The major phase of the system is BZNN of the cubic perovskite structure,accompanied with a little of second phases,as Ba_5Nb_4O_(15),BaNb_2O_6 and so on.

• 系统的主晶相为立方钙钛矿结构的BZNN,并有少量第二相如B a5N b4O15,B aN b2O6等。