Spin-glass magnetic ordering in CoMgGaO2BO3 ludwigite

Автор(и)

  • N.B. Ivanova Siberian Federal University, 26 Kirensky Str., Krasnoyarsk, 660074, Russia
  • M.S. Platunov L.V. Kirensky Institute of Physics, SB of RAS, Akademgorodok, Krasnoyarsk, 660036, Russia
  • Yu.V. Knyazev Siberian Federal University, 26 Kirensky Str., Krasnoyarsk, 660074, Russia
  • N.V. Kazak L.V. Kirensky Institute of Physics, SB of RAS, Akademgorodok, Krasnoyarsk, 660036, Russia
  • L.N. Bezmaternykh L.V. Kirensky Institute of Physics, SB of RAS, Akademgorodok, Krasnoyarsk, 660036, Russia
  • E.V. Eremin L.V. Kirensky Institute of Physics, SB of RAS, Akademgorodok, Krasnoyarsk, 660036, Russia
  • A.D. Vasiliev Siberian Federal University, 26 Kirensky Str., Krasnoyarsk, 660074, Russia

DOI:

https://doi.org/10.1063/1.3679627

Ключові слова:

transition metal ludwigites, spin-glass freezing.

Анотація

The single crystal needle shape samples of diamagnetically diluted cobalt ludwigite CoMgGaO2BO3 have been grown by the flux method. The results of x-ray diffraction and both dc and ac magnetic measurements are presented. The unit cell volume undergoes a noticable growth under dilution from 328.31 Å3 for the parent compound Co3O2BO3 to 345.46 Å3 for CoMgGaO2BO3. The temperature of magnetic transition is considerably lower for the latter compound (25 K against 43 K for Co3O2BO3). The dc magnetization temperature dependencies undergo the splitting of field cooled and zero-field cooled regimes and the ac magnetic susceptibility temperature dependencies are frequency dependent pointing out a possible spin-glass freezing in the magnetic system.

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Опубліковано

2011-12-20

Як цитувати

(1)
Ivanova, N.; Platunov, M.; Knyazev, Y.; Kazak, N.; Bezmaternykh, L.; Eremin, E.; Vasiliev, A. Spin-Glass Magnetic Ordering in CoMgGaO2BO3 Ludwigite. Fiz. Nizk. Temp. 2011, 38, 214-217.

Номер

Том 38 № 2 (2012)

Розділ

Низькотемпературний магнетизм

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