Magnetic phenomena in Co-containing layered double hydroxides

Автор(и)

  • Daniel E.L. Vieira Department of Materials and Ceramic Engineering, CICECO – Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
  • Augusto B. Lopes Department of Materials and Ceramic Engineering, CICECO – Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
  • Alexander Feher Institute of Physics, Faculty of Science, P.J. Šafárik University in Košice 9 Park Angelinum, Košice 04154, Slovakia
  • Erik Čižmár Institute of Physics, Faculty of Science, P.J. Šafárik University in Košice 9 Park Angelinum, Košice 04154, Slovakia
  • Roman Yu. Babkin O. Galkin Donetsk Institute for Physics and Engineering of the National Academy of Sciences of Ukraine 46 Nauky Ave., Kyiv 03680, Ukraine
  • Vladimir A. Desnenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
  • Elena L. Fertman B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
  • Yurii G. Pashkevich B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
  • Alexey V. Fedorchenko Institute of Physics, Faculty of Science, P.J. Šafárik University in Košice 9 Park Angelinum, Košice 04154, Slovakia
  • Andrei N. Salak Department of Materials and Ceramic Engineering, CICECO – Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
  • Mário G.S. Ferreira Department of Materials and Ceramic Engineering, CICECO – Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal

DOI:

https://doi.org/10.1063/1.5001299

Ключові слова:

layered structure, oxygen octahedra, static magnetization, effective magnetic moment.

Анотація

Magnetic behavior of CoII(n)AlIII layered double hydroxides (LDHs) (n = Co/Al = 2 and 3) intercalated withnitrate was studied as a function of temperature. Both LDH compounds are paramagnetic above about 8 K. A rapid increase of their magnetic moments occurs below this temperature until the moments reach the maximum values at Tmax of 4.0 K and 3.2 K for Co(2)Al–NO3 and Co(3)Al–NO3, respectively. Below Tmax, the zero-field-cooled and the field-cooled static magnetization curves are strongly different. Along with this low-temperature phenomena, Co(2)Al–NO3 and Co(3)Al–NO3 demonstrate anomalous behavior of their temperature dependence magnetic susceptibility in a higher-temperature range: between 75 and 175 K, both the paramagnetic Curie temperature and the effective magnetic moment change in a non-monotonous way. Possible structural reasons of the observed magnetic behavior of the CoII(n)AlIII LDHs are discussed.

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Опубліковано

2017-06-19

Як цитувати

(1)
Vieira, D. E.; Lopes, A. B.; Feher, A.; Čižmár, E.; Babkin, R. Y.; Desnenko, V. A.; Fertman, E. L.; Pashkevich, Y. G.; Fedorchenko, A. V.; Salak, A. N.; Ferreira, M. G. Magnetic Phenomena in Co-Containing Layered Double Hydroxides. Fiz. Nizk. Temp. 2017, 43, 1214-1218.

Номер

Том 43 № 8 (2017)

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