DSpace Repository

Energetics Of Rare Earth Manganese Perovskites A1-xA'xMnO3 (A = La, Nd, Y and A' = Sr, La) Systems

Show simple item record

dc.contributor.author Laberty, Christel
dc.contributor.author Navrotsky, Alexandra
dc.contributor.author Rao, C N R
dc.contributor.author Alphonse, Pierre
dc.date.accessioned 2012-11-21T09:24:04Z
dc.date.available 2012-11-21T09:24:04Z
dc.date.issued 1999-07
dc.identifier 0022-4596 en_US
dc.identifier.citation Journal of Solid State Chemistry 145(1), 77-87 (1999) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1033
dc.description Restricted Access en_US
dc.description.abstract High temperature reaction calorimetry using molten lead berate as solvent has been used to study the thermochemistry of NdMnO3, YMnO3, La1-xSrxMnO3 (with 0 < x < 0.5), and Ln(0.5)Ca(0.5)MnO(3) (with Ln = La, Nd, Y), The enthalpies of formation of these multicomponent oxides from their binary constituents have been calculated from the measured enthalpy of drop solution, The energetic stability of the perovskite depends on the size of the A cation, The enthalpy of formation of YMnO3 (smallest A cation) is more endothermic than those of NdMnO3 and LaMnO3. The energetics of the perovskite also depends on the oxidation state of the B site's ions. In the La1-xSrxMnO3 system, the energetic stability of the structure increases with the Mn4+/Mn3+ ratio, The new values of the enthalpies of oxidations, with reliable standard entropies, were used to plot the phase stability diagram of the lanthanum-manganese-oxygen system in the temperature range 300-1100 K, The LaMnO3/MnO phase boundary evaluated in this study agrees with the one published by Atsumi et nl. calculated from thermogravimetric and conductivity measurements. (C) 1999 Academic Press. en_US
dc.description.uri http://dx.doi.org/10.1006/jssc.1999.8220 en_US
dc.language.iso en en_US
dc.publisher Academic Press Inc en_US
dc.rights © 1999 Academic Press Inc en_US
dc.subject High-Temperature Calorimetry en_US
dc.subject Giant Magnetoresistance en_US
dc.subject Electrical-Conductivity en_US
dc.subject Doped Lamno3 en_US
dc.subject Stability en_US
dc.subject Oxide en_US
dc.subject Directions en_US
dc.subject Behavior en_US
dc.subject Progress en_US
dc.subject Ca en_US
dc.title Energetics Of Rare Earth Manganese Perovskites A1-xA'xMnO3 (A = La, Nd, Y and A' = Sr, La) Systems en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Advanced Search

Browse

My Account