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1)  PMN-PT relax ferroelectric
PMN-PT弛豫铁电体
2)  relaxor ferroelectrics
弛豫铁电体
1.
Structure and relaxation of relaxor ferroelectrics;
弛豫铁电体的弛豫性结构研究
2.
This paper outlines and reviews the theory and its progress in order disorder transformation for relaxor ferroelectrics , and also prospects the future of the theory briefl
简要介绍了弛豫铁电体的有序-无序转变理论的发展过程及新进展,并对该理论进行了评述。
3.
The activation energy \%Q \%of four typical relaxor ferroelectrics: disordered (\%S=0 35)\%Pb(Sc\-\{0 5\}Ta\-\{0 5\})O\-3 (PST) single crystal, disordered (\%S\%=0 40)PST ceramic, 0 85Pb(Zn\-\{1/3\}Nb\-\{2/3\})O\-3\|0 15BaTiO\-3(PZN\|BT) ceramic,and 0 93Pb(Mg.
从德拜弛豫理论出发 ,通过介电温度谱得到弛豫时间温度谱 ,由此计算弛豫铁电体的弛豫激活能Q和指数前因子τ0 。
3)  relaxor ferroelectric
弛豫铁电体
1.
Based on the crystal structures of NBT and the theories of the B-site-complex relaxor ferroelectrics,this paper also probes into the relaxor mechanism of the A-site-complex relaxor ferroelectrics,especially Na_(0.
5))TiO_3,NBT)是一种典型的 A 位复合钙钛矿结构弛豫铁电体,具有复杂的相变序列,介电温度峰呈现明显的弛豫性。
2.
Novel relaxor ferroelectric crystal (1-x)PbZn_ 1/3 Nb_ 2/3 O_ 3-x PbTiO_ 3 (PZNT)is a solid solution which is formed between relaxor ferroelectric crystal PbZn_ 1/3 Nb_ 2/3 O_ 3 (PZN) and general ferroelectric crystal PbTiO_ 3 (PT) in the range 0≤x≤0.
(1-x)PbZn1/3Nb2/3O3-xPbTi O3(PZNT)晶体是弛豫铁电体PbZn1/3Nb2/3O3(PZN)与普通铁电体PbTi O3(PT)在0≤x≤0。
3.
The dielectric response of PMN-PZN-PT relaxor ferroelectric ceramics was measured under various external fields.
结果表明:直流偏压场与交流测试场对弛豫铁电体的作用相反,增大偏压场导致介电常数的降低,而增大测试场则使介电常数升高。
4)  ferroelectric relaxor
弛豫铁电体
5)  relaxor ferroelectric single crystals
弛豫铁电单晶体
6)  relaxor ferroelectrics
弛豫型铁电体
1.
The development survey and research state of relaxor ferroelectrics are reviewed, the importance of nanometer structure to macroscopic properties is discussed, and research outlook and development trends in this field are indicated.
评述了弛豫型铁电体的发展概况及研完现状,讨论了其纳米结构特征对宏观性能的重要作用,并对研究前景和发展方向作了展望。
补充资料:铁电体
分子式:
CAS号:

性质:具有铁电性的物体。它具有电滞回线,存在居里点,并在居里点温度以上介电常数服从居里-外斯(curie-weiss)定律。具有压电效应和热释电效应。具有1,2mm,2,4,4mm,3,3m,6,6mm等晶体结构特征的物体可能具有铁电性。钛酸钡、钛酸铅、铌酸锂等许多单晶和陶瓷材料为典型的铁电体。铁电体广泛应用于电光储存显示、红外探测、水声超声换能、引燃引爆、探场、通信等许多场合。  铁电体相变  ferroelectric phase transition  铁电体从一种结构状态转变成另一种结构状态的现象。温度、电场、应力等外界条件均能诱导产生相变。相变可分为位移型相变、断键型相变,有序-无序相变等,也可分为一级、二极相变等类型。

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