Development of oxygen ion conductors: One relevant tendency

authors	Marques, FMB; Kharton, VV
nationality	International
journal	IONICS
keywords	ELECTRICAL-PROPERTIES; TRANSPORT-PROPERTIES; SOLID ELECTROLYTES; ELECTRONIC TRANSPORT; LANTHANUM GALLATE; OXIDE; CONDUCTIVITY; GD; ND; FE
abstract	In the past ten years a series of developments in the field of materials with dominant oxygen ion conduction introduced a variety of new systems. The most relevant aspect is a shift from ionic transport mechanisms based on the motion of oxygen vacancies, to mechanisms based on mobile oxygen interstitials. In parallel, structures identified with dominant oxygen ion conduction moved from the relatively simple fluorite related ones to more complex materials, namely with the apatite-type and related structures, including coexistence of ionic and covalent bonding. This shift is understood as a major development, opening a wide range of alternative solutions for further exploitation.
publisher	INST IONICS
issn	0947-7047
year published	2005
volume	11
issue	5-6
beginning page	321
ending page	326
digital object identifier (doi)	10.1007/BF02430241
web of science category	Chemistry, Physical; Electrochemistry; Physics, Condensed Matter
subject category	Chemistry; Electrochemistry; Physics
unique article identifier	WOS:000234451500001