Critical behaviour of a uniaxial ferromagnet,ErCl3·6H2O with predominant dipolar interactions |
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Authors: | P. Beauvillain C. Dupas J.P. Renard |
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Affiliation: | Institut d''Electronique Fondamentale, Laboratoire associé au C.N.R.S., Université Paris XI, Bât. 220, 91405 Orsay, France |
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Abstract: | The parallel magnetic susceptibility χ of a uniaxial ferromagnet ErCl3·6H2O has been measured between 0.3 and 4.2K and specially near Tc = 0.353 K. The predominant contribution to the Curie-Weiss temperature is due to the dipolar interactions. χ is proportional to ??γ with in the range 10?3 < ? < 5 × 10?2. The γ value, γ = 1.01 ±0.03 is consistent with the theoretical prediction for a uniaxial dipolar ferromagnet. |
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