R2: Crystal structure, crystal chemistry, physical properties of minerals, crystal growth and applied mineralogy

[R2P-03] Temperature dependence of crystal structure of Mirabilite(Na₂SO₄・10H₂O)

*Ryutaro Ikeda¹, Atsushi Kyono¹ (1. Tsukuba Uni.Life and Environmental Sciences.)

Keywords:Mirabilite, Single-crystal X-ray diffraction , Phase change materials

The temperature-dependent single-crystal X-ray diffraction measurement of mirabilite (Na₂SO₄･10H₂O) was performed in the temperature range between 213 and 303 K. Here, we report the crystal structure change of mirabilite associated with the positional disorder of the O atoms at the tetrahedral apices.