Low-field DC-magnetization study of Ho3+-doped Mn-Zn ferrite ferrofluid
2007 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, Vol. 311, no 1, 106-110 p.Article in journal (Refereed) Published
The physical and magnetic properties of magnetic nanoparticles are crucial for their effectiveness and reliability in biomedical applications. In this article, we report the synthesis of a stable Ho-substituted Mn-Zn ferrite ferrofluid and its physical and magnetic properties. Substitution by rare earth metal plays an important role in determining the magneto-crystalline anisotropy in 4f-3d intermetallic compounds. Ho3+ substitution not only enhanced the magnetic anisotropy but also produced strong spin frustration at low temperature. The field dependence of blocking temperature shows H-2/3 dependency in the entire range of field, i.e., 10-700 Oe, indicating the emergence of Ising spins characteristics in the present system.
Place, publisher, year, edition, pages
2007. Vol. 311, no 1, 106-110 p.
ferrofluid, magnetic nanoparticies, Ising spins, magnetic anisotropy, ferrites, nanoparticles, glass
IdentifiersURN: urn:nbn:se:kth:diva-16538DOI: 10.1016/j.jmmm.2006.10.1197ISI: 000245524800024ScopusID: 2-s2.0-33947187542OAI: oai:DiVA.org:kth-16538DiVA: diva2:334580
QC 201005252010-08-052010-08-05Bibliographically approved