scholarly journals Interplay between inter- and intraparticle interactions in bi-magnetic core/shell nanoparticles

2021 ◽  
Author(s):  
Alexander Omelyanchik ◽  
Silvia Villa ◽  
Marianna Vasilakaki ◽  
Gurvinder Singh ◽  
Anna Maria Ferretti ◽  
...  
Keyword(s):  
Cobalt Ferrite ◽  
Magnetic Core ◽  
Shell Morphology ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Synthesis Strategy ◽  
Two Systems ◽  
Magnetically Hard ◽  
Core Shell Nanoparticles ◽  
Soft Nanoparticles

The synthesis strategy and magnetic characterisation of two systems consisting of nanoparticles with core/shell morphology are presented: an assembly of hard/soft nanoparticles with cores consisting of magnetically hard cobalt ferrite...

Susceptibility losses in heating of magnetic core/shell nanoparticles for hyperthermia: a Monte Carlo study of shape and size effects

Nanoscale ◽  
2015 ◽  
Vol 7 (17) ◽  
pp. 7753-7762 ◽  
Author(s):  
M. Vasilakaki ◽  
C. Binns ◽  
K. N. Trohidou
Keyword(s):  
Monte Carlo ◽  
Size Effects ◽  
Theoretical Study ◽  
Monte Carlo Study ◽  
Magnetic Core ◽  
Shell Morphology ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles ◽  
Shape And Size

Optimizing the heating properties of magnetic nanoparticles by their core/shell morphology, size and shape, a theoretical study.

scholarly journals On the synthesis of bi-magnetic manganese ferrite-based core–shell nanoparticles

2021 ◽  
Author(s):  
Marco Sanna Angotzi ◽  
Valentina Mameli ◽  
Claudio Cara ◽  
Davide Peddis ◽  
Huolin L. Xin ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Cobalt Ferrite ◽  
Magnetic Core ◽  
Oxide Shell ◽  
Core Shell ◽  
Manganese Ferrite ◽  
Shell Nanoparticles ◽  
Seed Mediated ◽  
Core Shell Nanoparticles

Dissolution phenomena in seed-mediated growth approaches of MnFe2O4-based bi-magnetic core–shell nanoheterostructures with a cobalt ferrite or spinel iron oxide shell.

scholarly journals Magnetic Properties of Bi-Magnetic Core/Shell Nanoparticles: The Case of Thin Shells

2021 ◽  
Vol 7 (11) ◽  
pp. 146
Author(s):  
Alexander Omelyanchik ◽  
Silvia Villa ◽  
Gurvinder Singh ◽  
Valeria Rodionova ◽  
Sara Laureti ◽  
...  
Keyword(s):  
Single Phase ◽  
Magnetic Core ◽  
Core Shell ◽  
Interparticle Interactions ◽  
Shell Nanoparticles ◽  
Transmission Electron ◽  
Temperature Decomposition ◽  
Metal Acetylacetonate ◽  
Magnetically Hard ◽  
Core Shell Nanoparticles

Bi-magnetic core/shell nanoparticles were synthesized by a two-step high-temperature decomposition method of metal acetylacetonate salts. Transmission electron microscopy confirmed the formation of an ultrathin shell (~0.6 nm) of NiO and NiFe2O4 around the magnetically hard 8 nm CoFe2O4 core nanoparticle. Magnetization measurements showed an increase in the coercivity of the single-phase CoFe2O4 seed nanoparticles from ~1.2 T to ~1.5 T and to ~2.0 T for CoFe2O4/NiFe2O4 and CoFe2O4/NiO, respectively. The NiFe2O4 shell also increases the magnetic volume of particles and the dipolar interparticle interactions. In contrast, the NiO shell prevents such interactions and keeps the magnetic volume almost unchanged.

scholarly journals Fabrication of copper(II)-coated magnetic core-shell nanoparticles Fe3O4@SiO2-2-aminobenzohydrazide and investigation of its catalytic application in the synthesis of 1,2,3-triazole compounds

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
H. Rajabi-Moghaddam ◽  
M. R. Naimi-Jamal ◽  
M. Tajbakhsh
Keyword(s):  
High Efficiency ◽  
Click Reaction ◽  
Magnetic Core ◽  
Core Shell ◽  
Isatoic Anhydride ◽  
Shell Nanoparticles ◽  
Triazole Derivatives ◽  
Catalytic Application ◽  
Ft Ir ◽  
Core Shell Nanoparticles

AbstractIn the present work, an attempt has been made to synthesize the 1,2,3-triazole derivatives resulting from the click reaction, in a mild and green environment using the new copper(II)-coated magnetic core–shell nanoparticles Fe3O4@SiO2 modified by isatoic anhydride. The structure of the catalyst has been determined by XRD, FE-SEM, TGA, VSM, EDS, and FT-IR analyzes. The high efficiency and the ability to be recovered and reused for at least up to 6 consecutive runs are some superior properties of the catalyst.

scholarly journals Multifunktionale bakterielle Nanomagnete für Biotechnologie und Medizin

BIOspektrum ◽  
2021 ◽  
Vol 27 (4) ◽  
pp. 442-444
Author(s):  
Frank Mickoleit ◽  
Sabine Rosenfeldt ◽  
Anna S. Schenk ◽  
Dirk Schüler ◽  
René Uebe
Keyword(s):  
Particle Production ◽  
Magnetotactic Bacteria ◽  
Magnetic Core ◽  
High Yield ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Magnetospirillum Gryphiswaldense ◽  
Core Shell Nanoparticles ◽  
Genetic Toolkit ◽  
The Way

AbstractBacterial magnetosomes represent magnetic core-shell nanoparticles biomineralized by magnetotactic bacteria like Magnetospirillum gryphiswaldense. The establishment of fermentation regimes for high-yield particle production, standardized isolation procedures as well as the development of a genetic toolkit for the generation of “tailored” particles might soon pave the way for the application of engineered magnetosomes in the biomedical and biotechnological field.

scholarly journals Novel magnetic core-shell nanoparticles for the removal of polychlorinated biphenyls from contaminated water sources

2019 ◽  
Vol 223 ◽  
pp. 68-74 ◽  
Author(s):  
Angela M. Gutierrez ◽  
Rohit Bhandari ◽  
Jiaying Weng ◽  
Arnold Stromberg ◽  
Thomas D. Dziubla ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Magnetic Core ◽  
Water Sources ◽  
Core Shell ◽  
Contaminated Water ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles
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