| 1. | Semichemical method ( scm ) , which have characteristics of both chemical method ( cm ) and conventional milled oxides ( cmo ) , as a new preparation method of lead based relaxor ferroelectrics was proposed in this paper . some ceramics ( i . e 分析了scm法与cmo法、 cpm法在工艺上的差别,并提出了scm法制备pmn - pt和pfw粉体的固态反应机理。 |