scholarly journals Structural Characterization and Magnetic Behavior of Uranium Compound U2Pt6Al15

Author(s):  
Yoshinori Haga ◽  
Takashi Sugai ◽  
Yuji Matsumoto ◽  
Etsuji Yamamoto
ChemInform ◽  
2005 ◽  
Vol 36 (9) ◽  
Author(s):  
I. Alvarenz-Serrano ◽  
C. Pico ◽  
M. L. Veiga

2009 ◽  
Vol 23 (02) ◽  
pp. 137-146 ◽  
Author(s):  
L. T. CORREDOR ◽  
D. A. LANDÍNEZ TÉLLEZ ◽  
M. C. REYES O. ◽  
J. ROA-ROJAS ◽  
A. R. JURELO ◽  
...  

In this work we report the synthesis of RuSr 2 GdCu 2 O 8/ La 0.67 Sr 0.33 MnO 3 superconducting-magnetic composites with 50 vol.% of both RuSr 2 GdCu 2 O 8 and La 0.67 Sr 0.33 MnO 3 compounds. Structural characterization was performed by X-ray diffraction, which permitted us to establish the absence of other crystallographic phases and the non-reactive character of the compounds into the composite. Scanning electron microscopy showed the sub-micrometric size of the grains. Energy dispersive X-ray experiments confirmed chemical stability between RuSr 2 GdCu 2 O 8 and La 0.67 Sr 0.33 MnO 3 compounds in the composites. Resistivity measurements provided evidence of superconducting transition for the RuSr 2 GdCu 2 O 8 material, with TSC=39.2 K. Results of magnetization as a function of temperature corroborated the superconducting transition and showed the expected antiferromagnetic character of the Ru perovskite, with a Néel temperature TN=132.7 K. Systematic measurements of applied magnetic field up to 5 kOe were performed at these temperature regimes: TN < T < TC (with TC being the Curie temperature of the La 0.67 Sr 0.33 MnO 3 compound); TSC < T < TN; and T < TSC. Our results reveal the ferromagnetic character of the composites at the temperature regime TN < T < TC. The exchange bias effect was observed for weak applied fields (H < 1.5 kOe) at temperatures between TSC < T < TN. At the superconducting regime (T < TSC) weaker exchange bias is observed for low magnetic fields (H < 1 kOe). For strong magnetic fields (H > 2 kOe) the ferromagnetic character of the system is recovered.


1999 ◽  
Vol 38 (25) ◽  
pp. 5716-5723 ◽  
Author(s):  
Morsy A. M. Abu-Youssef ◽  
Albert Escuer ◽  
Dante Gatteschi ◽  
Mohamed A. S. Goher ◽  
Franz A. Mautner ◽  
...  

2007 ◽  
Vol 180 (4) ◽  
pp. 1209-1217 ◽  
Author(s):  
A.D. Lozano-Gorrín ◽  
J.E. Greedan ◽  
P. Núñez ◽  
C. González-Silgo ◽  
G.A. Botton ◽  
...  

CrystEngComm ◽  
2011 ◽  
Vol 13 (1) ◽  
pp. 118-123 ◽  
Author(s):  
Chih-Chieh Wang ◽  
Fang-Chen Liu ◽  
Chih-Kai Chiu ◽  
You Song ◽  
Shih-Chi Wang ◽  
...  

2008 ◽  
Vol 205 (8) ◽  
pp. 1817-1820 ◽  
Author(s):  
N. C. Popa ◽  
A. Siblini ◽  
J. J. Rousseau ◽  
M.-F. Blanc-Mignon ◽  
J. P. Chatelon

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