Magnetic and ferroelectric properties of PbFe1/2Nb1/2O3 synthesized by a solution precipitation method

Bochenek, Dariusz

doi:10.1016/j.jallcom.2010.05.153

Cited by 22 publications

(17 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pur pose of this work was to obt ain BiFeO 3 -PbFe 1/2 Nb 1/2 O 3 (BF-PFN) materials (ceramic solid solutions) with different BiFeO 3 (BF) content in relation to PbFe 1/2 Nb 1/2 O 3 (PFN) and to study the dielectric properties of the obtained samples. Both PFN [27][28][29][30][31] and BF [32][33][34] materials belong to the group of multiferroic materials. The paper presents the results of research of morphology of fracture, qualitative and quantitative analysis of chemical elements contained in the obtained samples.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and dielectric properties of BF–PFN ceramics with negative dielectric loss

Bartkowska

Bochenek

2018

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Multiferroics with negative value of dielectric constant are very promising materials because of their modern applicability. These materials can be used as materials for the construction of electromagnetic radiation shields. The subject of the research is multiferroic BiFeO 3-PbFe 1/2 Nb 1/2 O 3 (BF-PFN) ceramics. For all multiferroic materials the following studies are conducted: SEM, EDS and the temperature dependence of dielectric constant ε′(T). Above a certain temperature (different for different chemical compositions) the value of dielectric constant reaches negative values. Such the behavior of the dielectric constant may indicate that the polarization inside the material has a reverse direction to the external electric field. That is, the electric field inside the material counteracts the applied external electric field. The obtaining materials also show negative dielectric losses. The Axelrod model is used to explain the mechanism that causes negative dielectric loss.

show abstract

Section: Introductionmentioning

confidence: 99%

Microstructure and dielectric properties of BF–PFN ceramics with negative dielectric loss

Bartkowska

Bochenek

2018

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

show abstract

“…Low dielectric loss may be associated with the presence of more pyrochlore phase (as shown by XRD tests), which partially reduces the electrical conductivity from the intergranular areas, reducing values of dielectric loss. In comparison with the PFN ceramics obtained by FS method [23], the PFN-n ceramics have significantly lower dielectric loss.…”

Section: Dielectric Propertiesmentioning

confidence: 83%

“…For 1 kHz, the value of the dielectric permittivity maximum (at TC) is 9,590 and at RT ε=4,100. Compared with the PFN ceramics obtained by FS[23], the PFN-c ceramics have a lesser degree of blurring the phase transition and higher values of εmax. In the work[23] the value of εmax is 5,110.…”

mentioning

confidence: 79%

See 1 more Smart Citation

Dielectric properties of the PFN ceramics obtained different chemical-wet technology and sintering by hot pressing method

Bochenek

Niemiec

2018

MATEC Web Conf.

View full text Add to dashboard Cite

The paper shows three kinds of chemical-wet technology synthesis of the ferroelectric-ferrimagnetic PbFe1/2Nb1/2O3 materials and technology process of the ceramic samples sintered by hot pressing method. In the technological process of the PFN powders were used follows precursors: lead acetate trihydrate and niobium ethoxide while an iron-related components were changed: iron nitrate obtained by first sol-gel technology (PFN-n), iron oxalate obtained by second sol-gel technology (PFN-ox) and iron citrate obtained by third technology (PFN-c). XRD, SEM tests and temperature measurements of dielectric properties of the ceramic samples were carried out. The SEM microstructure tests of the PFN ceramic samples confirm the properly conducted technological processes. The best dielectric properties of the PFN ceramic samples were obtained for third technology using iron citrate precursor. But, this method of the PFN ceramic powder requires minimization of a pyrochlore phase and reduction porosity of the ceramic samples.

show abstract

“…Multiferroics belong to the group of materials which, simultaneously, have at least two spontaneously-ordered subsystems among the following states: ferromagnetic, ferroelectric, ferroelastic, and ferrotoroidic [1][2][3][4][5]. Most frequently, multiferroic materials are designed in the form of simple compounds, solid solutions, and composites [6][7][8][9][10][11][12][13][14]. The application capabilities of multiferroic materials in modern microelectronics and micromechatronics depend primarily on the degree of coupling between specific subsystems (magnetic, electric, or elastic) [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of the Ferroelectric-Ferromagnetic PLZT-Ferrite Composites

et al. 2018

View full text Add to dashboard Cite

The paper presents the technology of ferroelectric-ferromagnetic ceramic composites obtained from PLZT powder (the chemical formula Pb 0.98 La 0.02 (Zr 0.90 Ti 0.10) 0.995 O 3) and ferrite powder (Ni 0.64 Zn 0.36 Fe 2 O 4), as well as the results of X-ray powder-diffraction data (XRD) measurement, microstructure, dielectric, ferroelectric, and magnetic properties of the composite samples. The ferroelectric-ferromagnetic composite (P-F) was obtained by mixing and the synthesis of 90% of PLZT and 10% of ferrite powders. The XRD test of the P-F composite shows a two-phase structure derived from the PLZT component (strong peaks) and the ferrite component (weak peaks). The symmetry of PLZT was identified as a rhombohedral ferroelectric phase, while the ferrite was identified as a spinel structure. Scanning electron microscope (SEM) microstructure analysis of the P-F ceramic composites showed that fine grains of the PLZT component surrounded large ferrite grains. At room temperature P-F composites exhibit both ferroelectric and ferromagnetic properties. The P-F composite samples have lower values of the maximum dielectric permittivity at the Curie temperature and a higher dielectric loss compared to the PLZT ceramics, however, the exhibit overall good multiferroic properties.

show abstract

Magnetic and ferroelectric properties of PbFe1/2Nb1/2O3 synthesized by a solution precipitation method

Cited by 22 publications

References 18 publications

Microstructure and dielectric properties of BF–PFN ceramics with negative dielectric loss

Microstructure and dielectric properties of BF–PFN ceramics with negative dielectric loss

Dielectric properties of the PFN ceramics obtained different chemical-wet technology and sintering by hot pressing method

Microstructure and Properties of the Ferroelectric-Ferromagnetic PLZT-Ferrite Composites

Contact Info

Product

Resources

About