Инд. авторы:	Drebushchak V.A.
Заглавие:	Discrepancy in the low-temperature heat capacity of MgFe2O 4 and related problems
Библ. ссылка:	Drebushchak V.A. Discrepancy in the low-temperature heat capacity of MgFe2O 4 and related problems // Journal of Thermal Analysis and Calorimetry. - 2014. - Vol.117. - Iss. 1. - P.443-446. - ISSN 1388-6150. - EISSN 1572-8943.
Внешние системы:	DOI: 10.1007/s10973-014-3678-6; SCOPUS: 2-s2.0-84904459169; WoS: 000338120100052;
Реферат:	eng: Evident discrepancy (by six times) between low-temperature heat capacities of two different samples of magnesioferrite (MgFe2O4) with a different thermal history is analogous to that (by four times) for franklinite (ZnFe2O4) found 50 years ago. The reason is supposed to be in the different magnetic ordering caused by different cation ordering after quenching-annealing. Magnetic nature of the discrepancy in low-temperature thermodynamic functions of minerals with variable cation ordering is out of quantitative consideration so far. This effect can also be found in all oxide phases of magnetic cations with the inversion parameter. © 2014 Akadémiai Kiadó, Budapest, Hungary.
Ключевые слова:	Cation ordering; Heat capacity; Magnetism; Quenching; Spinel; Annealing; Magnetism; Quenching; Specific heat; Temperature; Positive ions; Thermodynamic functions; Spinel; Magnesioferrite; Low temperatures; Low temperature heat capacities; Inversion parameters; Different thermal history; Annealing; Cation ordering;
Издано:	2014
Физ. характеристика:	с.443-446