Related Experiment Video
Updated: Mar 16, 2026
07:03
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
9.3K
A new (Ba, Ca) (Ti, Zr)O3 based multiferroic composite with large magnetoelectric effect
M Naveed-Ul-Haq1, Vladimir V Shvartsman1, Soma Salamon2
1Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstraße 15, 45141 Essen, Germany.
Scientific Reports
|August 25, 2016
Summary
This study developed a new lead-free multiferroic composite using BCZT and CFO. The material exhibits a strong room-temperature magnetoelectric effect, surpassing similar BaTiO3-based composites.
Area of Science:
- Materials Science
- Solid State Physics
- Ceramic Engineering
Background:
- Lead-free ferroelectric ceramics are crucial for advanced electronic applications.
- Multiferroic materials exhibiting magnetoelectric coupling are highly sought after.
- 0.5Ba(Zr0.2Ti0.8)O3 - 0.5(Ba0.7Ca0.3)TiO3 (BCZT) shows excellent piezoelectric properties near its phase boundary.
Purpose of the Study:
- To synthesize and characterize a novel lead-free magnetoelectric multiferroic composite.
- To investigate the magnetoelectric coupling in a BCZT-CoFe2O4 composite.
- To evaluate the potential of this composite for modern electronics.
Main Methods:
- Synthesis of the BCZT-CoFe2O4 composite.
- Dielectric characterization to understand ferroelectric properties.
- Magnetic characterization to assess magnetostrictive behavior.
- Magnetoelectric characterization to quantify the coupling effect.
Main Results:
- The synthesized composite material is multiferroic at room temperature.
- A significant magnetoelectric effect was observed in the BCZT-CoFe2O4 composite.
- The observed magnetoelectric effect is superior to that of similar BaTiO3-CoFe2O4 composites.
Conclusions:
- The developed lead-free BCZT-CoFe2O4 composite is a promising material for multifunctional applications.
- This material demonstrates a notable magnetoelectric coupling at room temperature.
- The findings suggest potential for next-generation electronic devices utilizing multiferroic properties.
More Related Videos
08:00Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
11.7K
06:49Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates
Published on: April 12, 2019
8.2K
Related Concept Videos
01:31Ferromagnetism
3.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
3.4K
01:24Potential Due to a Magnetized Object
850
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
The vector...
850
03:02Colors and Magnetism
14.4K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.4K
01:30Paramagnetism
3.1K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
3.1K
01:31Magnetic Susceptibility and Permeability
2.6K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
2.6K
01:26Diamagnetism
3.2K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
3.2K