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Preparation and Physical Properties of the Delafossite-Type Solid Solutions AgCoxNi1-xO2(0 ≤ x ≤ 0.5)

✍ Scribed by Y.J. Shin; J.P. Doumerc; P. Dordor; M. Pouchard; P. Hagenmuller

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
252 KB
Volume
107
Category
Article
ISSN
0022-4596

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✦ Synopsis

Delafossite-type (\mathrm{AgCO}{x} \mathrm{Ni}{1-x} \mathrm{O}{2}(0 \leq x \leq 0.5)) solid solutions have been prepared by an exchange reaction of the corresponding (\mathrm{Na}) compounds with molten (\mathrm{AgNO}{3}). Magnetic and electrical properties have been investigated. The metal-insulator transition observed as (x) increases has been ascribed to a vanishing of the (4 d(\mathrm{Ag})-\sigma^{*}(\mathrm{Ni}-\mathrm{O})) band overlapping previously invoked for describing (\mathrm{AgNiO}_{2}) as a semimetal. 01993 Academic Press, Inc.

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