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Article
Linear Chain Compounds: Metamagnetism in Co(pyr)2Cl2, Fe(pyr)2Cl2, Fe(pyr)2(NCS)2 and Ni(pyr)2Cl2
Proceedings of the 20th Annual Conference on Magnetism and Magnetic Materials
  • S. Foner, Massachusetts Institute of Technology
  • Richard B. Frankel, Massachusetts Institute of Technology
  • E. J. McNiff, Jr., Massachusetts Institute of Technology
  • W. M. Reiff, Northeastern University
  • B. F. Little, University of Missouri
  • Gary J. Long, University of Missouri
Publication Date
4-1-1975
Abstract
We report the observation of low field metamagnetic behavior in powder samples of Co(pyr)2Cl2, Fe(pyr)2Cl2, Fe(pyr)2(NCS)2 and Ni(pyr)2Cl2 where pyr=pyridine. These materials have linear chain structures with strong ferromagnetic interactions along the chains, and relatively weak antiferromagnetic interactions between chains. In all four compounds the transitions were observed as a rapid increase in the magnetic moment with increasing magnetic field. In Fe(pyr)2Cl2, Fe(pyr)2(NCS)2, and Ni(pyr)2Cl2, the transitions at 4.2 K were observed at 0.7 kG, 1.1 kG and 2.7 kG respectively. In the Co compound the transition (at ∠0.7 kG) was observed for T2Cl2 and Fe(pyr)2(NCS)2 are presented. Above the low field transitions the magnetic moment continues to increase and saturation is not achieved for applied fields up to 200 kG. High field Mössbauer data consistent with these results are discussed.
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Citation Information
S. Foner, Richard B. Frankel, E. J. McNiff, Jr., W. M. Reiff, et al.. "Linear Chain Compounds: Metamagnetism in Co(pyr)2Cl2, Fe(pyr)2Cl2, Fe(pyr)2(NCS)2 and Ni(pyr)2Cl2" Proceedings of the 20th Annual Conference on Magnetism and Magnetic Materials Vol. 24 (1975) p. 363 - 364
Available at: http://works.bepress.com/rfrankel/120/