In the paraelectric-antiferroelectric phase transition of antiferroelectrics NH_4H_2PO_4, the symmetry of crystalloid changes.
在反铁电晶体NH4H2PO4(ADP)顺电反铁电相变中,对称性所属点群也随之发生相应的改变。
The symmetry of the antiferroelectric phase of PbZrO3 was reinvestigated by the symmetry element analysis based on the projective figures given in the related literatures.
在参考文献给出的锆酸铅的反铁电相投影图的基础上,从生群元的角度重新研究了反铁电体锆酸铅的反铁电相的对称性,发现锆酸铅反铁电相的对称群应是P2/m,属于单斜晶系。
For the paraelectric-antiferroelectric phase transition at 180K,this paper draw the conclusion that the symmetry of antiferroelectric Cs3H(SeO_4)_2 is P_2(C_2).
在反铁电晶体 Cs_3H(SeO_4)_2顺电-反铁电相变中,对称性所属点群也随之发生相应的改变。
It is revealed that the correlation between the antiferromagnetic ordering and high damping twins also exists in other γ Mn based alloys.
根据反铁磁序引起的点阵畸变与磁长程序参量之间的关系 ,计算了 γMn- Cu合金顺磁→反铁磁转变引起的点阵畸变 ,并将计算值与实验数据进行了比较 。
By this method, we have revealed that the ferromagnetism of molecules is due to the cross-interaction between d orbitals of adjacent transition-metal ions, and that the antiferromagnetism is due to the parallel interactions.
已建立的一种研究过渡族元素化合物分子磁性的DSF理论方法 ,在一定范围内解决了分子磁性理论研究中如何将物理模型付诸理论计算的问题 ,由此研究了一些弱共价的同核分子体系 ,首次揭示了这些分子的铁磁性是起源于分子内相邻过渡金属离子轨道间的交叉相互作用 ,反铁磁性则源于平行相互作用 。
By employing the resistance and internal friction analysis, the critical points of Fe Mn Si based shape memory alloys were determined and the effect of fcc antiferromagnetism on thermal and stress induced martensitic transformation i.
采用电阻和内耗分析测定了不同Ｍｎ含量Ｆｅ－Ｍｎ－Ｓｉ基形状记忆合金（ＳＭＡ）相变临界点Ｍｓ、Ｍｆ、Ａｓ、Ａｆ和ＴＮ，研究了母相反铁磁状态时γε马氏体相变热诱发和应力诱发的影响。
Electric field-induced antiferroelectric-ferroelectric phase transitioh of PZST ceramics was studied.
研究了PZST陶瓷电场诱导反铁电－铁电相变,当外加电场大于相变临界参数EAFE-FE时，样品由反铁电态诱导为铁电态，并在宏观性能上产生突变：极化强度和纵向应变分别由零跃变到大约30μC／cm2和0。
The results show that ferroelectric-antiferroelectric and antiferroelectric-paraelectric phase transition with relaxor characteristic occur from room temperature to 500℃, leading to the two peaks of electric permittivity to temperature.
5TiO3陶瓷的介电和压电性能,发现陶瓷从室温到500℃温度范围的介电谱中存在两个介电峰,电滞回线显示第一个介电峰由铁电-反铁电相变引起的,温度继续升高,反铁电相由宏畴变为微畴,微畴向顺电相转变导致了第二个介电峰,该峰对应的相变为弥散型相变。