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- Title
Lattice Enthalpies of Lanthanide Orthoferrites LnFeO<sub>3</sub>.
- Authors
Petrov, Dimitar
- Abstract
Lattice enthalpies ΔLHӨ of lanthanide orthoferrites, LnFeO3 have been determined by the Born-Haber cycle and compared with those calculated by an empirical equation. Enthalpies of formation of LnFeO3 from two different sources have been employed: from oxides (Ln2O3, Fe2O3), for 12 LnFeO3, and from elements, for 8 LnFeO3, but the differences in ΔLHӨ are very small. The Born-Haber cycle in both routes results in close values of ΔLHӨ to those obtained by the empirical equation of Glasser and Jenkins. A correspondence in dimension and magnitude has been found between the partial derivative of the lattice enthalpies to the molar volumes and an upper limit of the shear moduli of the lanthanide orthoferrites.
- Subjects
ENTHALPY; RARE earth metals; ORTHOFERRITES; EMPIRICAL research; MODULUS of rigidity
- Publication
Acta Chimica Slovenica, 2015, Vol 62, Issue 3, p716
- ISSN
1318-0207
- Publication type
Article
- DOI
10.17344/acsi.2014.1235