Field-induced ferromagnetism due to magneto-striction in 1-D helical chains

Shaw, Bikash Kumar ; Das, Mithun ; Bhattacharyya, Anik ; Ghosh, Biswa Nath ; Roy, Susmita ; Mandal, Prabhat ; Rissanen, Kari ; Chattopadhyay, Shouvik ; Saha, Shyamal Kumar (2016) Field-induced ferromagnetism due to magneto-striction in 1-D helical chains RSC Advances, 6 (27). pp. 22980-22988. ISSN 2046-2069

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Official URL: http://doi.org/10.1039/C5RA27040E

Related URL: http://dx.doi.org/10.1039/C5RA27040E

Abstract

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.

Item Type:Article
Source:Copyright of this article belongs to The Royal Society of Chemistry.
ID Code:122815
Deposited On:17 Aug 2021 04:17
Last Modified:17 Aug 2021 04:17

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