Magnetic and resonance properties of the two-dimensional S = 1 compound Ni5(TeO3)4Cl2 with frustrated geometry

Автор(и)

  • S.L. Gnatchenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • M.I. Kobets B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • E.N. Khatsko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • M. Baran Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02–688 Warsaw, Poland
  • R. Szymczak Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02–688 Warsaw, Poland
  • P. Lemmens Institute for Condensed Matter Physics, TU Braunschweig, D–38106 Braunschweig, Germany
  • H. Berger Institute of Physics of Complex Matter, EPFL, Lausanne, Switzerland

DOI:

https://doi.org/10.1063/1.2967507

Ключові слова:

low-dimensional magnet, frustration, magnetization, magnetic susceptibility, AFMR, magnetic phase transition.

Анотація

The magnetic and magnetoresonance properties of a new single-crystal compound Ni5(TeO3)4Cl2 are studied. The measurements of the magnetization and magnetic susceptibility of the crystal in a wide temperature range (5–300 K) made it possible to conclude that Ni5(TeO3)4Cl2 is a quasi-two-dimensional antiferromagnet with the easy magnetization axis a* directed perpendicular crystallographic plane bc and a magnetic ordering temperature TN ≈ 21 K. The resonance measurements at 4.2 K in wide range of frequencies (25–105 GHz) and magnetic field (up to 200 kOe) permitted us to obtain the frequency–field dependence of AFMR spectrum for a field applied along the easy magnetization axis a*. It is shown that the magnetic field directed along the antiferromagnetism axis (H||a*) induces the magnetic phase transition of a spin-flop type which is found to be Hsf ≈120 kOe. The magnetic resonance experimental data are described qualitatively in model of the biaxial antiferromagnet.

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Опубліковано

2008-07-03

Як цитувати

(1)
Gnatchenko, S.; Kobets, M.; Khatsko, E.; Baran, M.; Szymczak, R.; Lemmens, P.; Berger, H. Magnetic and Resonance Properties of the Two-Dimensional S = 1 Compound Ni5(TeO3)4Cl2 With Frustrated Geometry. Fiz. Nizk. Temp. 2008, 34, 789-803.

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Низькотемпературний магнетизм

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