This article is cited in 1 paper

Magnetism

Influence of zeolite water on paramagnetic and ferromagnetic resonances in the Co$_2$[Nb(CN)$_8$] $\cdot$ 8H$_2$O molecular magnet

A. I. Dmitriev^a, O. V. Koplak^a, M. V. Kirman^a, H. Tokoro^b, S. Ohkoshi^b, R. B. Morgunov<sup>a

a</sup> Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, Moscow region
^b The University of Tokyo, Tokyo, Japan

Abstract: The contributions of Co$^{2+}$ and Nb$^{4+}$ ions to the high-frequency dynamic magnetic susceptibility of the Co$_2$[Nb(CN)$_8$] $\cdot$ 8H$_2$O molecular magnet in the paramagnetic state at $T >$ 12 K are separated. It is found that the ferromagnetic ordering, which leads to the reconstruction of the electron paramagnetic resonance spectrum into the ferromagnetic resonance spectrum, occurs at $T <$ 12 K. The influence of zeolite water on the spectra of the paramagnetic and ferromagnetic resonances is found. Dehydration leads to a decrease in the time of the spin relaxation of the ferromagnetic system from 50 ps to 17 ps at $T$ = 4 K and to the variation in the temperature dependences of the widths of the lines and g factors in the electron spin resonance spectra.

Received: 21.02.2013

 English version: Physics of the Solid State, 2013, 55:8, 1663–1667

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