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CC=Collection Code: [AB2X4]=ANX Form: [cF56]=Pearson: [e d a]=Wyckoff Symbol: [Al2MgO4]=Structure Type:
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TitlePressure-induced phase transition and pressure dependence of crystal structure in low (alpha) and Ca/Al-doped cristobalite.
AuthorsParise, J.B.;Yeganeh-Haeri, A.;Weidner, D.J.;Jorgensen, J.D.;Saltzberg, M.A.
ReferenceIC&volume=75&fpage=136&details=yes target=icsd_help>Journal of Applied Physics (1994) 75, 136-136
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Also: Phase Transition (1992) 38, 127-220
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CompoundO2 Si1 - [Cristobalite low] Silicon oxide [AX2] [tP12] [b a] [TeO2(alpha)]
Cell4.9780(1), 4.9780(1), 6.9321(1), 90., 90., 90.
P41212 (92) V=171.78
RemarksR=0.047000 : M =Cristobalite low : N P =39-1425 : =10 : T =298 : =TeO2(alpha) :
Metastable up to 500 K (2nd ref. , Tomaszewski), above Fd3-m
PDF 39-1425, 82-1403

Atom (site) Oxid. x, y, z, B, Occupancy
Si1(4a)4
O1(8b)-2
0.300.30001
0.230.100.1701
Atom (site) Oxid. U11, U22, U33, U12, U13, U23
Si1(4a)4
O1(8b)-2
0.000.000.000.00-0.00.00
0.020.000.01-0.00.000.00

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