Structural, magnetic, electronic, and dilatation properties of the ordered solid solutions Ln(0.2)Sr(0.8)CoO(3-delta) (Ln = Sm, Gd, Dy) with the same oxygen nonstoichiometry index delta : научное издание | Научно-инновационный портал СФУ

Structural, magnetic, electronic, and dilatation properties of the ordered solid solutions Ln(0.2)Sr(0.8)CoO(3-delta) (Ln = Sm, Gd, Dy) with the same oxygen nonstoichiometry index delta : научное издание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1016/j.jallcom.2020.154629

Ключевые слова: Rare earth cobalt oxide solid solutions, Layered perovskite-type cobalt oxides, Structural, Magnetic, Electronic, Dilatation properties

Аннотация: Single-phase samples of the layered perovskite-like cobalt oxides Ln(0.2)Sr(0.8)CoO(3-delta) (Ln = Sm, Gd, Dy) with the same oxygen nonstoichiometry index delta = 0.37 +/- 0.01 were synthesized. All samples are characterized by a tetragonal unit cell with the space group I4/mmm. The structural, magnetic, electric transport and dilatation properties of the obtained samples are investigated. The studied samples are characterized by two anomalies in magnetic properties, a high-temperature maximum near T-m = 350 K with magnetic field hysteresis below T-m, and a diffuse peak in the intermediate temperature range, which shifts with ionic radius decrease of the rare-earth element to higher temperatures. The high-temperature maxima of the magnetic susceptibility correlate with anomalies in thermal expansion, heat capacity and the features in the temperature dependences of the electrical resistivity, pointing to a strong relationship between the structural, magnetic and electronic degrees of freedom. The given comparative analysis of the experimental data of various substituting rare-earth elements with the same oxygen nonstoichiometry has been carried out for the first time. (c) 2020 Elsevier B.V. All rights reserved.

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Издание

Журнал: JOURNAL OF ALLOYS AND COMPOUNDS

Выпуск журнала: Vol. 830

Номера страниц: 154629

Место издания: LAUSANNE

Издатель: ELSEVIER SCIENCE SA

Авторы

  • Dudnikov V.A. (RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Orlov Yu. S. (RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Bushinsky M.V. (NAS Belarus, Sci Pract Mat Res Ctr, Minsk 220072, BELARUS)
  • Solovyov L.A. (RAS, Fed Res Ctr KSC SB, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Vereshchagin S.N. (RAS, Fed Res Ctr KSC SB, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Gavrilkin S.Yu (Lebedev Phys Inst, Moscow 119991, Russia)
  • Tsvetkov A.Yu (Lebedev Phys Inst, Moscow 119991, Russia)
  • Gorev M.V. (RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Novikov S.V. (Russian Acad Sci, Ioffe Inst, St Petersburg 194021, Russia)
  • Mantytskaya O.S. (NAS Belarus, Sci Pract Mat Res Ctr, Minsk 220072, BELARUS)
  • Ovchinnikov S.G. (RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)

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