Static magnetic response of clusters in Co_{0.2}Zn_{0.8}Fe_{1.95}Ho_{0.05}O_{4} spinel oxide

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dc.creatorBhowmik, R. N.
dc.creatorRanganathan, R.
dc.creatorNagarajan, R.
dc.date2003-06-25
dc.date.accessioned2026-07-07T02:52:03Z
dc.date.available2026-07-07T02:52:03Z
dc.descriptionEarlier investigation of Co_{0.2}Zn_{0.8}Fe_{1.95}Ho_{0.05}O_{4} spinel has shown the existence of "super-ferromagnetic " clusters containing Fe^{3+} and Ho^{3+} ions along with small size clusters of Fe^{3+} ions (Bhowmik et al, J. Magn. Magn. Mater. {247}, 83 (2002)). Here, We report the static magnetic response of these clusters. The experimental data suggests some interesting magnetic features, such as, enhancement of magnetization; re-entrant magnetic transitions with paramagnetic to ferromagnetic state below 225 K and ferromagnetic to spin glass state below 120 K; appearance of field induced ferromagnetism. We also observe an unusual maximum in the thermoremanent magnetization (TRM) vs temperature data. Our measurements suggest that this unusuality in TRM is related to the blocking of "super-ferromagnetic" clusters ,out of the ferromagnetic state, along their local anisotropy axis.
dc.descriptionLaTex file and 9 ps Figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0306653
dc.identifierhttp://arxiv.org/abs/cond-mat/0306653
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21695
dc.subjectSoft Condensed Matter
dc.subjectDisordered Systems and Neural Networks
dc.titleStatic magnetic response of clusters in Co_{0.2}Zn_{0.8}Fe_{1.95}Ho_{0.05}O_{4} spinel oxide
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