Equivalent magnetic noise in multi- push-pull configuration magnetoelectric composites: model and experiment

Area of Science:

• Materials Science
• Condensed Matter Physics
• Electrical Engineering

Background:

• Magnetoelectric (ME) composites offer unique functionalities by coupling magnetic and electric properties.
• Understanding the performance of ME laminated composites is crucial for developing advanced sensors and actuators.

Purpose of the Study:

• To develop a theoretical model for multi-push-pull ME laminated composites.
• To derive analytical solutions for ME voltage coefficient (αE), ME charge coefficient (αQ), noise charge density, and equivalent magnetic noise.
• To investigate the influence of material properties and polyimide film geometry on these parameters.

Main Methods:

• Theoretical modeling of multi-push-pull ME laminated composites.
• Derivation of analytical solutions for key ME parameters.
• Parametric studies to analyze the impact of material properties and geometric factors.
• Comparison of theoretical predictions with experimental data.

Main Results:

• The ME voltage coefficient (αE) is primarily dependent on magnetostrictive and piezoelectric phase parameters.
• The ME charge coefficient (αQ) and noise charge density are influenced by component parameters, piezoelectric volume fraction, and polyimide film geometry.
• Equivalent magnetic noise depends on component parameters and piezoelectric volume fraction, independent of polyimide film geometry.
• Theoretical results show good agreement with experimental findings.

Conclusions:

• The developed theoretical model provides accurate predictions for the performance of ME laminated composites.
• Material properties, phase volume fractions, and geometric configurations significantly impact ME coefficients and noise characteristics.
• The findings are valuable for the design and optimization of ME devices.