THREE DIMENSIONAL MULTI--PHASE FIELD SIMULATION OF GROWTH OF EUTECTIC CBr 4 --C 2 Cl 6 ALLOY II. Effect of Lamellar Spacing on Morphology Evolution: THREE DIMENSIONAL MULTI--PHASE FIELD SIMULATION OF GROWTH OF EUTECTIC CBr 4 --C 2 Cl 6 ALLOY II. Effect of Lamellar Spacing on Morphology Evolution