THE MAGNETIC PROPERTIES OF A FERROFLUID WITH DIPOLAR INTERACTIONS

1985 ◽  
Vol 46 (C6) ◽  
pp. C6-283-C6-286
Author(s):  
A. Bradbury ◽  
S. Menear ◽  
R. W. Chantrell ◽  
K. O'Grady
Keyword(s):  
Magnetic Properties ◽  
Dipolar Interactions

Effects of dipolar interactions on magnetic properties of Co nanowire arrays

2017 ◽  
Vol 26 (11) ◽  
pp. 117503
Author(s):  
Hong-Jian Li ◽  
Ming Yue ◽  
Qiong Wu ◽  
Yi Peng ◽  
Yu-Qing Li ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Nanowire Arrays ◽  
Dipolar Interactions

Effects of dipolar interactions on magnetic properties of granular solids

2005 ◽  
Vol 294 (2) ◽  
pp. 127-132 ◽  
Author(s):  
A.L. Brandl ◽  
L.M. Socolovsky ◽  
J.C. Denardin ◽  
M. Knobel
Keyword(s):  
Magnetic Properties ◽  
Dipolar Interactions ◽  
Granular Solids

Effects of dipolar interactions on the magnetic properties of γ-Fe2O3 nanoparticles in the blocked state

2006 ◽  
Vol 99 (8) ◽  
pp. 08N705 ◽  
Author(s):  
W. C. Nunes ◽  
F. Cebollada ◽  
M. Knobel ◽  
D. Zanchet
Keyword(s):  
Magnetic Properties ◽  
Fe2o3 Nanoparticles ◽  
Dipolar Interactions

FTIR, magnetic and Mössbauer investigations of nano-crystalline FexCo1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route

2015 ◽  
Vol 39 (12) ◽  
pp. 9641-9649 ◽  
Author(s):  
Shankar B. Dalavi ◽  
M. Manivel Raja ◽  
Rabi N. Panda
Keyword(s):  
Magnetic Properties ◽  
Size Range ◽  
Nano Materials ◽  
Dipolar Interactions ◽  
Nano Crystalline

Observation of strong dipolar interactions leading to improved magnetic properties of chemically synthesized FexCo1−xalloy nano-materials (size range, 24–51 nm).

scholarly journals Tuning Easy Magnetization Direction and Magnetostatic Interactions in High Aspect Ratio Nanowires

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3042
Author(s):  
Hafsa Khurshid ◽  
Rahana Yoosuf ◽  
Bashar Afif Issa ◽  
Atta G. Attaelmanan ◽  
George Hadjipanayis
Keyword(s):  
Magnetic Properties ◽  
Uniaxial Anisotropy ◽  
Growth Direction ◽  
Diameter Ratio ◽  
Nanowire Growth ◽  
Dipolar Interactions ◽  
Easy Magnetization ◽  
Magnetization Direction ◽  
Cobalt Nanowires ◽  
Easy Magnetization Direction

Cobalt nanowires have been synthesized by electrochemical deposition using track-etched anodized aluminum oxide (AAO) templates. Nanowires with varying spacing-to-diameter ratios were prepared, and their magnetic properties were investigated. It is found that the nanowires’ easy magnetization direction switches from parallel to perpendicular to the nanowire growth direction when the nanowire’s spacing-to-diameter ratio is reduced below 0.7, or when the nanowires’ packing density is increased above 5%. Upon further reduction in the spacing-to-diameter ratio, nanowires’ magnetic properties exhibit an isotropic behavior. Apart from shape anisotropy, strong dipolar interactions among nanowires facilitate additional uniaxial anisotropy, favoring an easy magnetization direction perpendicular to their growth direction. The magnetic interactions among the nanowires were studied using the standard method of remanence curves. The demagnetization curves and Delta m (Δm) plots showed that the nanowires interact via dipolar interactions that act as an additional uniaxial anisotropy favoring an easy magnetization direction perpendicular to the nanowire growth direction. The broadening of the dipolar component of Δm plots indicate an increase in the switching field distribution with the increase in the nanowires’ diameter. Our findings provide an important insight into the magnetic behavior of cobalt nanowires, meaning that it is crucial to design them according to the specific requirements for the application purposes.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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