Surface effects on the magnetic behavior of nanoparticle assemblies

2012 ◽  
Vol 85 (2) ◽  
Author(s):  
G. Margaris ◽  
K. Trohidou ◽  
H. Kachkachi
Keyword(s):  
Magnetic Behavior ◽  
Surface Effects ◽  
Nanoparticle Assemblies

Surface effects on the magnetic behavior of antiferromagnetic particles

1998 ◽  
Vol 84 (5) ◽  
pp. 2795-2800 ◽  
Author(s):  
K. N. Trohidou ◽  
X. Zianni ◽  
J. A. Blackman
Keyword(s):  
Magnetic Behavior ◽  
Surface Effects

Magnetic behavior of dense nanoparticle assemblies: Interplay of interparticle interactions and particle system morphology

2012 ◽  
Vol 86 (21) ◽  
Author(s):  
G. Margaris ◽  
K. N. Trohidou ◽  
V. Iannotti ◽  
G. Ausanio ◽  
L. Lanotte ◽  
...  
Keyword(s):  
Particle System ◽  
Magnetic Behavior ◽  
Interparticle Interactions ◽  
Nanoparticle Assemblies

Influence of Surface Effects on Magnetic Behavior of Hematite Nanoparticles Embedded in Porous Silica Matrix

2009 ◽  
Vol 113 (30) ◽  
pp. 13045-13050 ◽  
Author(s):  
Vladimir Zelenak ◽  
Adriana Zelenakova ◽  
Jozef Kovac ◽  
Ulla Vainio ◽  
Nataliya Murafa
Keyword(s):  
Porous Silica ◽  
Magnetic Behavior ◽  
Surface Effects ◽  
Silica Matrix ◽  
Hematite Nanoparticles

Size effects on the magnetic behavior of γ-Fe2O3 core/SiO2 shell nanoparticle assemblies

2021 ◽  
Vol 522 ◽  
pp. 167570
Author(s):  
Marianna Vasilakaki ◽  
Fevronia Gemenetzi ◽  
Eamonn Devlin ◽  
Dong Kee Yi ◽  
Siti Nurhanna Riduan ◽  
...  
Keyword(s):  
Size Effects ◽  
Magnetic Behavior ◽  
Nanoparticle Assemblies ◽  
Sio2 Shell

Magnetic studies of layer-by-layer assembled polyvinyl alcohol/iron oxide nanofilms

2018 ◽  
Vol 20 (41) ◽  
pp. 26696-26709 ◽  
Author(s):  
Ewa Mosiniewicz-Szablewska ◽  
Antonia R. Clavijo ◽  
Ana P. O. R. Castilho ◽  
Leonardo G. Paterno ◽  
Marcelo A. Pereira-da-Silva ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Polyvinyl Alcohol ◽  
Substrate Surface ◽  
Magnetic Behavior ◽  
Surface Effects ◽  
Layer By Layer ◽  
Magnetic Studies

The importance of the substrate surface effects on the magnetic behavior of layer-by-layer assembled polyvinyl alcohol/iron oxide nanofilms is evidenced.

scholarly journals Iron nanoparticle assemblies: structures and magnetic behavior

2005 ◽  
Vol 17 ◽  
pp. 185-195 ◽  
Author(s):  
D Farrell ◽  
Y Cheng ◽  
S Kan ◽  
M Sachan ◽  
Y Ding ◽  
...  
Keyword(s):  
Magnetic Behavior ◽  
Iron Nanoparticle ◽  
Nanoparticle Assemblies

Lorentz electron microscopy of magnetic domains in rapidly solidified and annealed Pt-Co-B alloys

1991 ◽  
Vol 49 ◽  
pp. 784-785
Author(s):  
N. Qiu ◽  
J. E. Wittig
Keyword(s):  
Rapid Solidification ◽  
Ion Beam ◽  
Magnetic Behavior ◽  
High Coercivity ◽  
Magnetic Domains ◽  
Beam Angle ◽  
Tem Analysis ◽  
Intrinsic Coercivity ◽  
Hard Magnets ◽  
Rapidly Solidified

PtCo hard magnets have specialized applications owing to their relatively high coercivity combined with corrosion resistance and ductility. Increased intrinsic coercivity has been recently obtained by rapid solidification processing of PtCo alloys containing boron. After rapid solidification by double anvil splat quenching and subsequent annealing for 30 minutes at 650°C, an alloy with composition Pt42Co45B13 (at.%) exhibited intrinsic coercivity up to 14kOe. This represents a significant improvement compared to the average coercivities in conventional binary PtCo alloys of 5 to 8 kOe.Rapidly solidified specimens of Pt42Co45B13 (at.%) were annealed at 650°C and 800°C for 30 minutes. The magnetic behavior was characterized by measuring the coercive force (Hc). Samples for TEM analysis were mechanically thinned to 100 μm, dimpled to about 30 nm, and ion milled to electron transparency in a Gatan Duomill at 5 kV and 1 mA gun current. The incident ion beam angle was set at 15° and the samples were liquid nitrogen cooled during milling. These samples were analyzed with a Philips CM20T TEM/STEM operated at 200 kV.

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