Synthesis and High-Temperature Heat Capacity of Neodymium Titanate


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Neodymium dititanate, Nd2Ti2O7 (monoclinic structure, sp. gr. P21), has been prepared by solid-state reaction in air at temperatures from 1673 to 1773 K using the Nd2O3 and TiO2 oxides as starting materials. The high-temperature heat capacity of the resultant polycrystalline Nd2Ti2O7 samples has been determined by differential scanning calorimetry. The experimental Cp(T) data have been used to evaluate the thermodynamic functions of neodymium dititanate (enthalpy increment H°(T)–H°(320 K), entropy change S°(T)–S°(320 K), and reduced Gibbs energy Ф°(T)) in the temperature range 320–1053 K.

Sobre autores

L. Denisova

Institute of Nonferrous Metals and Materials Science

Autor responsável pela correspondência
Email: antluba@mail.ru
Rússia, Svobodnyi pr. 79, Krasnoyarsk, 660041

Yu. Kargin

Baikov Institute of Metallurgy and Materials Science

Email: antluba@mail.ru
Rússia, Leninskii pr. 49, Moscow, 119991

L. Chumilina

Institute of Nonferrous Metals and Materials Science

Email: antluba@mail.ru
Rússia, Svobodnyi pr. 79, Krasnoyarsk, 660041

V. Ryabov

Institute of Metallurgy, Ural Branch

Email: antluba@mail.ru
Rússia, ul. Amundsena 101, Yekaterinburg, 620016

N. Belousova

Institute of Nonferrous Metals and Materials Science

Email: antluba@mail.ru
Rússia, Svobodnyi pr. 79, Krasnoyarsk, 660041

V. Denisov

Institute of Nonferrous Metals and Materials Science

Email: antluba@mail.ru
Rússia, Svobodnyi pr. 79, Krasnoyarsk, 660041

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