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Critical exponents of EuTe from specific-heat and thermal-expansion measurements

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Critical_exponents_Scheer_JMagnMagMat.pdf
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1992

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Wosnitza, Jochen
Löhneysen, Hilbert von
Kürsch, R.
Lang, M.
Steglich, Frank

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Journal of Magnetism and Magnetic Materials. 1992, 104-107(Part 1), pp. 175-176. Available under: doi: 10.1016/0304-8853(92)90753-B

Zusammenfassung

The antiferromagnet EuTe shows a distinct cross-over behavior in the specific heat C when approaching the Néel temperature T h = 9.8 K. For J t ] = [(T - 7N) / T N ]> 0.01 the critical exponent of the specific heat, C ~ r t ] -", is almost zero, oL = 0.0085-t-0.003. Closer to TN, for 0.0015 0.01 and o~ = 0.43-+0.2 for 0.001 < l tl < 0.03. Although EuTe is considered to be a Heisenberg antiferromagnet, some anisotropy might be expected because of dipolar interactions, possibly causing the observed cross-over.

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530 Physik

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ISO 690SCHEER, Elke, Jochen WOSNITZA, Hilbert von LÖHNEYSEN, R. KÜRSCH, M. LANG, Frank STEGLICH, 1992. Critical exponents of EuTe from specific-heat and thermal-expansion measurements. In: Journal of Magnetism and Magnetic Materials. 1992, 104-107(Part 1), pp. 175-176. Available under: doi: 10.1016/0304-8853(92)90753-B
BibTex
@article{Scheer1992Criti-9289,
  year={1992},
  doi={10.1016/0304-8853(92)90753-B},
  title={Critical exponents of EuTe from specific-heat and thermal-expansion measurements},
  number={Part 1},
  volume={104-107},
  journal={Journal of Magnetism and Magnetic Materials},
  pages={175--176},
  author={Scheer, Elke and Wosnitza, Jochen and Löhneysen, Hilbert von and Kürsch, R. and Lang, M. and Steglich, Frank}
}
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