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Electrical Property Analysis of Textured Ferroelectric Polycrystalline Antimony Sulfoiodide Using Complex Impedance
Anna Starczewska1, Bartłomiej Toroń1, Piotr Szperlich1
1Institute of Physics-Center for Science and Education, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland.
This study investigates the electrical properties of antimony sulfoiodide (SbSI), a ferroelectric semiconductor. Results show that impedance and related electrical parameters are highly temperature-dependent due to its internal domain structure and grain boundaries.
Area of Science:
- Solid-state physics
- Materials science
- Ferroelectric semiconductors
Background:
- Antimony sulfoiodide (SbSI) exhibits diverse physical properties, including optical, photoconductive, ferroelectric, and piezoelectric characteristics.
- Textured polycrystalline SbSI was prepared using rapid cooling of a melted mass in liquid nitrogen.
Purpose of the Study:
- To investigate the electrical properties of textured polycrystalline SbSI.
- To analyze the temperature dependence of impedance and related parameters using AC impedance spectroscopy.
Main Methods:
- AC impedance spectroscopy was employed over a wide temperature range (275–500 K) and frequency range (1 Hz to 100 kHz).
- Detailed studies of complex impedance (Z*(ω)), conductivity (σ*(ω)), electric modulus (M*(ω)), and dielectric permittivity (ε*(ω)) were conducted.
Main Results:
- The electrical properties, including impedance, conductivity, electric modulus, and dielectric permittivity, were found to be strongly dependent on temperature.
- First-time detailed analysis of these electrical parameters for textured polycrystalline SbSI was achieved.
Conclusions:
- The observed temperature dependence of electrical properties in textured polycrystalline SbSI can be attributed to its internal domain structure.
- Grain boundaries significantly influence the electrical characteristics of this ferroelectric semiconductor material.
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