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Article
Magnetic Properties of Linear Chain Systems: Metamagnetism of Single Crystal Co(pyridine)2Cl2
Journal of Chemical Physics
  • S. Foner, Massachusetts Institute of Technology
  • Richard B. Frankel, Massachusetts Institute of Technology
  • W. M. Reiff, Northeastern University
  • H. Wong, Northeastern University
  • Gary J. Long, University of Missouri-Rolla
Publication Date
6-1-1978
Abstract

The metamagnetic behavior of the low temperature properties of single crystal Co(pyridine)2Cl2 is discussed. At 1.25 K oriented single crystals exhibit a two‐step metamagnetic transition at applied fields ∼0.8 and 1.6 kG along the b‐axis, a single transition at ∼0.7 kG for applied fields along the a∗ axis, and a single transition at ∼4.2 kG for an applied field along the c axis. Just above the transition fields a moment of 2μB/Co atom is measured for B0 parallel to the a∗ axis or b axis, and 0.4μB/Co atom is measured for the B0 parallel to the c axis. A large field dependent moment is observed at high fields. Many features of this compound closely mirror the behavior of CoCl2⋅2H2O. However, the Co(pyridine)2Cl2 has a much smaller interchain exchange, so that many features can be examined at lower fields. The basic features are consistent with a six‐sublattice model for the ordered antiferromagnetic system. Measurements of magnetic moment versus temperature show that Co(pyridine)2Cl2 does not obey a Curie–Weiss law even at relatively high temperatures.

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Publisher statement
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Chemical Physics.
Citation Information
S. Foner, Richard B. Frankel, W. M. Reiff, H. Wong, et al.. "Magnetic Properties of Linear Chain Systems: Metamagnetism of Single Crystal Co(pyridine)2Cl2" Journal of Chemical Physics Vol. 68 Iss. 11 (1978) p. 4781 - 4789
Available at: http://works.bepress.com/rfrankel/3/