Magnetic resonance properties and crystallization of the low-dimensional magnet [NH2(CH3)2]MnCl3·2H2O
A. A. StepanovPresent address: MPI/SNCI, BP-166X, 38042 Grenoble, FranceE. N. KhatskoB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovM. I. KobetsB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovВ. А. ПащенкоB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovA. I. KaplienkoB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovA. S. ChernyĭB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovV. V. MitkevichB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovS. M. TretyakB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovV. B. KapustyanykL’vov State University, 290602, L’vov, Ukraine
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Аннотация
The crystal structure of a single crystal of [NH2(CH3)2]MnCl3 · 2H2O is studied. It is shown that this compound belongs to the monoclinic system with a space group C2/c. The static magnetic susceptibility and magnetization are studied in the temperature range 0.7–300 K. A comparison with the theoretical models indicates the one-dimensional nature of the magnetic structure. The frequency field diagram of the AFMR spectrum is reconstructed at T=4.2 K, and the effective parameters of magnetic interactions are determined.
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