Structural, Electrical, and Dielectric Properties of Multiferroic–Spinel Ferrite Composites

Nazir, Muhammad Aamir; Ul-Islam, Misbah; Ali, Irshad; Hassan, Ali; Ahmad, Bashir; Ramay, Shahid M.; Raza, Nadeem; Ehsan, Muhammad Fahad; Ashiq, Muhammad Naeem

doi:10.1007/s11664-015-4286-3

Cited by 16 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, dispersion is observed in all the samples at 2.5 GHz and higher frequencies, thus giving rise to the resonance phenomenon. The resonance phenomenon is observed at 2.5 GHz when the shifting frequency between Fe 2+ and Fe 3+ becomes equal to the applied AC frequency, resulting in the maximum power absorption responsible for the resonance peak [48,49].…”

Section: Dielectric Propertiesmentioning

confidence: 99%

Structural, Magnetic, and Dielectric Properties of Sn-Doped BiFeO3: Experiment and DFT Analysis

Farid

Murtaza

Flemban

et al. 2021

J Supercond Nov Magn

View full text Add to dashboard Cite

The structural, magnetic, dielectric, and surface morphology of BiSn x Fe 1-x O 3 (x = 0.0 to 1.0) was analyzed experimentally. The samples were synthesized by a simple chemical micro-emulsion method. The X-ray diffraction (XRD) analysis reveals structural distortion at A site and B site of BFO due to Sn doping in rhombohedral phase. The EDX data certify Sn is well incorporated in BiFeO 3 . The effect of Sn doping on crystal size and grain size has also been addressed. The FTIR analysis elaborates absorption at 555 cm −1 which is due to stretching and bending vibrations of O-Fe-O bonds. The magnetic properties are illustrated by vibrating sample magnetometer (VSM). The magnetic moments and exchange mechanism described theoretically by DFT analysis which support the experimental results. The dielectric behavior of studied materials has been evaluated by dielectric constant (ɛʹ), tangent loss (tanδ), real and imaginary part of impedance, and Cole-Cole plots in 1-3 GHz. The spin-orientated magnetism and dielectric response increase their potential for microwave absorber and sensor.Keywords Room temperature ferromagnetism • Micro-emulsion method • Vibrating sample magnetometer * Q. Mahmood

show abstract

Section: Dielectric Propertiesmentioning

confidence: 99%

Structural, Magnetic, and Dielectric Properties of Sn-Doped BiFeO3: Experiment and DFT Analysis

Farid

Murtaza

Flemban

et al. 2021

J Supercond Nov Magn

View full text Add to dashboard Cite

show abstract

“…Therefore, multiferroic-ferrite composites can be synthesized as a result of high Curie temperature and suitable ferromagnetic-ferroelectric coupling. As a result of the work done, it has been reported that the elastic coupling between multiferrides and spinel ferrites may be formed by epitaxial or layered alignment [9,10].…”

Section: Introductionmentioning

confidence: 99%

Electronic properties of spin excitation in multiferroics with a spinel structure: first principles calculation

et al. 2019

View full text Add to dashboard Cite

In the present work, the structural, electronic and mechanical properties of LiVCuO 4 and LiCu 2 O 4 spinel type multiferroics have been investigated by means of first principles calculations. The spin polarized generalized gradient approximation has been used for modeling exchange-correlation effects. The structural optimization of these multiferroics compounds has been performed by using VASP-code, and the lattice parameters and magnetic moments have been calculated. From our calculation, it has been determined that the LiVCuO 4 compound is a narrow band gap semiconductor, while the LiCu 2 O 4 compound is metallic in nature. Considering the spin states from the electronic band structure and density of the state (DOS) of the LiVCuO 4 compound, it has been identified that E g ¼1.87 eV for spin up and E g ¼0.37 eV for spin down. The second-order elastic constants have been calculated, and the other related quantities have also been estimated in the present work.

show abstract

“…Ferrites are widely used as magnetic materials, which are a key element of most modern radio engineering, electronic and computing devices, including lithium ferrites. Lithium ferrites, in which Fe 3+ ions are replaced by zinc ions, are excellent materials for use in microwave, electronics and other fields of science and as cathodes of lithium batteries [1][2][3]. There are several ways to obtain ferrite materials, the most common of which is the method of ceramic technology, based on the solid-phase interaction of compacted powders under high-temperature heating [4,5].…”

Section: Introductionmentioning

confidence: 99%

Solid-Phase Formation of Li-Zn Ferrite under High-Energy Impact

Nikolaev

Lysenko

Суржиков

2019

MSF

View full text Add to dashboard Cite

The effect of complex high-energy action, including mechanical milling of Li2CO3-Fe2O3-ZnO initial reagents mixture and its consistent heating by the pulsed electron beam on solid-phase synthesis was studied by X-ray powder diffraction and thermal analyses. The initial mixture Li2CO3-Fe2O3-ZnO corresponds to the ferrite with stoichiometric formula: Li0.5(1–x)ZnxFe2.5–0.5xО4, where х = 0.2. The same studies were carried out with thermal heating in a laboratory furnace for detection the effect of radiation on the formation of phase composition lithium-zinc ferrite. Initial mixture was milled in AGO-2S planetary ball mill with a milling speed of 2220 rpm for 60 min. Radiation-thermal synthesis of the milled mixture was carried out by the pulsed electron accelerator (ILU-6) at 600°C and 750°C. The maximum time of the isothermal stage was 60 minutes. According to the X-ray powder diffraction and thermogravimetric analysis, it was found that the complex high-energy action leads to decrease a temperature and time of obtaining lithium-zinc ferrite homogeneous in phase composition. The proposed high-energy regimes allow to synthesized lithium-zinc ferrites at 600 °C for 60 minutes, which is much lower compared to conventional ceramic technology.

show abstract

Structural, Electrical, and Dielectric Properties of Multiferroic–Spinel Ferrite Composites

Cited by 16 publications

References 20 publications

Structural, Magnetic, and Dielectric Properties of Sn-Doped BiFeO3: Experiment and DFT Analysis

Structural, Magnetic, and Dielectric Properties of Sn-Doped BiFeO3: Experiment and DFT Analysis

Electronic properties of spin excitation in multiferroics with a spinel structure: first principles calculation

Solid-Phase Formation of Li-Zn Ferrite under High-Energy Impact

Contact Info

Product

Resources

About