Rietveld refined structure, ferroelectric, magnetic and magnetoelectric response of Gd- substituted Ni-Cu-Zn ferrite and Ca, Zr co-doped BaTiO3 multiferroic composites

Das, Bablu Chandra; Hossain, A. K. M. Akther

doi:10.1016/j.jallcom.2021.159068

Cited by 24 publications

(8 citation statements)

References 111 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meanwhile, the multiferroics in the form of FE-FM composites (multi-phase structures) exhibit a stronger ME coupling effect and higher Curie temperature [18][19][20]. Therefore, they are prioritized for research and applications [21][22][23][24]. To produce multiferroic with a high application potential, no diffusion or chemical reaction occurs between the component phases in composites; and the values of magnetostriction and piezoelectric coefficients, dielectric permittivity, and resistivity should also be high [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Electrical, magnetic and microwave absorption properties of multiferroic NiFe₂O₄-BaTiO₃ nanocomposites

Lam

Nguyen

Dũng

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

Multiferroic nanocomposites of xNiFe2O4/(1-x)BaTiO3 (x = 0, 0.1, 0.2, 0.3, and 0.4) (denoted as NFO-BTO) with the particle size about of 70 nm were prepared by the high energy mechanical milling combined with the thermal annealing methods. The X-ray diffraction patterns show a presence of NiFe2O4 (NFO) and BaTiO3 (BTO) phases. The values of the characteristic parameters of nanocomposites such as the coercive field (E c), the residual polarization (P r), the remanent magnetization (M r), the saturation magnetization (M s), and the coercive force (H c) increase gradually with an increase in NFO concentration. For an applied electric field below 10 kV/cm, the values P r and E c are found to be 0.004-0.038 µC/cm2 and 0.7-2.0 kV/cm, corresponding x = 0.1-0.4, respectively. Changes in electrical and magnetic properties of composites depend heavily on the NFO content, which will be studied specifically. Additionally, the ability to absorb microwave at room temperature of a representative sample with x = 0.3 mixed in acrylic paint (denoted as NFO-BTO-AP) in a frequency range of f = 12-18 GHz has also been investigated. It shows a large negative reflection loss (RL) with RL = -39.8 dB occurring at around 16.8 GHz corresponding to the absorptivity of over 99.9% for an absorbing layer with thickness of 5.5 mm. This suggests that NFO-BTO nanocomposites could be considered as a potential material in the field of absorbing and shielding electromagnetic waves.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrical, magnetic and microwave absorption properties of multiferroic NiFe₂O₄-BaTiO₃ nanocomposites

Lam

Nguyen

Dũng

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…The development of wider P-E loops revealed substantial leakage current, which is anticipated due to the existence of conducting ferrite phase [ 48 ]. The excellent ferroelectric characteristics of untreated ferrite specimens can be related to the restricted mobility of ferroelectric phase domains [ 49 ]. Overall analysis validated that plasma treatment significantly reduced the ferroelectric properties of ferrite specimens.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Magnetic and Dielectric Properties of Ni0.25Cu0.25Zn0.50Fe2O4 Magnetic Nanoparticles through Non-Thermal Microwave Plasma Treatment for High-Frequency and Energy Storage Applications

et al. 2022

View full text Add to dashboard Cite

Spinel ferrites are widely investigated for their widespread applications in high-frequency and energy storage devices. This work focuses on enhancing the magnetic and dielectric properties of Ni0.25Cu0.25Zn0.50 ferrite series through non-thermal microwave plasma exposure under low-pressure conditions. A series of Ni0.25Cu0.25Zn0.50 ferrites was produced using a facile sol–gel auto-ignition approach. The post-synthesis plasma treatment was given in a low-pressure chamber by sustaining oxygen plasma with a microwave source. The structural formation of control and plasma-modified ferrites was investigated through X-ray diffraction analysis, which confirmed the formation of the fcc cubical structure of all samples. The plasma treatment did not affect crystallize size but significantly altered the surface porosity. The surface porosity increased after plasma treatment and average crystallite size was measured as about ~49.13 nm. Morphological studies confirmed changes in surface morphology and reduction in particle size on plasma exposure. The saturation magnetization of plasma-exposed ferrites was roughly 65% higher than the control. The saturation magnetization, remnant magnetization, and coercivity of plasma-exposed ferrites were calculated as 74.46 emu/g, 26.35 emu/g, and 1040 Oe, respectively. Dielectric characteristics revealed a better response of plasma-exposed ferrites to electromagnetic waves than control. These findings suggest that the plasma-exposed ferrites are good candidates for constructing high-frequency devices.

show abstract

“…45 The dominant response of the magnetoelectric coupling coefficient in Bi 0.95 Er 0.05 Fe 0.98 Zr 0.02 O 3 is due to the uniform distribution of grain size and stiffness of ferroelectric and ferromagnetic phases producing significant piezoelectric coefficient and/or magnetostrictive effect. 46,47 As the concentration of Er and Zr increases further in BiFeO 3 , the magnetoelectric coupling decreases. The reduction of magnetoelectric coupling is due to the demagnetization effect of Zr 4+ ions and the formation of additional phases, which reduces an intrinsic strain between ferroelectric and ferromagnetic phases.…”

Section: Magnetoelectric Effectmentioning

confidence: 99%

Oxygen octahedra distortion‐induced multiferroic properties of Er and Zr co‐doped BiFeO₃ nanoparticles

Divyalakshmi

Banu

Rajesh

2022

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

The present work unveiled the distortion of oxygen octahedra influencing magnetic and magnetoelectric properties of novel Bi 1−x Er x Fe 1−y Zr y O 3 (x = 0, .05, .1, y = .02, .05) polycrystalline nanoparticles by sol-gel route. X-ray diffraction patterns analysis reveals that pristine BiFeO 3 and doped BiFeO 3 are crystalized in the rhombohedral structure (R3c). The Fe-O-Fe bond angle of Bi 1−x Er x Fe 1−y Zr y O 3 (x = 0, .05, .1, y = .02, .05) varies between 141 • and 159.62 • as the concentration of Er (via Bi site) and Zr (via Fe site) ions increases in BiFeO 3 . As a result, the tilt angle of oxygen octahedra and the canting angle of spiral spin arrangement increase. Hence, the maximum magnetization varies between .03144 and .37558 emu/g in Er and Zr co-doped BiFeO 3 system. The number of electrons per unit cell of Bi 1−x Er x Fe 1−y Zr y O 3 (x = 0, .05, .1, y = .02, .05) lies between 733.38 and 831, respectively. Further, the number of coherently diffracting domains increases from 3.07 to 5.21, and then it decreases when Er and Zr are increased in BiFeO 3 . Consequently, the magnetoelectric coupling coefficient varies between .0265 and .2511 mV/cm Oe, respectively. Particularly, Bi 0.95 Er 0.05 Fe 0.98 Zr 0.02 O 3 shows enhanced magnetic and magnetoelectric behaviors compared to other samples.

show abstract

Rietveld refined structure, ferroelectric, magnetic and magnetoelectric response of Gd- substituted Ni-Cu-Zn ferrite and Ca, Zr co-doped BaTiO3 multiferroic composites

Cited by 24 publications

References 111 publications

Electrical, magnetic and microwave absorption properties of multiferroic NiFe₂O₄-BaTiO₃ nanocomposites

Electrical, magnetic and microwave absorption properties of multiferroic NiFe₂O₄-BaTiO₃ nanocomposites

Enhancement of Magnetic and Dielectric Properties of Ni0.25Cu0.25Zn0.50Fe2O4 Magnetic Nanoparticles through Non-Thermal Microwave Plasma Treatment for High-Frequency and Energy Storage Applications

Oxygen octahedra distortion‐induced multiferroic properties of Er and Zr co‐doped BiFeO₃ nanoparticles

Contact Info

Product

Resources

About

Rietveld refined structure, ferroelectric, magnetic and magnetoelectric response of Gd- substituted Ni-Cu-Zn ferrite and Ca, Zr co-doped BaTiO3 multiferroic composites

Cited by 24 publications

References 111 publications

Electrical, magnetic and microwave absorption properties of multiferroic NiFe2O4-BaTiO3 nanocomposites

Electrical, magnetic and microwave absorption properties of multiferroic NiFe2O4-BaTiO3 nanocomposites

Enhancement of Magnetic and Dielectric Properties of Ni0.25Cu0.25Zn0.50Fe2O4 Magnetic Nanoparticles through Non-Thermal Microwave Plasma Treatment for High-Frequency and Energy Storage Applications

Oxygen octahedra distortion‐induced multiferroic properties of Er and Zr co‐doped BiFeO3 nanoparticles

Contact Info

Product

Resources

About

Electrical, magnetic and microwave absorption properties of multiferroic NiFe₂O₄-BaTiO₃ nanocomposites

Electrical, magnetic and microwave absorption properties of multiferroic NiFe₂O₄-BaTiO₃ nanocomposites

Oxygen octahedra distortion‐induced multiferroic properties of Er and Zr co‐doped BiFeO₃ nanoparticles