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RuthenocupratesRuSr2(Eu,Ce)2Cu2O10−y: Intrinsic magnetic multilayers

I. Živković, Y. Hirai, B. H. Frazer, M. Prester, D. Drobac, D. Ariosa, H. Berger, D. Pavuna, G. Margaritondo, I. Felner, M. Onellion
2002 Physical Review B (Condensed Matter)  

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2001 pre-print arXiv:cond-mat/0110181v1 fatcat:phdxpvag6vcj7ciej2maosq7ce
We report ac susceptibility data on RuSr_2(Eu,Ce)_2Cu_2O_(10-y) (Ru-1222, Ce content x=0.5 and 1.0), RuSr_2GdCu_2O_8 (Ru-1212) and SrRuO_3. Both Ru-1222 (x=0.5, 1.0) sample types exhibit unexpected magnetic dynamics in low magnetic fields: logarithmic time relaxation, switching behavior, and 'inverted' hysteresis loops. Neither Ru-1212 nor SrRuO_3 exhibit such magnetic dynamics. The results are interpreted as evidence of the complex magnetic order in Ru-1222. We propose a specific multilayer
more » ... el to explain the data, and note that superconductivity in the ruthenocuprate is compatible with both the presence and absence of the magnetic dynamics.
doi:10.1103/physrevb.65.144420 fatcat:7iqcydogprhg7fn4djhrqldylu
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I. Živković, Y. Hirai, B. H. Frazer, M. Prester, D. Drobac, D. Ariosa, H. Berger, D. Pavuna, G. Margaritondo, I. Felner, M. Onellion. "RuthenocupratesRuSr2(Eu,Ce)2Cu2O10−y: Intrinsic magnetic multilayers." Physical Review B (Condensed Matter) 65.14 (2002)