In this paper, we mainly introduce a point of view of random fields, and a monoclinic phase found at near quasi - isotypic phase boundary in Pb(Zn1/3Nb2/3) O3 - PTiO3(PZN - PT) and Pb(Mg1/3Nb2/3)O3 - PbTiO3(PMN - PT) system.
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- 介绍了引起弛豫铁电相变的无规场观点；以及在Pb(Zn_1/3Nb_2/3)O_3-PTiO3(PZN-PT)和Pb(Mg_1/3Nb_2/3)O_3-PbTiO_3(PMN-PT)系统的准同型相界附近所发现的单斜相.
