Abstract
Birefringence measurements in BaMnF4 show that the structural phase transition at Tc ̴ 250 K has a slight first-order character and exhibits some hysteresis. The exponent of the temperature dependence of the order parameter is βexp = 0.30 ± 0.02 in agreement with neutrons scattering results. The analysis of the magnetic contribution to the birefringence demonstrates that some magnetic short-range order subsists till Tc.
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© 1981 Plenum Press, New York
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Regis, M., Candille, M., St-Gregoire, P. (1981). Birefringence Study of BaMnF4 . In: Devreese, J.T., Lemmens, L.F., Van Doren, V.E., Van Royen, J. (eds) Recent Developments in Condensed Matter Physics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-1086-0_13
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DOI: https://doi.org/10.1007/978-1-4684-1086-0_13
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