Furthermore , we try to fabricate complex perovskite structure pmn - pt by the conventional mixed oxide , liquid phase inclosure technique and microwave calcinations method 同时也对直接固相合成法、液相包裹体法及微波合成工艺进行了相应的比较和探讨。
The results show that mg - salts are effective for the formation of perovskite phase , especially mg ( no3 ) 2 and / or mg ( ac ) 2 instead of mgo in a molecular grade 对于pfw陶瓷， scm法是在较低的温度下，由pbwo _ 4直接与“新生态”崔斌西北工业大学博士论文的fe 。 0 。
7 ) by using in - situ hydrothermal synthesis and sol - gel complex method a stoichiometry tetragonal perovskite pbti03 ceramic film was successfully prepared on tini substrate 通过采用原位水热solgel复合合成法，在tint基体上成功制备了结构较为致密的pbtio 。
More recently , the perovskite manganite compounds , a1 - xbxmno3 have received much attention because of their gigantic magnetoresistance ( gmr ) and charge ordering properties 近几年来，这类钙钛矿型结构的氧化物材料因为其具有的巨磁电阻效应受到了更多的关注。
The main work is as the follows : 1 . perovskite batio3 thin films are grown on sio2 / si ( 111 ) substrates by sol - gel process and rapid thermal annealing ( rta ) technique 主要工作如下: 1 .用溶胶-凝胶法和快速退火工艺在sio2 / si ( 111 )基片上生长了钙钛矿结构batio3薄膜。
The crystal structure of the quantum paraelectrics is mainly perovskite type , similar to most of the ferroelectrics , and external factors , e . g . impurity doping , may induce ferroelectric phase 量子顺电体的结构和铁电体很相似，大部分属于abo _ 3的钙钛矿结构，所以应力或掺杂等易使之成为铁电体。
In this paper , nanometer la1 - xsrxmno3 catalyst of perovskite type with high property was prepared by sol - gel method , and the preparation and properties of the material were studied as well 本文用溶胶凝胶法制备了高性能纳米la _ ( 1 - x ) sr _ xmno _ 3钙钛矿型氧化物催化剂，对材料制备技术及应用性能进行了研究。
In the systems of pnn - pt , the content of perovskite phase increased rapidly from 800 c to 850 c . the formation of perovskite phase for pnn - pt was more effective than that of pmn - pt system prepared by scm 。 ；最后再转化为钙钛矿结构的pfw 。在scm法中， pfw和州n干t的反应机理的区别是，前者形成的中间相为pbfewo 。
For two hours show almost pure perovskite phase . the ceramic pellets have straw yellow luster at the edge of the ceramic pellets . the mechanic intensity of the ceramic pellets is rather high 经xrd测量，发现经过1100 2h处理的片子几乎为全钙钛矿相，而且机械强度高、陶瓷片边缘有淡黄色光泽、机械强度较高。
