Non-uniform electron conduction in weakly ordered SrFe_1−xMo_xO_3−δ

Abstract

An accelerative increase of the effective electron mobility with Mo content in SrFe1−xMoxO3−δ is due to progressive formation of the Sr2FeMoO6 ordered areas with high electron mobility.

Impact of A-Site Cation Deficiency on Charge Transport in La0.5−xSr0.5FeO3−δ

“…There is also an assumption that oxygen vacancies make several nearby Fe 3+ ions inaccessible for the hole jump, so an increase in the oxygen content involves more iron ions in the hole transport and enhances mobility [ 35 ]. Usually, the mobility of p-type carriers can be approximated well by linear dependence on the concentration of carriers (or oxygen content) [ 41 , 42 ]. In some cases, however, the best description needs the use of a second degree polynomial [ 43 , 44 ].…”

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

“…Other examples are LaFeO 3 -, SrFeO 3 -, and BaFeO 3 -based complex oxides, which display meaningful n-type conductivity values coming from the reduction of Fe 3+ -ions: 83–85 …”

Unusual enhancement of high-temperature electronic transport in PrBaCo2O6−δ under Ga doping: reasons and consequences

“…11 The electrical conductivity σ and the Seebeck coefficient α of PBCG as a function of both temperature T and the oxygen partial pressure P O 2 were measured simultaneously on rectangular cut ceramic samples using a home-made experimental setup that is described elsewhere. 12 The temperature and P O 2 ranges were selected to be 973–1173 K and 0.8–10 −5 atm, respectively. These intervals were chosen to cover the wide non-stoichiometry alterations previously observed in PBCG, 9 thus enabling all contributions to the electrical conductivity to be determined with minimal errors.…”