PHYSICS & SPACE SCIENCES
BAKU STATE UNIVERSITY JOURNAL of
PHYSICS & SPACE SCIENCES
ISSN: 3006-6123 (ONLINE);     
Dielectric Properties of Magnetite-Containing Core–Satellite-Type Structures
Received: 24-Apr-2026 Accepted: 05-Jun-2026 Published: 30-Jun-2026 Read PDF Download PDF
Habiba A. Shirinova; Maarif A. Jafarov; Bakhtiyar G. Pashayev; Shirkhan A. Humbatov; Shovkat Z. Najafzada
DOI:
Abstract
BaTiO₃–Fe₃O₄ core–satellite particles were synthesized and incorporated into a PVDF matrix to obtain hybrid nanocomposite films. XRD analysis revealed reflections at 31.53°, 35.59°, 56.12°, and 62.73°, confirming the coexistence of tetragonal BaTiO₃ and cubic Fe₃O₄ phases in the hybrid structure. Dielectric spectroscopy in the range 25 Hz to 1 MHz showed a frequency-dependent decrease in dielectric permittivity for all compo-sitions, consistent with the reduced contribution of interfacial polarization at higher frequencies. The dielectric constant of neat PVDF was about 8 at 1 kHz, while the addi-tion of hybrid filler increased this value. For the sample containing 7% BaTiO₃–Fe₃O₄, the dielectric permittivity reached values close to 60. These findings confirm that the intro-duction of BaTiO₃–Fe₃O₄ hybrid particles substantially enhances the polarization capa-bility of the polymer matrix and improves the dielectric characteristics of the resulting nanocomposites

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