Synthesis and High-Temperature Heat Capacity of Neodymium Titanate
Journal Article
·
· Inorganic Materials
- Russian Academy of Sciences, Baikov Institute of Metallurgy and Materials Science (Russian Federation)
- Siberian Federal University, Institute of Nonferrous Metals and Materials Science (Russian Federation)
- Russian Academy of Sciences, Institute of Metallurgy, Ural Branch (Russian Federation)
Neodymium dititanate, Nd{sub 2}Ti2O{sub 7} (monoclinic structure, sp. gr. P2{sub 1}), has been prepared by solid-state reaction in air at temperatures from 1673 to 1773 K using the Nd{sub 2}O{sub 3} and TiO{sub 2} oxides as starting materials. The high-temperature heat capacity of the resultant polycrystalline Nd{sub 2}Ti{sub 2}O{sub 7} samples has been determined by differential scanning calorimetry. The experimental C{sub p}(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.
- OSTI ID:
- 22787987
- Journal Information:
- Inorganic Materials, Journal Name: Inorganic Materials Journal Issue: 8 Vol. 54; ISSN INOMAF; ISSN 0020-1685
- Country of Publication:
- United States
- Language:
- English
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