HoFeTi2O7: Synthesis, Peculiarities of the Crystal Structure, and Magnetic Properties

Drokina, T. V.; Мolokeev, Maxim S.; Velikanov, D. A.; Petrakovskiı̌, G. A.; Bayukov, O. A.

doi:10.1134/s1063783420030075

Cited by 1 publication

(1 citation statement)

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“…In the paramagnetic state YbFeTi 2 O 7 , the fracture on the temperature dependence of the magnetic moment and the dependence of magnetization on the magnetic prehistory of the sample with a decrease in temperature indicates a transition from the paramagnetic state to the spinglass magnetic state with predominantly antiferromagnetic exchange interaction in the spin system [30]. In [31], the analysis of the temperature dependence of magnetic susceptibility allowed us to establish that at low temperatures in polycrystals of HoFeTi 2 O 7 spin glass states with competing exchange interactions between the nearest neighbors, as well as frustration of exchange interactions in the absence of a long-range magnetic order, are observed.…”

Section: Discussionmentioning

confidence: 99%

Nonlinearity and harmonics of the magnetic susceptibility of a Co-=SUP=-2+-=/SUP=- single-ion magnet in the paramagnetic region above the magnetic ordering temperature

Коплак

Dvoretskaya

Kunitsyna

et al. 2023

Physics of the Solid State

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In single-ion complexes based on Co2+ ions, the second and third harmonics of the magnetic susceptibility were found at temperatures of 2-4 K, which exceed the Neel temperature. The maxima of the second and third harmonics of the magnetic susceptibility are observed at a frequency of ~1 Hz, at which the maximum of the first harmonic is observed in a field of 3.2 kOe. An analysis of the dependences of the second and third harmonics of the magnetic susceptibility on the field and temperature showed that the nonlinearity arises as a result of the formation of a spin glass state at temperatures slightly higher than the Neel temperature. In this state, there is no long-range spin order, but there are spin clusters in the spin glass state. The spin-glass state in a compound with a Co2+ ion with a high magnetic anisotropy is unusual in that the exchange interaction is much smaller than the single-ion anisotropy energy. Keywords: molecular magnets, nonlinear magnetic susceptibility, nanostructures, spin dynamics, spin glass.

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Section: Discussionmentioning

confidence: 99%