Applications of exchange coupled bi-magnetic hard/soft and soft/hard magnetic core/shell nanoparticles

A López-Ortega, M Estrader, G Salazar-Alvarez… - Physics Reports, 2015 - Elsevier
The applications of exchange coupled bi-magnetic hard/soft and soft/hard ferromagnetic
core/shell nanoparticles are reviewed. After a brief description of the main synthesis …

Two interface effects: Exchange bias and magnetic proximity

PK Manna, SM Yusuf - Physics Reports, 2014 - Elsevier
Exchange bias and magnetic proximity effects are two novel phenomena that are in the
limelight because of their fundamental and technological importance. Since both …

Manipulating electronic delocalization of Mn3O4 by manganese defects for oxygen reduction reaction

YC Zhang, S Ullah, R Zhang, L Pan, X Zhang… - Applied Catalysis B …, 2020 - Elsevier
Manganese-based oxides are promising in electrocatalytic oxygen reduction reaction, but
the activity and conductivity need further improvement. Herein manganese defected Mn3O4 …

Anomalous Magnetic Properties of Nanoparticles Arising from Defect Structures: Topotaxial Oxidation of Fe1–xO|Fe3−δO4 Core|Shell Nanocubes to Single-Phase …

E Wetterskog, CW Tai, J Grins, L Bergstrom… - ACS …, 2013 - ACS Publications
Here we demonstrate that the anomalous magnetic properties of iron oxide nanoparticles
are correlated with defects in their interior. We studied the evolution of microstructure and …

Strongly exchange coupled core| shell nanoparticles with high magnetic anisotropy: a strategy toward rare-earth-free permanent magnets

E Lottini, A López-Ortega, G Bertoni, S Turner… - Chemistry of …, 2016 - ACS Publications
Antiferromagnetic (AFM)| ferrimagnetic (FiM) core| shell (CS) nanoparticles (NPs) of formula
Co0. 3Fe0. 7O| Co0. 6Fe2. 4O4 with mean diameter from 6 to 18 nm have been synthesized …

Shape matters: anisotropy of the morphology of inorganic colloidal particles–synthesis and function

S Polarz - Advanced Functional Materials, 2011 - Wiley Online Library
The shape of a crystalline particle can be defined by a characteristic set and abundance of
surfaces corresponding to the lattice planes [hkl] of the crystal. The structure, the density, the …

Enhanced magnetic properties in antiferromagnetic-core/ferrimagnetic-shell nanoparticles

M Vasilakaki, KN Trohidou, J Nogués - Scientific reports, 2015 - nature.com
Bi-magnetic core/shell nanoparticles are gaining increasing interest due to their foreseen
applications. Inverse antiferromagnetic (AFM)/ferrimagnetic (FiM) core/shell nanoparticles …

Origin of the large dispersion of magnetic properties in nanostructured oxides: Fe x O/Fe 3 O 4 nanoparticles as a case study

M Estrader, A López-Ortega, IV Golosovsky, S Estradé… - Nanoscale, 2015 - pubs.rsc.org
The intimate relationship between stoichiometry and physicochemical properties in
transition-metal oxides makes them appealing as tunable materials. These features become …

Spinel ferrite core–shell nanostructures by a versatile solvothermal seed-mediated growth approach and study of their nanointerfaces

M Sanna Angotzi, A Musinu, V Mameli, A Ardu… - ACS …, 2017 - ACS Publications
An easy, low-cost, repeatable seed-mediated growth approach in solvothermal condition
has been proposed to synthesize bimagnetic spinel ferrite core–shell heterostructures in the …

Strongly exchange coupled inverse ferrimagnetic soft/hard, Mn x Fe 3− x O 4/Fe x Mn 3− x O 4, core/shell heterostructured nanoparticles

A López-Ortega, M Estrader, G Salazar-Alvarez… - Nanoscale, 2012 - pubs.rsc.org
Inverted soft/hard, in contrast to conventional hard/soft, bi-magnetic core/shell nanoparticles
of MnxFe3− xO4/FexMn3− xO4 with two different core sizes (7.5 and 11.5 nm) and fixed …