Magnetic ordering of antiferromagnetic trimer system 2b·3CuCl 2·2H2O

M. Sanda, K. Kubo, T. Asano, H. Morodomi, Y. Inagaki, T. Kawae, J. Wang, A. Matsuo, K. Kindo, T. J. Sato

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Abstract

In this paper, we present the magnetic properties of 2b·3CuCl 2·2H2O (b = betaine, C5H11NO 2). 2b·3CuCl2·2H2O is the first model substance for a two-dimensional S = 1/2 orthogonal antiferromagnetic trimer system. We have performed magnetic susceptibility, magnetization curve, and specific heat under extreme conditions: low temperatures and high magnetic fields in this system. The experimental results indicate that this substance is a magnetically S = 1/2 antiferromagnetic trimer system. The magnetization also shows one-third of the saturation value (MS ∼ 3.2μB/f.u.) between 5 and 14T The specific heat in a zero field shows a sharp peak at 1.38K corresponding to a long-range magnetic ordering, TN. As the magnetic field increases, the TN shifts remarkably to a lower temperature and is suppressed. Above 5T, the specific heat has no anomaly down to 150mK In the plateau region with an energy gap, the magnetic ordering seems to be disappeared.

Original languageEnglish
Article number032054
JournalJournal of Physics: Conference Series
Volume400
Issue numberPART 3
DOIs
Publication statusPublished - Jan 1 2012
Event26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
Duration: Aug 10 2011Aug 17 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Sanda, M., Kubo, K., Asano, T., Morodomi, H., Inagaki, Y., Kawae, T., Wang, J., Matsuo, A., Kindo, K., & Sato, T. J. (2012). Magnetic ordering of antiferromagnetic trimer system 2b·3CuCl 2·2H2O. Journal of Physics: Conference Series, 400(PART 3), [032054]. https://doi.org/10.1088/1742-6596/400/3/032054