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Zum System Bi2O3 /Bi2Se3/BiCl3,I. Das Zustandsdiagramm Bi2O3/Bi2Se3/BiCl3/On the System Bi2O3/Bi2Se3/BiCl3, I. The Phase Diagram Bi2O3/Bi2Se3/BiCl3
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Abstract
The phase relations in the quaternary system Bi/Se/O/Cl have been studied and the existence of several new compounds in the pseudotemary area Bi2O3/Bi2Se3/BiCl3 has been established by solid state and chemical vapour transport reactions. The phase diagram is derived from X-ray powder diffraction and thermal analysisdata, and from measurements of the decomposition pressure behaviour. Three new quaternary phases with different compositions exist in the system: Bi4O4SeCl2, Bi10O12SeCl4 and Bi22O28SeCl8.
By estimation of the thermodynamic data of the quaternary phases it is possible to calculate complex heterogeneous chemical equilibria between all the binary, ternary and quaternary compounds of the phase diagram. As a result, we can describe thermodynamically the observed phase relations and the direction of thermal decomposition of the respective compounds.
Title: Zum System Bi2O3 /Bi2Se3/BiCl3,I. Das Zustandsdiagramm Bi2O3/Bi2Se3/BiCl3/On the System Bi2O3/Bi2Se3/BiCl3, I. The Phase Diagram Bi2O3/Bi2Se3/BiCl3
Description:
Abstract
The phase relations in the quaternary system Bi/Se/O/Cl have been studied and the existence of several new compounds in the pseudotemary area Bi2O3/Bi2Se3/BiCl3 has been established by solid state and chemical vapour transport reactions.
The phase diagram is derived from X-ray powder diffraction and thermal analysisdata, and from measurements of the decomposition pressure behaviour.
Three new quaternary phases with different compositions exist in the system: Bi4O4SeCl2, Bi10O12SeCl4 and Bi22O28SeCl8.
By estimation of the thermodynamic data of the quaternary phases it is possible to calculate complex heterogeneous chemical equilibria between all the binary, ternary and quaternary compounds of the phase diagram.
As a result, we can describe thermodynamically the observed phase relations and the direction of thermal decomposition of the respective compounds.
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