scholarly journals Effect of Chemical Composition on Magnetic and Electrical Properties of Ferroelectromagnetic Ceramic Composites

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2488
Author(s):  
Dariusz Bochenek ◽  
Przemysław Niemiec ◽  
Artur Chrobak
Keyword(s):  
Magnetic Properties ◽  
Electrical Properties ◽  
Ferroelectric Properties ◽  
Ceramic Composites ◽  
Chemical Formula ◽  
Backscattered Electrons ◽  
Diffraction Patterns ◽  
And Performance ◽  
Composite Samples ◽  
Magnetic And Electrical Properties

In this paper, ferroelectric–ferrimagnetic ceramic composites based on multicomponent PZT-type (PbZr1-xTixO3-type) material and ferrite material with different percentages in composite compositions were obtained and studied. The ferroelectric component of the composite was a perovskite ceramic material with the chemical formula Pb0.97Bi0.02(Zr0.51Ti0.49)0.98(Nb2/3Mn1/3)0.02O3 (P), whereas the magnetic component was nickel-zinc ferrite with the chemical formula Ni0.5Zn0.5Fe2O4 (F). The process of sintering the composite compounds was carried out by the free sintering method. Six ferroelectric-ferrimagnetic ceramic P-F composite compounds were designed and obtained with different percentages of its components, i.e., 90/10 (P90-F10), 85/15 (P85-F15), 80/20 (P80-F20), 60/40 (P60-F40), 40/60 (P40-F60), and 20/80 (P20-F80). X-ray diffraction patterns, microstructural, ferroelectric, dielectric, magnetic properties, and DC electrical conductivity of the composite materials were investigated. In this study, two techniques were used to image the microstructure of P-F composite samples: SB (detection of the signals from the secondary and backscattered electron detectors) and BSE (detection of backscattered electrons), which allowed accurate visualization of the presence and distribution of the magnetic and ferroelectric component in the volume of the composite samples. The studies have shown that at room temperature, the ceramic composite samples exhibit good magnetic and electrical properties. The best set of physical properties and performance of composite compositions have ceramic samples with a dominant phase of ferroelectric component and a small amount of the ferrite component (P90-F10). Such a composition retains the high ferroelectric properties of the ferroelectric component in the composite while also acquiring magnetic properties. These properties can be prospectively used in new types of memory and electromagnetic converters.

scholarly journals Study of magnetic and electrical properties of Pr0.65Ca0.25Ba0.1MnO3manganite

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31755-31763 ◽  
Author(s):  
Ali Mleiki ◽  
R. Hanen ◽  
H. Rahmouni ◽  
N. Guermazi ◽  
K. Khirouni ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Electrical Properties ◽  
Magnetocaloric Effect ◽  
Electrical Data ◽  
Magnetic And Electrical Properties

The magnetic properties and magnetocaloric effect in Pr0.65Ca0.25Ba0.1MnO3compound have been investigated supplemented by electrical data.

Optimization of the Effective Parameters on the Synthesis of the Mn-Zn Ferrite Powder with a High Saturation Magnetization Using Different Iranian Routs of Iron Oxide

2007 ◽  
Vol 336-338 ◽  
pp. 703-705
Author(s):  
S.A. Seyyed Ebrahimi ◽  
H. Sepehri Amin ◽  
Y. Hormozan ◽  
P. Tabibzadeh
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Electrical Properties ◽  
Raw Materials ◽  
Ferrite Powder ◽  
High Saturation Magnetization ◽  
Chemical Formula ◽  
Effective Parameters ◽  
Zn Ferrite ◽  
Temperature Time

Mn-Zn ferrites with chemical formula (Mn-Zn) Fe2O4 have widespread applications in the electrical and electronics industries. These ferrites are synthesized generally by conventional method. This method, which contains calcination of raw materials, is affected by several parameters such as composition and purity of the raw materials and temperature, time and atmosphere of the process. Optimization of these parameters is very important because these parameters affect the magnetic and electrical properties of the material. In this work, the ratio of the different Iranian routs of the raw materials for production of high Ms ferrite powder has been optimized and the effects of calcination conditions have been investigated using XRD, DTA/TGA techniques. The magnetic properties have also been measured.

Effects of Donor Doping on Microstructure and Electrical Properties of Bismuth Layer-Structured Bi4Ti3O12 Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 259-262 ◽  
Author(s):  
Lina Zhang ◽  
Su Chuan Zhao ◽  
Liao Ying Zheng ◽  
Guo Rong Li ◽  
Qing Rui Yin
Keyword(s):  
Electrical Conductivity ◽  
High Temperature ◽  
Electrical Properties ◽  
Ferroelectric Properties ◽  
Orthorhombic Phase ◽  
X Ray Diffraction ◽  
Suitable Candidate ◽  
X Ray ◽  
Donor Doping ◽  
Diffraction Patterns

A study was conducted on the effects of donor dopants, Nb2O5 and WO3, on microstructure and electric properties of Bi4Ti3O12 (BIT) ceramics. X-ray diffraction patterns of the materials showed a single orthorhombic phase structure. The microstructure results revealed the appearance of plate-like grain. The donor doping decreased the conductivity of BIT by as much as 3 orders of magnitude. The dielectric and ferroelectric properties of doped-BIT materials were also investigated. The decrease in the electrical conductivity allowed the doped samples to be poled to develop piezoelectricity. Thermal annealing studies of the samples indicated the donor-doped BIT were suitable candidate materials for high-temperature piezoelectric applications.

Impact of Gd3+ substitution on the structural, magnetic and electrical properties of cobalt ferrite nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73714-73725 ◽  
Author(s):  
C. Murugesan ◽  
G. Chandrasekaran
Keyword(s):  
Magnetic Properties ◽  
Electrical Properties ◽  
Crystallite Size ◽  
Cobalt Ferrite ◽  
Ferrite Nanoparticles ◽  
Memory Storage ◽  
Cobalt Ferrite Nanoparticles ◽  
Electrical And Magnetic Properties ◽  
Magnetic And Electrical Properties

Gd substitution reduces the crystallite size of cobalt ferrite nanoparticles and enhances their electrical and magnetic properties, which could enable a higher memory storage capability.

Structural, magnetic and electrical properties of RFeO3 (R= Dy, Ho, Yb & Lu) compounds

2021 ◽  
Author(s):  
Mehrnoush Nakhaei ◽  
Davoud Sanavi Khoshnoud
Keyword(s):  
Dielectric Constant ◽  
Rare Earth ◽  
Electrical Properties ◽  
Sol Gel ◽  
Magnetic Hysteresis ◽  
Combustion Method ◽  
Rare Earth Ion ◽  
Gel Combustion ◽  
Diffraction Patterns ◽  
Magnetic And Electrical Properties

Abstract The nanosized rare earth orthoferrites (RFeO3) with R= Dy, Ho, Yb & Lu were synthesis by sol-gel combustion method. The effects of varying rare earth ion on structural, magnetic and electrical properties of RFeO3 nanoparticles (NPs) have been studied. X-ray diffraction patterns of the prepared samples were in single phase with orthorhombic structure with space group Pbnm. The magnetic hysteresis measurements indicated the decrease in the antiferromagnetic nature of RFeO3 from Dy to Lu that can be ascribed to increasing noncollinear Fe moments because of the structural distortion. The electric hysteresis of these samples exhibited narrow electric field-polarization loops. The frequency response of dielectric constant of RFeO3 explained based on dipole relaxation process and Maxwell-Wagner model. In addition, the temperature dependence of dielectric constant illustrated an anomaly in the vicinity of the Neel temperature of RFeO3 compounds. This occurrence indicate that a coupling exist between magnetic and electric orders.

scholarly journals Electrophysical properties of the multiferroic PFN–ferrite composites obtained by spark plasma sintering and classical technology

2020 ◽  
Vol 126 (11) ◽  
Author(s):  
Przemysław Niemiec ◽  
Joanna A. Bartkowska ◽  
Dagmara Brzezińska ◽  
Grzegorz Dercz ◽  
Zbigniew Stokłosa
Keyword(s):  
Spark Plasma Sintering ◽  
Ferroelectric Properties ◽  
Ceramic Composites ◽  
Ferrite Powder ◽  
Composite Powders ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Ferrite Composites ◽  
Sintering Method ◽  
Composite Samples

AbstractThe multiferroic (ferroelectric–ferromagnetic) composites (PFN–ferrite) based on ferroelectromagnetic PbFe1/2Nb1/2O3 powder and ferrite powder (zinc–nickel ferrite, NiZnFeO4) were obtained in the presented study. The ceramic PFN–ferrite composites consisted of 90% powder PFN material and 10% powder NiZnFeO4 ferrite. The ceramic powders were synthesized by the classical technological method using powder calcination, while densification of the composite powders (sintering) was carried by two different methods: (1) free sintering method (FS) and (2) spark plasma sintering (SPS). The composite PFN–ferrite samples were thermally tested, including DC electrical conductivity and dielectric properties. Besides, XRD, SEM, EDS (energy-dispersive spectrometry) and ferroelectric properties (hysteresis loop) of the composite samples were tested at room temperature. At the work, a comparison was made for the results measured for PFN–ferrite composite samples obtained by two methods. The X-ray examination of multiferroic ceramic composites confirmed the occurrence of the strong diffraction peaks derived from ferroelectric (PFN) matrix of composite as well as weak peaks induced by the ferrite component. At the same time, the studies showed the absence of other undesired phases. The results presented in this work revealed that the ceramic composite obtained by two different technological sintering methods (free sintering method and spark plasma sintering technique) can be the promising materials for functional applications, for example, in sensors for magnetic and electric fields.

Preparation of Pb(Zr0.52Ti0.48)O3-Ni0.5Zn0.5Fe2O4 Bilayer Thin Films and their Magnetic and Ferroelectric Properties

2012 ◽  
Vol 248 ◽  
pp. 212-217
Author(s):  
Fu Xue Yan ◽  
Gao Yang Zhao ◽  
Na Song ◽  
Yuan Qing Chen
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Electrical Properties ◽  
Composite Film ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Composite Films ◽  
Gel Method ◽  
X Ray ◽  
Vibration Sample Magnetometer

Ni0.5Zn0.5Fe2O4-Pb(Zr0.52Ti0.48)O3 (NZFO-PZT) composite films were prepared using sol–gel method on Si (100) substrate with different bilayer structures, namely, the NZFO/PZT (NP) and the PZT/NZFO (PN). Their structure, magnetic and ferroelectric properties were characterized by X-ray diffractometer (XRD), vibration sample magnetometer (VSM) and ferroelectric testing unit. Both the NP and the PN films exhibit coexistence of magnetic and ferroelectric properties. The overlapping sequence has much influence on the electrical properties. Whereas, such an overlapping structure of the films has slightly effect on its magnetic properties. The NP structured composite film is more suitable to get a promising magnetoelectric coupling.

scholarly journals Influences of Sr2+ Doping on Microstructure, Giant Dielectric Behavior, and Non-Ohmic Properties of CaCu3Ti4O12/CaTiO3 Ceramic Composites

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1994
Author(s):  
Jutapol Jumpatam ◽  
Bundit Putasaeng ◽  
Narong Chanlek ◽  
Prasit Thongbai
Keyword(s):  
Electrical Properties ◽  
Solid State Reaction Method ◽  
Ceramic Composites ◽  
Lattice Parameter ◽  
Dielectric Behavior ◽  
Single Step ◽  
Nominal Composition ◽  
X Ray ◽  
Giant Dielectric ◽  
Diffraction Patterns

The microstructure, dielectric response, and nonlinear current-voltage properties of Sr2+-doped CaCu3Ti4O12/CaTiO3 (CCTO/CTO) ceramic composites, which were prepared by a solid-state reaction method using a single step from the starting nominal composition of CCTO/CTO/xSrO, were investigated. The CCTO and CTO phases were detected in the X-ray diffraction patterns. The lattice parameter increased with increasing Sr2+ doping concentration. The phase compositions of CCTO and CTO were confirmed by energy-dispersive X-ray spectroscopy with elemental mapping in the sintered ceramics. It can be confirmed that most of the Sr2+ ions substituted into the CTO phase, while some minor portion substituted into the CCTO phase. Furthermore, small segregation of Cu-rich was observed along the grain boundaries. The dielectric permittivity of the CCTO/CTO composite slightly decreased by doping with Sr2+, while the loss tangent was greatly reduced. Furthermore, the dielectric properties in a high-temperature range of the Sr2+-doped CCTO/CTO ceramic composites can be improved. Interestingly, the nonlinear electrical properties of the Sr2+-doped CCTO/CTO ceramic composites were significantly enhanced. The improved dielectric and nonlinear electrical properties of the Sr2+-doped CCTO/CTO ceramic composites were explained by the enhancement of the electrical properties of the internal interfaces.

Sign in / Sign up

Export Citation Format

Share Document