Low temperature thermal expansion coefficients of members of the solid solution gehlenite (ge)-åkermanite (åk) were measured by synchrotron radiation X-Ray powder diffraction. The linear thermal expansion coefficient is maximum for a composition with about 50 % content of åk. In åk-rich compositions an incommensurate modulated structure is present. The ge-åk solid solution shows a non-ideal behaviour, with negative excess volume near the ge end-member.
Low temperature SR-XRPD study of akermanite-gehlenite solid solution
ARTIOLI, GILBERTO
2006
Abstract
Low temperature thermal expansion coefficients of members of the solid solution gehlenite (ge)-åkermanite (åk) were measured by synchrotron radiation X-Ray powder diffraction. The linear thermal expansion coefficient is maximum for a composition with about 50 % content of åk. In åk-rich compositions an incommensurate modulated structure is present. The ge-åk solid solution shows a non-ideal behaviour, with negative excess volume near the ge end-member.File in questo prodotto:
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