Published July 2003
| Version v1
Journal article
Relaxation effects in oxygen-conducting oxides on base of lanthanum gallate (La, Sr)(Ga, Me)O3, Me = Mg, Fe
Creators
- 1. Rossijskij Univ. Druzhby Narodov, Moscow (Russian Federation)
- 2. Nauchno-Issledovatel'skij Fiziko-Khimicheskij Inst. im. L.Ya. Karpova, Moscow (Russian Federation)
Description
The dielectric and electric conducting properties of the heterosubstituted perovskite-like solid solutions (La, Sr)(Ga, Me)O3, Me Mg, Fe are studied. The increase in the ceramics electric conductivity, conditioned by increase in the ion constituent at strengthening the nonstoichiometry by oxygen and electron constituent by the additional introduction of iron is observed by replacing the part of the lanthanum and gallium cations by strontium, magnesium and iron in the solid solutions on the basis of the lanthanum gallate. The ceramics relaxation behavior is identified; the applicability of the model of the vacational electron transfer for the dipole relaxation is established
Abstract (Russian)
Изучены диэлектрические и электропроводящие свойства гетерозамещенных перовскитоподобных твердых растворов (La, Sr)(Ga, Me)O3, Me = Mg, Fe. При замещении части катионов лантана и галлия стронцием, магнием и железом в твердых растворах на основе галлата лантана наблюдается повышение электропроводности керамики, обусловленное повышением ионной составляющей при усилении нестехиометрии по кислороду и электронной составляющей при дополнительном введении железа. Выявлено релаксационное поведение керамик, установлена применимость модели вакансионного электронного переноса для дипольной релаксацииAdditional details
Additional titles
- Original title (Russian)
- Релаксационные эффекты в кислородпроводящих оксидах на основе галлата лантана (Ла, Ср)(Га, Ме)О
Publishing Information
- Journal Title
- Izvestiya Akademii Nauk. Rossijskaya Akademiya Nauk. Seriya Fizicheskaya
- Journal Volume
- 67
- Journal Issue
- 7
- Journal Page Range
- p. 929-931
- ISSN
- 1026-3489
- CODEN
- IRAFEO
Conference
- Title
- OMA-2002 and ODPO-2002
- Original Conference Title
- Mezhdunarodnyj simpozium: fazovye prevrashcheniya v tverdykh rastvorakh i splavakh OMA-2002 i Mezhdunarodnyj simpozium: poryadok, besporyadok i svojstva oksidov ODPO-2002
- Dates
- Sep 2002
- Place
- Rostov-na-Donu (Russian Federation)
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 35093721
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CERAMICS; CHEMICAL COMPOSITION; ELECTRIC CONDUCTIVITY; GALLIUM OXIDES; IRON OXIDES; LANTHANUM OXIDES; MAGNESIUM OXIDES; PERMITTIVITY; RELAXATION; SOLID SOLUTIONS; STRONTIUM OXIDES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0400-1000 K
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; DIELECTRIC PROPERTIES; DISPERSIONS; ELECTRICAL PROPERTIES; GALLIUM COMPOUNDS; HOMOGENEOUS MIXTURES; IRON COMPOUNDS; LANTHANUM COMPOUNDS; MAGNESIUM COMPOUNDS; MIXTURES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SOLUTIONS; STRONTIUM COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 10 refs., 2 figs., 1 tab.