Multiferroic ferrite/perovskite oxide core/shell nanostructures

Liu, Rongzheng; Zhao, Yuzhen; Huang, Rongxia; Zhao, Yongjie; Zhang, Heping

doi:10.1039/c0jm02602f

Cited by 74 publications

(45 citation statements)

References 32 publications

(27 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tatarenko et al [131] reported the converse ME effect over the [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] GHz range in bilayers of single crystal ZnY and polycrystalline PZT or single crystal PMN-PT. The resonator was tuned by 120 MHz with E = 12 kV/cm, and corresponding ME coupling strength A was about 10 MHz cm/kOe.…”

Section: Resonatorsmentioning

confidence: 99%

“…A modified precipitation method involving a controlled annealing, quenching, and aging cycle [16] has been employed to obtain good dispersion of ferrite (NiFe 1.9 Mn 0.1 O 4 ) particles in the matrix (PZT) phase. Core/shell (ferrite/piezoceramic) structured composites have been synthesized to avoid the contact of the conductive ferrite particles during sintering [17]. Unlike the other cases, Islam et al [18] reported a PZT core/NiFe 2 O 4 shell ME composite (Figure 3c).…”

Section: Bulk Me Compositesmentioning

confidence: 99%

“…Kalyan et al [53] synthesized CoFe2O4/BaTiO3 core/shell nanoparticles ( Figure 6a) using a combination of solution processing and high temperature calcination. Rongzheng et al [17] demonstrated the formation of ferrite/perovskite oxide core/shell nanostructures in several multiferroic systems such as Fe3O4/PbTiO3, γ-Fe2O3/PbTiO3, γ-Fe2O3/Pb(Zr,Ti)O3, CoFe2O4/BaTiO3, CoFe2O4/PbTiO3 and CoFe2O4/Pb(Zr,Ti)O3 using a combined hydrothermal and annealing process. For synthesizing ordered arrays of NiFe2O4/PZT core/shell nanowires (Figure 6b), Ming et al [54] developed a method involving the combination of a modified sol-gel process, electrochemical deposition, and subsequent oxidization in anodized nanoporous alumina membranes.…”

Section: Me Composites With Novel Structuresmentioning

confidence: 99%

See 2 more Smart Citations

Status and Perspectives of Multiferroic Magnetoelectric Composite Materials and Applications

et al. 2016

View full text Add to dashboard Cite

Multiferroic magnetoelectric (ME) composites are attractive materials for various electrically and magnetically cross-coupled devices. Many studies have been conducted on fundamental understanding, fabrication processes, and applications of ME composite material systems in the last four decades which has brought the technology closer to realization in practical devices. In this article, we present a review of ME composite materials and some notable potential applications based upon their properties. A brief summary is presented on the parameters that influence the performance of ME composites, their coupling structures, fabrications processes, characterization techniques, and perspectives on direct (magnetic to electric) and converse (electric to magnetic) ME devices. Overall, the research on ME composite systems has brought us closer to their deployment.

show abstract

Section: Resonatorsmentioning

confidence: 99%

Section: Bulk Me Compositesmentioning

confidence: 99%

Section: Me Composites With Novel Structuresmentioning

confidence: 99%

See 1 more Smart Citation

Status and Perspectives of Multiferroic Magnetoelectric Composite Materials and Applications

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Nanostructures of core-shell particles, pillars in a host matrix, coaxial tubes and wires have been studied in recent years. [26][27][28][29][30][31][32][33][34][35] The strength of ME coupling in these systems was studied by several techniques including piezo force microscopy and magnetic force microscopy. [35][36][37] Theories predict strong ME coupling in these systems.…”

Section: -6mentioning

confidence: 99%

High frequency magneto-dielectric effects in self-assembled ferrite-ferroelectric core-shell nanoparticles

et al. 2014

View full text Add to dashboard Cite

Magneto-dielectric effects in self-assembled core-shell nanoparticles of nickel ferrite (NFO) and barium titanate (BTO) have been investigated in the millimeter wave frequencies. The core-shell nano-composites were synthesized by coating 100 nm nickel ferrite and 50 nm barium titanate nanoparticles with complementary coupling groups and allowing them to self-assemble in the presence of a catalyst forming heterogeneous nanocomposites. Magneto-electric (ME) characterization of as-assembled particles has been carried out by measurements of the relative permittivity ɛr as a function of frequency f under an applied static magnetic field H over 16–24 GHz. Measurements show an H-induced decrease in ɛr of 1 to 1.5%. But a giant magneto-dielectric effect with an H-induced change in permittivity as high as 28% is measured under dielectric resonance in the samples. A strong ME coupling was also evident from H-tuning of dielectric resonance in the composites. A theory for the high frequency magneto-dielectric effect has been developed and consists of the following steps. First the Bruggeman model is used to estimate the effective dielectric constant for the shell consisting of the BTO particles and voids considered as spherical air-pores. Then the permittivity for the core and shell is estimated taking into consideration the sample porosity. Finally the H-dependence of the permittivity due to ME interactions is calculated from the free energy considerations. Estimated ɛr vs. H and dielectric resonance frequency vs. H characteristics are in general agreement with the data.

show abstract

“…For this reason, an increase in the area of the interface through which magnetostriction or electrostriction propagates to other phases is considered to be effective for increasing the ME effect. 9,10,12,13 Moreover, the formation of an anisotropic interface between magnetostrictive and electrostrictive materials is essential for increasing the ME effect.…”

mentioning

confidence: 99%

Linear magnetic field dependence of the magnetodielectric effect in eutectic BaTiO3-CoFe2O4 multiferroic material fabricated by containerless processing

Fukushima

Ara

Nojima

et al. 2018

Applied Physics Letters

View full text Add to dashboard Cite

To maximize the formation of an anisotropic interface between the magnetostrictive phase and the electrostrictive phase, a eutectic BaTiO3-CoFe2O4 multiferroic material is fabricated by containerless processing. The composites in this process had a fine eutectic structure, especially at a eutectic composition of BaTiO3:CoFe2O4 = 62:38. TEM observations revealed that the (1 0 0) plane of tetragonal BaTiO3 and the (1 0 0) plane of CoFe2O4 were oriented in parallel. In addition to the largest magnetodielectric effect in the eutectic-composition samples, we confirmed the permittivity is controlled linearly by applying a high magnetic field through forced magnetostriction. So far, the peak of the magnetodielectric effect around 0.25 T has been only found in the sintered CoFe2O4 polycrystalline sample. Thus, the containerless processing provides us a route to produce an ideal microstructure without accompanying 90° domain wall process and rotational magnetization process, which enhances the magnetodielectric effect.

show abstract

Multiferroic ferrite/perovskite oxide core/shell nanostructures

Cited by 74 publications

References 32 publications

Status and Perspectives of Multiferroic Magnetoelectric Composite Materials and Applications

Status and Perspectives of Multiferroic Magnetoelectric Composite Materials and Applications

High frequency magneto-dielectric effects in self-assembled ferrite-ferroelectric core-shell nanoparticles

Linear magnetic field dependence of the magnetodielectric effect in eutectic BaTiO3-CoFe2O4 multiferroic material fabricated by containerless processing

Contact Info

Product

Resources

About