Magnetic and resonance properties of ferrihydrite nanoparticles doped with cobalt

Описание

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1134/S1063783417030301

Аннотация: Powders of undoped ferrihydrite nanoparticles and ferrihydrite nanoparticles doped with cobalt in the ratio of 5: 1 have been prepared by hydrolysis of 3d-metal salts. It has been shown using Mossbauer spectroscopy that cobalt is uniformly distributed over characteristic crystal-chemical positions of iron ions. The blocking temperaПоказать полностьюtures of ferrihydrite nanoparticles have been determined. The nanoparticle sizes, magnetizations, surface anisotropy constants, and bulk anisotropy constants have been estimated. The doping of ferrihydrite nanoparticles with cobalt leads to a significant increase in the anisotropy constant of a nanoparticle and to the formation of surface rotational anisotropy with the surface anisotropy constant Ku = 1.6 ? 10–3 erg/cm2. © 2017, Pleiades Publishing, Ltd.

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Издание

Журнал: Physics of the Solid State

Выпуск журнала: Vol. 59, Is. 3

Номера страниц: 555-563

ISSN журнала: 10637834

Авторы

  • Stolyar S.V. (Siberian Federal University, Svobodny pr. 79, Krasnoyarsk, Russian Federation, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation)
  • Yaroslavtsev R.N. (Siberian Federal University, Svobodny pr. 79, Krasnoyarsk, Russian Federation)
  • Iskhakov R.S. (Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation)
  • Bayukov O.A. (Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation)
  • Balaev D.A. (Siberian Federal University, Svobodny pr. 79, Krasnoyarsk, Russian Federation, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation)
  • Dubrovskii A.A. (Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation)
  • Krasikov A.A. (Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation)
  • Ladygina V.P. (International Scientific Center for Organism Extreme States Research at the Presidium of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation)
  • Vorotynov A.M. (Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation)
  • Volochaev M.N. (Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation)

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