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1)  diffusive ferroeceltric phase transition
弥散性铁电相变
2)  ferroelectric relaxor
铁电弥散性
1.
The curves of permittivity and dielectric loss as function of temperature were flat and showed ferroelectric relaxor characteristics when the content of donors exceed that of acceptors.
当施主杂质与受主杂质的比例较大时,介电常数-温度(-εT)曲线趋于平缓,BaTiO3陶瓷呈强铁电弥散性,介电损耗-温度(tan-δT)曲线趋于平滑,介电损耗-频率(tan-δf)曲线呈松弛极化损耗特性。
2.
The curves of permittivity and temperature give the ferroelectric relaxor characteristics,and the relationship between dielctric loss and temperature is expressed by diagonal line.
实验表明:Co2O3对BaTiO3陶瓷介电性能的影响跟La2O3、Nb2O5、Bi2(SiO3)3理论上产生的电荷n与Co2O3理论上产生的电荷p的比例有关:当n∶p>1时,介电常数-温度曲线趋于平缓,BaTiO3陶瓷呈现强铁电弥散性;介电损耗-温度曲线趋于平滑,随n∶p的减小,介电损耗总体减小;介电损耗-频率曲线呈现松弛极化损耗特性。
3)  diffuse phase transition
弥散性相变
1.
The diffuse phase transition of PZN-PZ-PT solid solution near the morphotropic boundary was reported.
报道了相界附近PZN-PZ-PT三元系固溶体弥散性相变,并研究了PbZrO3含量对PZN-PZ-PT固溶体弥散性相变的影响,发现随着PbZrO3含量的增加,PZN-PZ-PT固溶体弥散程度有所增加。
4)  diffuse phase transition
弥散相变
1.
Based on the analysis of dielectric properties, theincrease in the degree of diffuse phase transition.
研究表明,B位离子有序化是直接提高弥散相变(DPT)程度的原因,其机理是离子扩散,存在扩散平衡。
2.
Dielectric measur ment showed a diffuse phase transition.
用普通的电子陶瓷一次合成法,在903K下制备了高度有序的Pb(Li1/4Fe1/4W1/2)O3铁电体,介电特性测量显示该材料有明显的弥散相变现象。
3.
Transition tem- perature increases and the dielectric constant of the materials varies by increasing the content of Bi ions, which show a diffuse phase transition in them.
随Bi掺杂浓度增大,相变温度升高,介电常数变化,存在弥散相变。
5)  diffused phase transition
相变弥散
1.
30, the BaTi_ 1-x Sn_xO_3 ceramics experience a transformation from ferroelectrics with only diffused phase transition to relaxor ferroelectrics.
研究了它们的介电常数与温度和频率的关系,发现BaTi1-xSnxO3经历了一个由单纯相变弥散铁电体到弛豫型铁电体的变化过程。
6)  diffused phase transition
弥散相变
1.
The Li-Mo co-doped ceramics have the characteristics of ferroelectric-paraelectric diffused phase transition,and transform fro.
在–30~+130℃,Li-Mo共掺杂时,陶瓷具有铁电–顺电弥散相变特征,随着频率的增加,介电常数峰值对应的温度tm移向高温,陶瓷由正常铁电体变成弛豫铁电体。
2.
The relative permittivities as a function of temperatures at 10 kHz show obvious characteristic of diffused phase transition.
介温曲线(10kHz)显示该陶瓷体系具有明显的弥散相变特征。
补充资料:铁电感应相变
分子式:
CAS号:

性质:在一定温度下电场和压力等外界因素导致非铁电相向铁电相的转变。相变过程中伴有显著的体积变化和极化强度的变化,可用于制造机电换能和储能材料中,也可用于制作微位移仪等器件中。 

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