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Russian Journal of Inorganic Chemistry

, Volume 62, Issue 3, pp 281–287 | Cite as

Effect of the degree of doping on the size and magnetic properties of nanocrystals La1 – x Zn x FeO3 synthesized by the sol–gel method

  • M. V. KnurovaEmail author
  • I. Ya. Mittova
  • N. S. Perov
  • O. V. Al’myasheva
  • Nguyen Anh Tien
  • V. O. Mittova
  • V. V. Bessalova
  • E. L. Viryutina
Synthesis and Properties of Inorganic Compounds

Abstract

Nanopowders La1–x Zn x FeO3 (nominal degree of doping x nom = 0, 0.05, 0.075, 0.1, 0.15, 0.2, 0.3, and 0.4) were synthesized by the sol–gel method using aqueous ammonia as a precipitator and were then annealed at 950°C for 60 min. From the data of X-ray powder diffraction analysis and local electron probe microanalysis, the maximum actual limit of doping of lanthanum ferrite with zinc was determined: x = 0.072. The dependence of the particle size on the Zn2+ content was found to be nonmonotonic. The magnetic characteristics (specific magnetization J, coercivity H c, and magnetic susceptibility χ) of samples at temperatures of 300 and 100 K in fields of up to 1300 kA/m. It was shown that, with increasing degree of doping, J increases from 0.188 A m2/kg (at x = 0) to 0.245 A m2/kg (at x = 0.072), and χ varies nonmonotonically from 11.5 × 10–6 (at x = 0) to 15.3 × 10–6 (at x = 0.072) (at 300 K). With decreasing measurement temperature to 100 K, the magnetization and susceptibility monotonically increase.

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • M. V. Knurova
    • 1
    Email author
  • I. Ya. Mittova
    • 1
  • N. S. Perov
    • 2
  • O. V. Al’myasheva
    • 3
  • Nguyen Anh Tien
    • 4
  • V. O. Mittova
    • 5
  • V. V. Bessalova
    • 2
  • E. L. Viryutina
    • 1
  1. 1.Voronezh State UniversityVoronezhRussia
  2. 2.Lomonosov Moscow State UniversityMoscowRussia
  3. 3.Ul’yanov (Lenin) LETI St. Petersburg State Electrotechnical UniversitySt. PetersburgRussia
  4. 4.Ho Chi Min City University of EducationHo Chi Min CityViet Nam
  5. 5.Burdenko Voronezh State Medical UniversityVoronezhRussia

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