Journal of Mineralogical and Petrological Sciences
Online ISSN : 1349-3825
Print ISSN : 1345-6296
ISSN-L : 1345-6296

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Determination of orientational ordering of hydroxy groups in kulanite between 120-353 K using single-crystal X-ray diffraction
Ryo Yamane Makoto TokudaKazumasa Sugiyama
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JOURNAL FREE ACCESS Advance online publication

Article ID: 220701

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Abstract

We conducted single-crystal X-ray diffraction experiments on kulanite [Ba(Fe2+, Mn2+, Mg2+)2(Al, Fe3+)2(PO4)3(OH)3] to investigate the potential orientational ordering of its hydroxy groups. Our structural refinements showed no sign of a phase transition between 120 and 353 K. Additionally, the orientation of the hydroxy group was determined uniquely along the c-axis for the measured temperature range of 120-353 K.

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