Heat capacity rare earth elements

Antipcrovskites are known to form with rare earth elements, most notably the series ATTAIN (Af = C c. La. Nd, Pr, Sm [227], Those with the actual perovskite structure are oxynitrides LaWO(, N, 4 and NdWOu N, 4 [22.8] and have been the subject of some theoretical discussion [2291. The magnetic phase transitions can be explained by assuming that the Fermi level lies near a singularity in the electronic density of states [230], XANF.S and heat capacity measurements confirm these magnetic transitions [231, 232]. 

Virial heat-capacity coetScients (eq. 1) for selected non-rare-earth elements units have been omitted... 

Diakonov, I.I., Tagirov, B.R., and Ragnarsdottir, K.V. (1998) Standard thermodynamic properties and heat capacity equations for rare earth element hydroxides. I. La(OH)j(s) and Nd(OH)3(s). Comparison of thermochemical and solubility data. Radiochim. Acta, 81, 107-116. 

Schick s work includes the study of borides, carbides, nitrides, and oxides of some elements in Groups IIA, IIIB, IVA, IVB, VB, VIIB, and VIII as well as selected rare earths and actinides. As far as possible, the tables have been made compatible with the JANAF tables. Among the subjects treated are phase diagrams, heat capacities, enthalpies, entropies, enthalpies of phase transformation, formation, and reaction, melting temperatures, triple points, free energies of formation, vapour pressures, compositions of vapour species, ionization and appearance potentials, e.m.f. of cells, and enthalpies of solution and dilution. Volume 1 summarizes the techniques used to analyse data and cites the data analysed, and Volume 2 gives tables of values produced by this study. 

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