PREPARATION AND PROPERTIES OF THIN FILM MATERIALS WITH PEROVSKITE TYPE STRUCTURE (MIXED OXIDES ABO3)

1972 ◽  
Vol 33 (C2) ◽  
pp. C2-265-C2-267
Author(s):  
L. M. REIBER
2006 ◽  
Vol 71 (6) ◽  
pp. 685-693 ◽  
Author(s):  
H. Zhong ◽  
X.R. Zeng

A series of LaSrCo1-xMnxO4 (x=0.1, 0.3, 0.5) mixed oxides with a perovskite-type structure were successfully synthesized at fairly low temperatures in air by the decompositon of amorphous citric and ethylene diamine tetraacetic acid complexes. The obtained mixed oxides were characterized by means of XRD, BET, DTA, DTG, XPS analyses. The results show that the precursor can be completely decomposed into oxide at temperatures below 500?C. The decomposed species equisisted of LaSrCo1-xMnxO4 mixed oxides and formed a perovskite-type structure after calcination at 650?C for 6h. The influence of the calcination temperature on the particle size, the microstrain density and the specific surface area was much more significant than that of the calcination time. The intensity of the characteristic peak of Co2+ decresed with increasing manganese content in the LaSrCo1-xMnxO4 (x=0.1, 0.3, 0.5) mixed oxides. The binding energies of Mn 2p3/2 in the mixed oxides reveal that themanganese wasmainly in the Mn3+ state, which indicates that the influence of the calcination temperature and Mn content on the binding energies of Mn 2p3/2 was very weak.


1977 ◽  
Vol 81 (1) ◽  
pp. 287-293 ◽  
Author(s):  
A. A. Antipin ◽  
A. V. Vinokurov ◽  
M. P. Davydova ◽  
S. L. Korableva ◽  
A. L. Stolov ◽  
...  

2007 ◽  
Vol 1044 ◽  
Author(s):  
Anke Weidenkaff ◽  
Laura Bocher ◽  
Rosa Robert ◽  
Myriam Aguirre ◽  
Dmitry Logvinovich

AbstractTransition metal oxides and oxynitrides with perovskite-type structures are potential high temperature stable thermoelectric materials. With innovative soft chemistry synthesis procedures the crystallite size in complex oxide ceramics with perovskite-type structure can be decreased compared to classical synthesis routes and allows to lower the heat conductivity dramatically while a large power factor can be maintained at the same time. Submicron crystallites are beneficial to lower the lattice thermal conductivity without influencing the electron mobility.In this work, perovskite-type cobaltates, molybdates and manganates are studied. The influence of heterostructures and nanocrystalline domains in perovskite oxides/oxynitrides and the correlation with transport properties and Seebeck coefficient will be discussed.


1997 ◽  
Vol 204 (1) ◽  
pp. 345-355 ◽  
Author(s):  
V. V. Gagulin ◽  
S. K. Korchagina ◽  
Yu. A. Shevchuk ◽  
N. V. Fadeeva ◽  
V. V. Bogatko

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