scholarly journals High-temperature magnetic properties of noninteracting randomly oriented single-domain Fe3−δO4 nanoparticles

2011 ◽  
Vol 375 (13) ◽  
pp. 1510-1513 ◽  
Author(s):  
Jun Wang ◽  
Pieder Beeli ◽  
L.H. Meng ◽  
Guo-meng Zhao
Keyword(s):  
Magnetic Properties ◽  
High Temperature ◽  
Single Domain

High-Temperature First-Order-Reversal-Curve (FORC) Study of Magnetic Nanoparticle Based Nanocomposite Materials

MRS Advances ◽  
2017 ◽  
Vol 2 (49) ◽  
pp. 2669-2674
Author(s):  
B. Dodrill ◽  
P. Ohodnicki ◽  
M. McHenry ◽  
A. Leary
Keyword(s):  
Magnetic Properties ◽  
High Temperature ◽  
Magnetic Nanoparticle ◽  
Magnetic Particles ◽  
Nanocomposite Materials ◽  
Single Domain ◽  
Magnetic Interactions ◽  
First Order ◽  
Soils And Sediments ◽  
Properties Of Materials

AbstractFirst-order-reversal-curves (FORCs) are an elegant, nondestructive tool for characterizing the magnetic properties of materials comprising fine (micron- or nano-scale) magnetic particles. FORC measurements and analysis have long been the standard protocol used by geophysicists and earth and planetary scientists investigating the magnetic properties of rocks, soils, and sediments. FORC can distinguish between single-domain, multi-domain, and pseudo single-domain behavior, and it can distinguish between different magnetic mineral species [1]. More recently, FORC has been applied to a wider array of magnetic material systems because it yields information regarding magnetic interactions and coercivity distributions that cannot be obtained from major hysteresis loop measurements alone. In this paper, we will discuss this technique and present high-temperature FORC results for two magnetic nanoparticle materials: CoFe nanoparticles dispersed in a SiO2 matrix, and FeCo-based nanocrystalline amorphous/nanocomposites.

MAGNETIC PROPERTIES OF PSEUDO-BINARY Mn1−xFexSn2 ALLOYS

1993 ◽  
Vol 07 (01n03) ◽  
pp. 867-870 ◽  
Author(s):  
H. SHIRAISHI ◽  
T. HORI ◽  
Y. YAMAGUCHI ◽  
S. FUNAHASHI ◽  
K. KANEMATSU
Keyword(s):  
Field Theory ◽  
Phase Diagram ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
High Temperature ◽  
Magnetic Structure ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Molecular Field ◽  
Magnetic Phases

The magnetic susceptibility measurements have been made on antiferromagnetic compounds Mn1–xFexSn2 and the magnetic phase diagram was illustrated. The high temperature magnetic phases I and III, major phases, were analyzed on the basis of molecular field theory and explained the change of magnetic structure I⇌III occured at x≈0.8.

Effect of Temperature on the Magnetic Permeability of Hexagonal Ferrites

2018 ◽  
Vol 781 ◽  
pp. 36-40
Author(s):  
Olga Dotsenko ◽  
Kirill Frolov ◽  
Dmitry Wagner ◽  
Veronika Dotsenko ◽  
Dmitry Aksentev
Keyword(s):  
Magnetic Properties ◽  
High Temperature ◽  
High Frequency ◽  
Solid State Reaction Method ◽  
Nonlinear Dependence ◽  
Effect Of Temperature ◽  
Hexagonal Ferrites ◽  
Temperature Synthesis ◽  
Reaction Method ◽  
High Temperature Synthesis

In this study, Co0,7Zn1,3W powders were synthesized and investigated at the microwave region. The solid-state reaction method and self-propagating high-temperature synthesis were used to production of the two kinds of hexaferrite powders. The high-frequency magnetic properties under temperature effect have been studied. It is show, that there is a nonlinear dependence on temperature within the 0 – +40 °C temperature range.

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