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Low-field DC-magnetization study of Ho3+-doped Mn-Zn ferrite ferrofluid
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Engineering Material Physics.ORCID iD: 0000-0003-4889-4210
2007 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 311, no 1, p. 106-110Article in journal (Refereed) Published
Abstract [en]

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, p. 106-110
Keyword [en]
ferrofluid, magnetic nanoparticies, Ising spins, magnetic anisotropy, ferrites, nanoparticles, glass
Identifiers
URN: urn:nbn:se:kth:diva-16538DOI: 10.1016/j.jmmm.2006.10.1197ISI: 000245524800024Scopus ID: 2-s2.0-33947187542OAI: oai:DiVA.org:kth-16538DiVA, id: diva2:334580
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Belova, Lyubov M.

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