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Abstract <p>Multiferroic composites consisting of barium–strontium titanate and nickel ferrite have been successfully synthesized by low-temperature sintering in the form of thick films on a dielectric substrate. The crystal structure and composition of the composites were studied by X-ray diffraction and electron microscopy. The electrical and magnetic characteristics of the obtained composites were studied at microwaves. The studied samples demonstrate a dielectric permittivity from 80 to 160 and dielectric losses from 0.05 to 0.1 at a frequency of 1 GHz, as well as the ability to control the magnetization of the composite within 30% by changing the magnetization field in the range 0–2000 Oe. This is the first successful attempt to synthesize a ferroelectric/ferrite composite with both low microwave losses and magnetization controllability.</p>

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Structure and Microwave Properties of Thick-Film Composite Materials BaSrTiO3/NiFe2O4

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • A. Tumarkin,
  • N. Tyurnina,
  • Z. Tyurnina,
  • O. Sinelshchikova,
  • D. Tsygankova,
  • A. Drozdovskii,
  • A. Karamov,
  • A. Bogdan

摘要

Abstract

Multiferroic composites consisting of barium–strontium titanate and nickel ferrite have been successfully synthesized by low-temperature sintering in the form of thick films on a dielectric substrate. The crystal structure and composition of the composites were studied by X-ray diffraction and electron microscopy. The electrical and magnetic characteristics of the obtained composites were studied at microwaves. The studied samples demonstrate a dielectric permittivity from 80 to 160 and dielectric losses from 0.05 to 0.1 at a frequency of 1 GHz, as well as the ability to control the magnetization of the composite within 30% by changing the magnetization field in the range 0–2000 Oe. This is the first successful attempt to synthesize a ferroelectric/ferrite composite with both low microwave losses and magnetization controllability.