Subsolidus phase diagram of binary system in the perovskite type layer compounds (n-CnH2n+1NH3)(2)MnCl4

摘要

The thermotropic phase transitions in the perovskite type layer compound (n-C10H21NH3)(2)MnCl4 and (n-C14H29NH3)(2)MnCl4 were synthesized and, at the same time, a series of their mixtures C10Mn-C14Mn were prepared. The experimental binary phase diagram of C10Mn-C14Mn was established by differential thermal analysis (DTA), IR and X-ray diffraction. In the phase diagram new material (n-C10H21NH3)(n-C14H29NH3)MnCl4 and two eutectoid invariants were observed, two eutectic points temperatures are about 29.8 and 27.9A degrees C. Contrasting other similar system, there are three noticeable solid solution ranges (alpha, beta, gamma) at the left and right boundary and middle of the phase diagram.