Development of Diopside-Modified Marl-Based Dielectric Composite for Microelectronics Applications.

Area of Science:

• Materials Science
• Geochemistry
• Solid-State Chemistry

Background:

• Marl, a natural clay-rich carbonate rock, presents environmental and economic challenges.
• Abundant natural resources are key to developing sustainable composite materials.
• Improving dielectric properties is crucial for advanced electronic applications.

Purpose of the Study:

• To develop a novel composite material by modifying marl with diopside (CaMgSi2O6).
• To investigate the impact of diopside incorporation on the dielectric properties of marl.
• To assess the potential of this composite for electrochemical and microelectronic applications.

Main Methods:

• Solid-state reaction synthesis of the diopside-modified marl composite.
• Material characterization using X-ray fluorescence (XRF), laser particle size analysis, X-ray diffraction (XRD), infrared spectroscopy, and scanning electron microscopy (SEM).
• Dielectric property evaluation via impedance spectroscopy over a wide frequency range.

Main Results:

• The composite exhibited good phase homogeneity and a reduced average particle size (11.653 µm).
• Enhanced dielectric performance was observed, including increased permittivity and reduced dielectric losses.
• Stable dielectric properties were maintained across a broad frequency range (10 Hz to 10 MHz) with low temperature dependence.

Conclusions:

• The diopside-modified marl composite demonstrates significantly improved dielectric properties.
• This material shows promise for energy storage and dissipation in electrochemical and microelectronic devices.
• The use of natural resources like marl offers an economically and environmentally viable approach for advanced material development.