Fitokhimiya Research and Production Center Joint Stock Company

Karagandy, Kazakhstan

Fitokhimiya Research and Production Center Joint Stock Company

Karagandy, Kazakhstan
SEARCH FILTERS
Time filter
Source Type

Kasenov B.K.,Fitokhimiya Research and Production Center Joint Stock Company | Edil'Baeva S.T.,Fitokhimiya Research and Production Center Joint Stock Company | Kasenova S.B.,Fitokhimiya Research and Production Center Joint Stock Company | Sagintaeva Z.I.,Fitokhimiya Research and Production Center Joint Stock Company | And 3 more authors.
High Temperature | Year: 2010

High-temperature synthesis according to ceramic technology is used to prepare new manganites NdMe3Sr3Mn4O 12 (Me-Li, Na, K). The X-ray powder method is used to find that the compounds crystallize in tetragonal syngony, and the parameters of their crystal lattices are determined. The method of dynamic calorimetry is used in the range from 298.15 to 673 K for determining the heat capacity of manganites; in so doing, the presence of second-order phase transitions is revealed. In view of phase transitions, equations are derived which describe the dependence C p ° ∼ f(T) in the range from 298.15 to 673 K. The temperature dependences of permittivity and electrical resistance of manganites are investigated at 303-503 K; these dependences likewise confirm the presence of second-order phase transitions. © 2010 Pleiades Publishing, Ltd.

Loading Fitokhimiya Research and Production Center Joint Stock Company collaborators
Loading Fitokhimiya Research and Production Center Joint Stock Company collaborators