Landau-model for the λ-transition in NaNo3

Landau-model for the λ-transition in NaNo3

A Landau free energy model with two biquadratically coupled order parameters adequately describes the non-classical (β = 0.22) temperature evolution of the orientational long-range order in NaNO 3 , and explains the cross-over to quasi-tricritical (β = 0.25) behaviour below 460K and the observed tai...

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Veröffentlicht in:Ferroelectrics 1990-07, Vol.107 (1), p.271-274
1. Verfasser: Wilhelm Schmahl, Wolfgang
Format: Artikel
Sprache:eng
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Zusammenfassung:A Landau free energy model with two biquadratically coupled order parameters adequately describes the non-classical (β = 0.22) temperature evolution of the orientational long-range order in NaNO 3 , and explains the cross-over to quasi-tricritical (β = 0.25) behaviour below 460K and the observed tail of excess order above the critical temperature of the λ-transition.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150199008221550