Manifestation of Spin-Glass-Like Behavior in the Organometallic Magnet
V.P. Dyakonova,c, M. Arciszewskaa, W. Dobrowolskia, A. Szewczyka, H. Szymczaka, E. Aksymentievab, V. Varyukhinc, E. Zubovc and M.U. Gutowskaa
a Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
b Lviv State University, Lviv, Ukraine
c Donetsk Physico-Technical Institute, Ukraine
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Ac susceptibility (χac) and dc magnetization (Mdc) of the organometallic magnet Na[FeO6(C10H8N)3] have been studied in temperature range of 4.2-200 K, in an external magnetic field up to 16 kOe. Some peculiarities of the χac and M dc behavior, which are characteristic of spin-glasses, e.g. cusps in the susceptibility and zero-field-cooled magnetization, an irreversibility between the field-cooled and zero-field-cooled magnetization and dependences of the Tcusp temperature on the frequency and the intensity of the magnetic field, were observed at low temperatures.
DOI: 10.12693/APhysPolA.97.863
PACS numbers: 75.30.Kz, 75.40.Cx