Antiferromagnetic ordering in a novel five-connected 3D polymer {Cu2(2,5-Me2pyz)[N(CN)2]4}n (2,5-Me2pyz2,5-dimethylpyrazine)Electronic supplementary information (ESI) available: plot of the temperature dependence of the ac susceptibility (Fig. S1). See http://www.rsc.org/suppdata/nj/b1/b111012h/

2002 ◽  
Vol 26 (5) ◽  
pp. 523-525 ◽  
Author(s):  
Wai-Fun Yeung ◽  
Song Gao ◽  
Wing-Tak Wong ◽  
Tai-Chu Lau
2000 ◽  
Vol 215-216 ◽  
pp. 260-263 ◽  
Author(s):  
H Sassik ◽  
M Schönhart ◽  
R Grössinger ◽  
R Sato Turtelli ◽  
A Kottar

1997 ◽  
Vol 282-287 ◽  
pp. 1991-1992
Author(s):  
P.N. Mikheenko ◽  
J. Horvat ◽  
M. Ionescu ◽  
S.X. Dou

1997 ◽  
Vol 11 (07) ◽  
pp. 323-331 ◽  
Author(s):  
V. P. S. Awana ◽  
Rajvir Singh ◽  
D. A. Landinez Tellez ◽  
J. M. Ferreira ◽  
J. Albino Aguiar ◽  
...  

We present the results of superconductivity, normal state magnetic susceptibility and heat capacity measurements on the tetragonal CaLa 1-x Pr x BaCu 3 O 7 compound. Ac susceptibility measurements show that the transition temperature T c of the unsubstituted sample decreases with an increase in the Pr concentration. Normal state dc magnetic susceptibility measurements performed in an applied field of 0.5 T show a Curie–Weiss behaviour in terms of the paramagnetic moment of Pr. The effective paramagnetic moment of Pr appears to be intermediate between those of the free Pr 3+ and Pr 4+ ions. For the nonsuperconducting samples i.e., x = 0.70 and 1.0, we observe an antiferromagnetic ordering temperature T N of nearly 4 K and 8 K respectively. The X-ray diffraction results show that the CaPrBaCu 3 O 7 compound is free from other phases, having a minor (less than 8%, in terms of peak intensity) impurity phase. The lower T N (8 K) of PrBaCaCu 3 O 7 as compared to the known antiferromagnetic ordering temperature of 17 K for PrBa 2 Cu 3 O 7 indicates a less deleterious effect of Pr in the present case.


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