Naslov
Intriguing magnetic dynamics of ruthenocuprate Ru1222

Autori
Živković, Ivica ; Hirai, Yoshi ; Frazer, B.H., Prester, Mladen ; Drobac, Đuro ; Ariosa, Daniel ; Berger, Helmuth ; Pavuna, Davor ; Margaritondo, Giorgio ; Felner, Israel ; Onellion, Marshall

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
47th Annual Conference on Magnetism and Magnetic Materials

Mjesto i datum
Tampa (FL), Sjedinjene Američke Države, 11.11.2002. - 15.11.2002

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
superconductivity; magnetism; magnetic order; antferromagnetism; susceptibility

Sažetak
A low field magnetism of the Ru1222 ruthenocuprate has been studied by the use of high resolution ac susceptibility technique. Both the magnetic ordering and magnetic dynamics in the ordered phase are remarkably more complex in Ru1222 than in related ruthenocuprate Ru1212. In particular, we observed phenomena of pronounced susceptibility switching followed by logarithmic time decays and intriguing inverted hysteresis, usually characterizing magnetic multilayers. While the magnetism of the Ru1222 ruthenocuprate generally agrees with the ideas of weak ferromagnetism the particular observations are interpreted within a model of specific, weak AF, coupling between the two adjacent Ru planes. On basis of our results we conclude that the Ru1222ruthenocuprate represents a rare example of intrinsic -naturally grown- magnetic multilayer.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA