Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1134/S0020168520060047

Ключевые слова: bismuth titanates, differential scanning calorimetry, high-temperature heat capacity, phase transition

Аннотация: The Bi12TiO20, Bi4Ti3O12, and Bi(2)Ti(4)O(11)bismuth titanates have been prepared by solid-state reactions, via multistep firing of stoichiometric mixtures of their constituent oxides in air at temperatures from 1003 to 1273 K (Bi12TiO20, to 1123 K). The heat capacity of polycrystalline samples of the synthesized compounds has beenПоказать полностьюdetermined by differential scanning calorimetry in the temperature range 330-1050 K. TheC(p)(T) curves of Bi(4)Ti(3)O(12)and Bi(2)Ti(4)O(11)show peaks at temperatures of 943 and 509 K, respectively, due to ferroelectric phase transitions. The experimental data have been used to evaluate the enthalpy increment, entropy change, and reduced Gibbs energy change of the bismuth titanates.

Журнал: INORGANIC MATERIALS

Выпуск журнала: Vol. 56, Is. 6

Номера страниц: 597-604

ISSN журнала: 00201685

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

• Denisova L.T. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 79, Krasnoyarsk 660041, Russia)
• Kargin Yu. F. (Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia)
• Chumilina L.G. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 79, Krasnoyarsk 660041, Russia)
• Belousova N.V. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 79, Krasnoyarsk 660041, Russia)
• Denisov V.M. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 79, Krasnoyarsk 660041, Russia)

• Web of Science Core Collection
• Scopus