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Powder X-ray diffraction of low-temperature phases of Ag7NbS6

✍ Scribed by Mitsuko Onoda; Masataka Tansho; Hiroaki Wada; Motohiko Ishii

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 479 KB
Volume: 93
Category: Article
ISSN: 0167-2738
DOI: 10.1016/s0167-2738(96)00544-9

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✦ Synopsis

Low-temperature X-ray diffraction experiments revealed the existence of two low-temperature phases of Ag,NbS,, phase II (between about 280 and 140 K) and phase III (between about 140 and 10 K). The powder pattern of the phase II measured at 245 K could be indexed on the basis of monoclinic unit cell, A = 29.467(5), B = 14.770(3), C = 12.768(2) A, and /3 = 124.28( 1)". A probable assignment on the basis of a monoclinic superstructure model is proposed for the powder pattern of the phase III measured at 100 K.

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