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2010 | 118 | 5 | 973-974
Article title

CuBr_2(C_{10}H_8N_2) - S = 1/2 Two-Dimensional Rectangular Heisenberg Antiferromagnet

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Abstracts
EN
Magnetic susceptibility and X-band electron spin resonance study of a two-dimensional Heisenberg antiferromagnetic system CuBr_2(bipy), where bipy = C_{10}H_8N_2 is 4,4'-bipyridyl, has been performed in the temperature range from 300 K down to 2 K. A rhombic anisotropy of the g-factor was obtained from X-band EPR measurements with g_{x} = 2.037, g_{y} = 2.100 and g_{z} = 2.219. The temperature dependence of the magnetic susceptibility with a round maximum observed at 28 K suggests antiferromagnetic type of short-range order. No signature of the magnetic long-range order in studied compound was observed. The comparison of the magnetic susceptibility data with a two-dimensional rectangular Heisenberg model yields the values of intralayer exchange couplings J/k_{B} = - 47 K and J'/k_{B} = - 9.4 K.
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Contributors
author
  • Centre of Low Temperature Physics, P.J. Šafárik University, Park Angelinum 9, SK-04154 Košice, Slovak Republic
  • Centre of Low Temperature Physics, P.J. Šafárik University, Park Angelinum 9, SK-04154 Košice, Slovak Republic
  • Centre of Low Temperature Physics, P.J. Šafárik University, Park Angelinum 9, SK-04154 Košice, Slovak Republic
author
  • Centre of Low Temperature Physics, P.J. Šafárik University, Park Angelinum 9, SK-04154 Košice, Slovak Republic
author
  • Centre of Low Temperature Physics, P.J. Šafárik University, Park Angelinum 9, SK-04154 Košice, Slovak Republic
author
  • Institute for Low Temperature Physics and Engineering, Lenin Av. 47, 310164 Kharkov, Ukraine
author
  • National High Magnetic Field Laboratory, Tallahassee, FL 32310-3706, USA
  • Department of Physics and Center for Condensed Matter Sciences, University of Florida, Gainesville FL 32611-8440, USA
author
  • National High Magnetic Field Laboratory, Tallahassee, FL 32310-3706, USA
References
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv118n5106kz
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