LOW-TEMPERATURE HEAT CAPACITY OF PENTLANDITE

dc.contributor.author	Berezovskii G.A.
dc.contributor.author	Drebushchak V.A.
dc.contributor.author	Kravchenko T.A.
dc.date.accessioned	2021-02-14T10:44:30Z
dc.date.available	2021-02-14T10:44:30Z
dc.date.issued	2001
dc.identifier	https://elibrary.ru/item.asp?id=13364983
dc.identifier.citation	American Mineralogist, 2001, 86, 10, 1312-1313
dc.identifier.issn	0003-004X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/24966
dc.description.abstract	The heat capacity of synthetic pentlandite Fe4.60Ni4.54S8 was measured over the temperature range 6-306 K. Experimental values of Cp (T) indicate that there are no phase transitions. The thermodynamic functions Cp (T), H(T)-H(O), and S(T)-S(O) were evaluated: Cp (298.15)=442.7 J/mol·K. S(298.15)-S(O)=474.9 J/mol·K, and H(298.15)-H(O)=76280 J/mol (molar mass: 779.877 g). Below 10 K, the heat capacity of pentlandite fits the regression Cp(T)=aT+bT3. The linear term is typical of metals and known as an electronic contribution to the heat capacity. This agrees with the hypothesis that there is metal bonding among cations in tetrahedral sites.
dc.title	LOW-TEMPERATURE HEAT CAPACITY OF PENTLANDITE
dc.type	Статья

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