What is magnetoelectric materials?

Magnetoelectric materials are multiferroic showing magnetic field induced polarization and electric field induced magnetization (coupling between magnetization and polarization with their respective electric and magnetic fields). All magnetoelectric are multiferroics but all mutiferroics are not magnetoelectrics.

What is magnetoelectric coupling?

In its most general form, the magnetoelectric effect (ME) denotes any coupling between the magnetic and the electric properties of a material. The first example of such an effect was described by Wilhelm Röntgen in 1888, who found that a dielectric material moving through an electric field would become magnetized.

What is magnetoelectric coefficient?

The magnetoelectric (ME) coefficient αME=dE∕dH=dV∕(tdH) is the most critical indicator for the magnetoelectric coupling properties in multiferroic materials, where V is the induced magnetoelectric voltage, H is the exciting ac magnetic field, and t is the thickness of the sample used for measuring V across the laminate …

What is magnetoelectric polarizability?

Magnetoelectric (ME) effect is characterized by appearance of an electric polarization (P) tempered by a magnetic field (H) or vice-versa. There are various types of piezoelectric (PE) and piezo magnetic (PM) materials and combination of which can lead to excellent ME effect.

How do you find the magnetoelectric coefficient?

magnetoelectric effect in a given composite is usually characterized by measuring the magnetoelectric coefficient, α = dE/dH where E is electric field and H is the magnetic field.

What is magnetostrictive transducer?

A magnetostrictive transducer makes use of a type of magnetic material in which an applied oscillating magnetic field squeezes the atoms of the material together, creating a periodic change in the length of the material and thus producing a high-frequency mechanical vibration.

What is a magnetostrictive sensor?

The magnetostrictive sensor (MsS) is a type of transducer which can generate and detect time-varying stresses or strains in ferromagnetic materials.

What are multiferroic properties?

Multiferroic Materials: Physics and Properties Multiferroics are materials that simultaneously exhibit more than one type of ordering, including magnetic, electric, and elastic order.

How is magnetoelectric effect measured?

The traditional method for measuring magnetoelectric effect is to stimulate the sample with a magnetic field while measuring the voltage generated across the sample. These voltages can be so small that a lock-in amplifier is required to pull the signal out of ambient noise.