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Multiscale magnetization in cobalt-doped ferrite nanocubes

. 2022 Dec 01 ; 55 (Pt 6) : 1622-1630. [epub] 20221201

Status PubMed-not-MEDLINE Language English Country United States Media electronic-ecollection

Document type Journal Article

Links

PubMed 36570661
PubMed Central PMC9721329
DOI 10.1107/s1600576722010287
PII: S1600576722010287
Knihovny.cz E-resources

The magnetization of cobalt ferrite nanocubes of similar size, but with varying Co/Fe ratio, is extensively characterized on atomistic and nanoscopic length scales. Combination of X-ray diffraction, Mössbauer spectroscopy, magnetization measurements and polarized small-angle neutron scattering (SANS) reveals that a lower amount of cobalt leads to an enhanced magnetization. At the same time, magnetic SANS confirms no or negligible near-surface spin disorder in these highly crystalline, homogeneously magnetized nanoparticles, resulting in an exceptionally hard magnetic material with high coercivity.

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Size dependence of the surface spin disorder and surface anisotropy constant in ferrite nanoparticles

. 2023 Aug 24 ; 5 (17) : 4563-4570. [epub] 20230803

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