Radiation changes of structure and magnetic properties of barium hexaferrite

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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 changes were non-monotonic depending on the 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 P decreased from the initial value of 52.5 to ~ 40.2 emu/g.

About the authors

E. D Shipkova

Lomonosov Moscow State University

Email: Shipkova_liza@mail.ru
Moscow, Russia

N. S Perov

Lomonosov Moscow State University

Moscow, Russia

R. A Makaryin

Lomonosov Moscow State University

Moscow, Russia

A. Yu Punda

South Ural State University (National Research University)

Chelyabinsk, Russia

V. E Zhivulin

South Ural State University (National Research University)

Chelyabinsk, Russia

D. A Vinnik

South Ural State University (National Research University); Moscow Institute of Physics and Technology (National Research University); Saint Petersburg State University

Chelyabinsk, Russia; Moscow, Russia; Saint Petersburg, Russia;

M. K Salakhitdinova

Sharof Rashidov Samarkand State University

Samarkand, Uzbekistan

E. M Ibragimova

Institute of Nuclear Physics of the Academy of Sciences of the Republic of Uzbekistan

Tashkent, Uzbekistan

A. B Granovsky

Lomonosov Moscow State University; Sharof Rashidov Samarkand State University; Institute of Theoretical and Applied Electrodynamics of the Russian Academy of Sciences

Moscow, Russia; Samarkand, Uzbekistan; Moscow, Russia

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