A study on synthesis and characterization of non-stoichiometric hardystonite Ca2ZnSi2O7 for optical and dielectric applications

Hardystonite (Ca2ZnSi2O7) was prepared using non-stoichiometric composition by solid-state method at 1200 C. Structural analysis revealed that Hardystonite (Ca2ZnSi2O7) as a major phase and Wollastonite (CaSiO3) as a minor phase for all samples with no other impurity peak. Morphological analysis revealed irregular agglomerated morphology with a particle size of 323 mu m. The optical band gap ranges from 4.48 to 5.0 eV suitable for sensors, bolometers, and optoelectronic applications. Dielectric constant (3.4-7.7), Resistivity (2.6 x 10(-8)-4.5 x 10(-7) omega m), and AC conductivity were found at 2.1 x 10(-7)-3.8 x 10(-7) Sm-1, making it suitable for Low temperature co-fired (LTCC) applications.

Automated summary

Hardystonite (Ca2ZnSi2O7) was prepared using a non-stoichiometric composition by the solid-state method at 1200 C. The results showed that it has a suitable optical band gap, dielectric constant, resistivity, and AC conductivity for sensor, bolometer, and optoelectronic applications.