Preparation and characterization of oxidized graphene for actinides and rare earth elements removal in nitric acid solutions from nuclear wastes

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Formation of rhabdophane-structured lanthanum orthophosphate nanoparticles in an impinging-jets microreactor and rheological properties of sols based on them

Some practical aspects of heat capacity determination by differential scanning calorimetry

The isobaric heat capacity of samarium orthotantalate M-SmTaO4 was measured by adiabatic and differential scanning calorimetry in the range 17–1115 K. Smoothed heat capacity values were used to calculate thermodynamic functions (entropy, enthalpy increment, and reduced Gibbs free energy) with the contribution from low-temperature (<17 K) magnetic transformations being ignored.

Thermodynamic Properties of Monoclinic Samarium Orthotantalate M -SmTaO 4

Thermal expansion and thermodynamic properties of M′-YbTaO4 ceramics

Thermodynamic properties and phase transition of monoclinic terbium orthophosphate

Thermodynamics of PrPO4 whiskers

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Synthesis and study of anhydrous lanthanide orthophosphate (Ln = La, Pr, Nd, Sm) nanowhiskers

The influence of structural phase transitions, features of electronic structure, and magnetic transformation on the temperature dependence of the heat capacity of LnAO4 (A = P, V, Nb) compounds has been considered. It has been shown that the sum of the contributions to the thermodynamic functions due to the phase transition can vary depending on the lanthanide ion. The contribution to the standard entropy caused by low-temperature phase transitions is the most significant.

Phase transitions and thermodynamic properties of lanthanide compounds LnAO4 (A = P, V, Nb)

The heat capacity of monazite-type LaPO4 and PrPO4 nanocrystalline whiskers, with a diameter of 30 to 45 nm and length 1–1.5 μm, was measured by adiabatic and relaxation calorimetry. The essential difference in the heat capacity of nanowhiskers and bulk particle substances was observed only at a temperature above 100 K. The research revealed significant restrictions in the use of an adiabatic method (that uses helium as a heat-transfer gas) for measurements of nanoscale substances’ heat capacity, due to the considerable sorption of helium.

K. I. Bryukhanova

Papers

Thermodynamic properties and phase transition of monoclinic terbium orthophosphate

Thermodynamics of PrPO4 whiskers

Synthesis and study of anhydrous lanthanide orthophosphate (Ln = La, Pr, Nd, Sm) nanowhiskers

Phase transitions and thermodynamic properties of lanthanide compounds LnAO4 (A = P, V, Nb)

The heat capacity of LaPO 4 and PrPO 4 nanowhiskers