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Abstract <p>The effect of gamma irradiation and electron irradiation on the crystal structure and magnetic properties of barium hexaferrite BaFe<sub>12</sub>O<sub>19</sub> (solid-phase synthesis) was studied. Irradiations caused changes in the ratio of crystalline phases and crystallite sizes, which resulted in changes in the main parameters of the hysteresis loop: coercive force, residual magnetization, saturation magnetization. These characteristics change nonmonotonically with varying dose, especially immediately after irradiation. In particular, the saturation magnetization measured at 300 K after γ-irradiation of the sample with a dose of 2.1 × 10<sup>7</sup> R decreased from the initial value of 52.5 to ∼40.2 emu/g.</p>

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Radiation-Induced Changes in the Structure and Magnetic Properties of Barium Hexaferrite

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • E. D. Shipkova,
  • N. S. Perov,
  • R. A. Makaryin,
  • A. Yu. Punda,
  • V. E. Zhivulin,
  • D. A. Vinnik,
  • M. K. Salakhitdinova,
  • E. M. Ibragimova,
  • A. B. Granovskiy

摘要

Abstract

The effect of gamma irradiation and electron irradiation on the crystal structure and magnetic properties of barium hexaferrite BaFe12O19 (solid-phase synthesis) was studied. Irradiations caused changes in the ratio of crystalline phases and crystallite sizes, which resulted in changes in the main parameters of the hysteresis loop: coercive force, residual magnetization, saturation magnetization. These characteristics change nonmonotonically with varying dose, especially immediately after irradiation. In particular, the saturation magnetization measured at 300 K after γ-irradiation of the sample with a dose of 2.1 × 107 R decreased from the initial value of 52.5 to ∼40.2 emu/g.