Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamic properties of yttrium cuprate   The standard formation enthalpy and enthalpy from binary oxide of yttrium
cuprate have been determined by solution calorimetry combining the solution
enthalpies of Y2Cu2O5 and Y2O3 + 2CuO mixture in 6 M HCl at 323.15 K and
literature data. The heat capacity of Y2Cu2O5 has been measured by adiabatic
calorimetry from 8 up to 303 K. Smoothed values of heat capacities, entropies
and enthalpies were calculated on the basis of experimental data. The
thermodynamic functions (heat capacity, entropy and enthalpy) at 298.15 K have
been calculated. On the basis of obtained data it has been obtained that
above-mentioned complex oxide is thermodynamically unstable with respect to
their decomposition into binary oxides at room temperatures.

18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas