Field-induced ferromagnetism due to magneto-striction in 1-D helical chains
Field-induced ferromagnetism due to magneto-striction in 1-D helical chains
复制标题
一维螺旋链中磁致伸缩引起的场感应铁磁性
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
S. Saha
中科院分区：
文献类型：
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作者：
B. Shaw;M. Das;Anik Bhattacharyya;B. Ghosh;Susmita Roy;P. Mandal;K. Rissanen;S. Chattopadhyay;S. Saha
以两种N2 O非手性Schiff碱为供体，通过自发手性拆分法合成了两种具有端-端拟卤桥的铜（II）螺旋化合物[Cu（μ 1，3-N3）（L1）]n（1）和[Cu（μ 1，3-NCO）（L2）]n（2）.首次报道了一维纯手性螺旋[Cu（μ 1，3-N3）（L1）]n（1）中由磁致伸缩引起的场致铁磁有序.在低于5.5 K的温度下，在1 T的磁场下，由于晶格参数的收缩，铜中心的磁轨道之间的正交性显著增加，从而引起螺旋链中的长程铁磁有序。磁介电结果也表明在本复合物1中观察到的磁致伸缩效应。我们相信，这项研究将揭示一种新的方式调用长程铁磁有序的一维螺旋链。
Two homochiral copper(II) helices, [Cu(μ1,3-N3)(L1)]n (1) and [Cu(μ1,3-NCO)(L2)]n (2), with end-to-end pseudohalide bridges, were synthesized using two N2O donor achiral Schiff bases via spontaneous chiral resolution. Field-induced ferromagnetic ordering due to magneto-striction in homochiral 1-D helix [Cu(μ1,3-N3)(L1)]n (1) is reported for the first time. At temperatures below 5.5 K, under a magnetic field of 1 T, orthogonality between the magnetic orbitals of copper centres increases significantly due to the contraction of lattice parameters, giving rise to long-range ferromagnetic ordering in the helical chain. The magneto-dielectric results are also indicative of the observed magneto-striction effect in the present complex 1. We believe that this study will uncover a new way to invoke long-range ferromagnetic ordering in 1-D helical chains.
影响因子：
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作者：
Ardavan, A.;Blundell, S. J.
通讯作者：
Blundell, S. J.