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Cation Distribution of the Transparent Conductor and Spinel Oxide Solution Cd1+xIn2−xSnxO4

✍ Scribed by D. Ko; K.R. Poeppelmeier; D.R. Kammler; G.B. Gonzalez; T.O. Mason; D.L. Williamson; D.L. Young; T.J. Coutts

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
360 KB
Volume
163
Category
Article
ISSN
0022-4596

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✦ Synopsis

The cation distribution in the transparent conducting oxide Cd 1؉x In 2؊2x Sn x O 4 was investigated to determine if there is a correlation between structure and electronic properties. Combined Rietveld re5nements of neutron and X-ray di4raction data and 119 Sn MoK ssbauer spectroscopic analysis were used to show that the cation distribution changed with x (04x40.7) from a primarily normal spinel (x‫)0؍‬ to an increasingly random spinel. CdIn 2 O 4 quenched from 11753C has an inversion parameter of 0.31 (i.e., (Cd 0.69 In 0.31 ) tet (In 1.69 Cd 0.31 ) oct O 4 ). The inversion parameter decreases to 0.27 as the quench temperature is lowered from 11753C to 10003C. The decrease in inversion parameter with temperature correlates with an increase in optical gap from 3.0 eV to 3.3 eV for specimens prepared at 11753C and 8003C, respectively. We show that this is a consequence of an increase in the fundamental band gap.

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