Diagram Example : 3D Chemical Potential Diagram 4a

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The chemical potential diagram for the La-Mn-Zr-O system at 1273 K.

1. Diagram : The three dimensional diagram in the μ(La)-μ(Mn)-μ(Zr) plot.
   
   
   
   
   
   
2. Description
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   • This is a three dimensional diagram for the four component La-Zr-Mn-O system at a constant temperature. Only three out of four components can be selected as diagram axes; here, μ(La)/RT, μ(Mn)/RT, and μ(Zr)/RT are used.
     
   • Stable phases are represented by polyhedrons in the three dimensional diagram. A whole diagram consists of those polyhedrons. In the diagram, polygons of respective polyhedrons are painted so that we cannot see inside the polyhedrons either under the polyhedrons.
     
   • By rotating the diagram, other polyhedrons can be seen.
     
   • To see the polyhedron below the visible polyhedrons, the option for changing the transparency of respective polyhedrons can be selected.
     
     See Example 4(b);
   
   
3. Details
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   1. [System] MALT

      Search Compounds

   Selection of <La,Mn,Zr,O> system
   
   
   2. Project > Chemical System
      
      <Chemical System> Dialog
      
      {Selection of Compounds} Page
      
      Selection by Default
      
      x Condensed phases
      o Respective Gaseous Species
      o Gaseous mixture
      
      
      
   3. Project > Specify Diagram
      
      <Diagram Specification> Dialog
      
      {Dimension Selection} Page
      
      Temperature
      
      x Fixed at 1273 K
      o Not Fixed
      
      Pressure
      
      x Fixed at 1 atm
      o Not Fixed
      
      {Diagram Selection}
      
      3D Chemical Potential Diagram
      Coordinates
      
      (La)
      (Mn)
      (Zr)
      
   4. Run > Calc
      
   5. Diagram > Color Details
      
   6. <Diagram Action Form> Dialog
      
      {Polygon Color} Page
      
      (1)Tricolors based on the Space Dimensions
      
      (LA) red
      (Mn) yellow
      (O) Blue
      
      ! No specification is made on (Zr) so that Zr phase will appear as white.