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КРИСТАЛЛОХИМИЧЕСКОЕ ОПИСАНИЕ ТЕРМИЧЕСКОГО РАСШИРЕНИЯ ПИРОВАНАДАТА МАРГАНЦА β-MN2V2O7

КРИСТАЛЛОХИМИЧЕСКОЕ ОПИСАНИЕ ТЕРМИЧЕСКОГО РАСШИРЕНИЯ ПИРОВАНАДАТА МАРГАНЦА β-MN2V2O7

Abstract

Методом высокотемпературной рентгенографии in situ исследовано термическое расширение моноклинной структуры β-Mn2V2O7 в интервале температур 100-700 °С. Показано, что расширение анизотропно и обусловлено сдвиговыми деформациями. При нагревании симметрия металл-кислородного полиэдра увеличивается, доля межполиэдрических пустот уменьшается, зигзагообразная форма марганец-кислородных колонок становится менее выраженной. Работа выполнена при поддержке гранта РФФИ № 07-03-01-063а.

Using method of the high-temperature radiography in situ the authors researched the thermal expansion of the monoclinic structure β-Mn2V2O7 within the temperature range of 100-700 °C. They prove that the expansion is aeolotropic and caused by deformation shearing. The balance metal-oxygen polyhedron increases when heating, the interpolyhedral spaces decreases, the zig-zag form of the manganese-oxygen systems is less significant.

Keywords

ПИРОВАНАДАТ МАРГАНЦА, ТЕРМИЧЕСКОЕ РАСШИРЕНИЕ, КОЭФФИЦИЕНТ ТЕРМИЧЕСКОГО РАСШИРЕНИЯ, ПОЛИЭДРИЧЕСКОЕ ПРЕДСТАВЛЕНИЕ КРИСТАЛЛИЧЕСКОЙ СТРУКТУРЫ, КООРДИНАЦИОННЫЙ ПОЛИЭДР, ТЕНЗОР ТЕРМИЧЕСКИХ ДЕФОРМАЦИЙ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold