NMR AND MAGNETIC SUSCEPTIBILITY MEASUREMENTS ON NOVEL CUPRATES Na5RbCu4(AsO4)Cl2 and Cu4Te5O12Cl4

Stern, R.; Heinmaa, I.; Kriisa, A.; Queen, W.; Hwu, S.J.; Papageorgiou, T.; Takagi, R.; Johnsson, M. (2007). NMR AND MAGNETIC SUSCEPTIBILITY MEASUREMENTS ON NOVEL CUPRATES Na5RbCu4(AsO4)Cl2 AND Cu4Te5O12Cl4. Proceedings of the XLI Annual Conference of the Finnish Physical Society: XLI Annual Conference of the Finnish Physical Society, March 15-17, 2007, Tallinn, Estonia. Ed. R.Vainio, J.Pomoell, & M.Louhivuori. 157. (Report Series in Physics; HU-P-267).
publitseeritud konverentsiettekanne
Stern, R.; Heinmaa, I.; Kriisa, A.; Queen, W.; Hwu, S.J.; Papageorgiou, T.; Takagi, R.; Johnsson, M.
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NMR AND MAGNETIC SUSCEPTIBILITY MEASUREMENTS ON NOVEL CUPRATES Na5RbCu4(AsO4)Cl2 AND Cu4Te5O12Cl4
Proceedings of the XLI Annual Conference of the Finnish Physical Society
R.Vainio, J.Pomoell, & M.Louhivuori
XLI Annual Conference of the Finnish Physical Society, March 15-17, 2007, Tallinn, Estonia
0355-5801
978-952-10-3236-3
Report Series in Physics
HU-P-267
2007
157
Ilmunud
5.2. Konverentsiteesid, mis ei kuulu valdkonda 5.1

Viited terviktekstile

Lisainfo

Two novel cuprates Na5RbCu4(AsO4)Cl2 and Cu4Te5O12Cl4 have been studied using NMR, magnetic susceptibility and specific heat measurements. Na5RbCu4(AsO4)Cl2 which contains layers of coupled Cu4O4 tetramers, orders in zero magnetic field antiferromagnetically via a second-order low-entropy phase transition at T_N = 15(1) K [1]. Measurements in Cu4Te5O12Cl4 (Cu-45124), composed of weakly coupled tetrahedral Cu clusters, evidence antiferromagnetic, frustrated correlations of the Cu spin moments and long range ordering with T_N = 13.6 K [2]. The magnetic behaviour of both cuprates will be discussed.