. Additionally, this study is part of a research study on the relationship between two compounds, whether these two compounds are similar in their crystal structures, as in the previous work [1,37], or different, as is the case in this study, that is studying the mutual force between two compounds.…”

Section: Introductionmentioning

confidence: 94%

“…The lattice parameters of ZF are not far from what was posted before [17,18,43], but it is changed in the presence of rare earth oxides. In other words, there is a mutual force between the phases (ZF and Yb or Sm) in the nanocomposites ZF/RE that affects the lattice parameters of ZF and the physical properties of the nanocomposites, as described in the literature [1,37]. Also, ZF's crystallite size varies depending on the associated oxide.…”

Section: Structural Propertiesmentioning

confidence: 99%

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Impact of rare earth oxide on ZnFe₂O₄: structural, magnetic properties, and hyperthermia efficiency

Roumaih,

Ali,

Hussein

2023

Phys. Scr.

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ZnFe2O4/Yb2O3 (ZF/Yb) and ZnFe2O4/Sm2O3 (ZF/Sm) were prepared by the sol-gel method. XRD pattern of sample ZF show a clear cubic spinel structure (space group fd-3m). The XRD confirmed the presence of ZF along with Yb in the ZF/Yb. In the case of ZF/Sm, the raw materials interact with each other and produce ZF alongside ZnO and SmFeO3. The SEM and TEM indicate that all compounds were at the nanoscale. The particle size for ZF is 19.6 nm, and those for ZF/Yb and ZF/SM are 29.5 nm and 30.7 nm, respectively. A vibrating sample magnetometer (VSM) confirmed the ferrimagnetic ordering of these samples. A distinct, potent, sweeping, and asymmetric line was observed in the X-band electron spin resonance (ESR) spectra of all samples. The VSM and ESR show that the internal interactions between ZF and rare earth oxides, as well as the particle size, play a role in the magnetic properties. The specific absorption rate (SAR) parameters showed that the temperature increased linearly with time, and in only 25 seconds, the temperature reached 45 °C for the ZF sample. 

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Section: Structural Propertiesmentioning

confidence: 99%

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Impact of rare earth oxide on ZnFe₂O₄: structural, magnetic properties, and hyperthermia efficiency

Roumaih,

Ali,

Hussein

2023

Phys. Scr.

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Structural, magnetic, and optical properties of ZnFe2O4/RO (RO = CdO, NiO, Ga2O3, SnO2, and TiO2) nanocomposites

et al. 2023

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The sol–gel method is used to prepare the nanocomposites ZF/RO (ZF = ZnFe2O4, RO = CdO, NiO, Ga2O3, SnO2, and TiO2). The XRD showed that the ZF/RO nanocomposite' crystal structure contained many phases, and the lattice properties and crystal size of the ZF were affected by the presence of the RO traces. All samples have surfaces that resemble nanoflakes that vary in size based on the SEM pictures; however, the ZF/Cd sample has a nanotube microstructure. ESR and VSM were measured at room temperature and showed ferrimagnetic behavior for all samples. The optical properties showed the band gaps for ZF, ZF/Cd, ZF/Ga, ZF/Ni, ZF/Sn, and ZF/Ti nanocomposites were 1.773, 1.789, 1.786, 1.763, 1.822, and 1.835 eV, respectively. The spectral PL intensity of ZF/Sn, ZF/Cd, and ZF/Ti nanocomposites is partially low compared to the spectrum for the ZF, and vice versa for ZF/Ni and ZF/Ga, which show an increase in the recombination for e−/h+. ZF/RO nanocomposites' practical sunlight consumption ability and recombination of photoinduced charge carriers account for their photocatalytic efficacy. This study is part of a research project investigating the relationship between two compounds with different structures and properties.

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Electrical and magnetic properties of MF/CuAl nanocomposites

Roumaih

2023

Zeitschrift Für Naturforschung A

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This study investigated the effects of CuAl2O4 (CuAl) on four types of spinel ferrites: CoFe2O4 (CoF), NiFe2O4 (NiF), MgFe2O4 (MgF), and ZnFe2O4 (ZnF) with regards to their electrical characteristics and microscopic magnetic behavior. According to the Seebeck coefficient (φ), the nanocomposites have a mixture of positive and negative charge carriers, except for CoF/CuAl, which has a positive charge carrier only. Depending on the temperature, the DC conductivity of all MF/CuAl nanocomposites has a conductor and semiconductor behavior. The dielectric properties were studied at different frequencies (100–10^8 Hz) and temperatures (300–673 K). The results demonstrated how temperature and frequency affect AC operating mechanisms. The high values of dielectric loss for all nanocomposites confirm their applicability in high-frequency microwave devices. The impedance study revealed that the equivalent circuit for all MF/CuAl nanocomposites is a mixture of R, L, and C. Temperature-magnetization graphs were obtained for all nanocomposites, indicating ferrimagnetic behavior except ZnF/CuAl. The magnetic transition temperature (T Cm), the Curie–Weiss constant (θ CW), and the effective magnetic moments (μ eff) for all nanocomposites were determined. The MF/CuAl samples were analyzed using ESR spectroscopy at room temperature. The spectra were distorted but remained distinct, potent, and sweeping. The g-factor values deviate from the free electron, which suggests that the Fe3+–O–Fe3+ superexchange interaction has changed. In addition, the interaction effect between MF and CuAl is discussed.

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Structural, magnetic properties and hyperthermia efficiency of MF/CuAl2O4 multiferroic nanocomposite

Cited by 3 publications

References 55 publications

Impact of rare earth oxide on ZnFe₂O₄: structural, magnetic properties, and hyperthermia efficiency

Impact of rare earth oxide on ZnFe₂O₄: structural, magnetic properties, and hyperthermia efficiency

Structural, magnetic, and optical properties of ZnFe2O4/RO (RO = CdO, NiO, Ga2O3, SnO2, and TiO2) nanocomposites

Electrical and magnetic properties of MF/CuAl nanocomposites

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Structural, magnetic properties and hyperthermia efficiency of MF/CuAl2O4 multiferroic nanocomposite

Cited by 3 publications

References 55 publications

Impact of rare earth oxide on ZnFe2O4: structural, magnetic properties, and hyperthermia efficiency

Impact of rare earth oxide on ZnFe2O4: structural, magnetic properties, and hyperthermia efficiency

Structural, magnetic, and optical properties of ZnFe2O4/RO (RO = CdO, NiO, Ga2O3, SnO2, and TiO2) nanocomposites

Electrical and magnetic properties of MF/CuAl nanocomposites

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Impact of rare earth oxide on ZnFe₂O₄: structural, magnetic properties, and hyperthermia efficiency

Impact of rare earth oxide on ZnFe₂O₄: structural, magnetic properties, and hyperthermia efficiency