1)  ED
反铁磁自旋链
1.
In this thesis, using ED (exact-diagonalization) and DMRG (density matrix renormalization group) methods,we study the effect of magnetic frustrations from next-nearest-neighbor bonds in a quasi-one-dimensional (QOD) antiferromagnetic Heisenberg (AFH) c.
本论文研究的是一种含阻挫的S =1/2准一维反铁磁自旋链但却具有亚铁磁性的海森堡模型,即在S =1/2一维海森堡反铁磁链的上方每间隔一个格点周期性地掺入一个自旋为1/2的侧自旋,并且考虑侧自旋与链上次近邻格点间的交换作用(即阻挫αJ)。
2)  quasi-one-dimensional Heisenberg antiferromagnetic chain
准一维反铁磁自旋链
1.
Using density-matrix renormalization group (DMRG) method, we studied the effect of magnetic frustrations due to next-nearest- neighbor bonds in a system of quasi-one-dimensional Heisenberg antiferromagnetic chain but with ferrimagnetic properties.
利用密度矩阵重整化群(DMRG)方法研究磁性阻挫对一种S=1/2准一维反铁磁自旋链但却具有亚铁磁性的Heisenberg系统基态的影响。
3)  antiferroelectric phase
反铁电相
1.
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。
2.
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。
3.
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。
4)  antiferroelectrics
反铁电体
5)  SDW AFM
SDW反铁磁
6)  antiferromagnetic ordering
反铁磁序
1.
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 。
参考词条
补充资料:自旋-自旋弛豫


自旋-自旋弛豫


  磁共振成像术语。又称T2弛豫或横向弛豫(transverse relaxation),指垂直于外磁场B0方向的磁化矢量的指数性衰减过程。磁共振成像时,对置于外磁场B0中的自旋系统施加90°射频脉冲,则自旋系统被激励,其净磁化矢量指向与外磁场B0垂直;射频脉冲终止后,被激励的质子与邻近的原子核之间发生相互作用,逐渐失去相位,净磁化矢量指向恢复与外磁场平行,该过程称自旋-自旋弛豫。自旋-自旋弛豫过程无能量交换。
  
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