Reinvestigation of the structure of (ND4
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I Tamura; Y Noda; Y Morii
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Article
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1999
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Elsevier Science
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English
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The space group of (ND 4 ) 3 D(SO 4 ) 2 and (NH 4 ) 3 H(SO 4 ) 2 was reported in the literature to be A2/a at the room temperature phase. However, several new Bragg reflections which violated the extinction rule of the a-glide symmetry of the space group A2/a were found by neutron scattering experim