scholarly journals Role of oxygen defects on the magnetic properties of ultra-small Sn1−xFexO2 nanoparticles

2013 ◽  
Vol 113 (17) ◽  
pp. 17B504 ◽  
Author(s):  
Kelsey Dodge ◽  
Jordan Chess ◽  
Josh Eixenberger ◽  
Gordon Alanko ◽  
Charles B. Hanna ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Oxygen Defects

Magnetic Properties of xCeO2•(50 − x) PbO•50B2O3 Glasses and Glass Ceramics

2017 ◽  
Vol 13 (1) ◽  
pp. 4486-4494 ◽  
Author(s):  
G.El Damrawi ◽  
F. Gharghar
Keyword(s):  
Magnetic Properties ◽  
Large Scale ◽  
Glass Ceramics ◽  
Magnetic Behavior ◽  
Crystal Formation ◽  
Dual Roles ◽  
Effective Agent ◽  
Ordered Structures ◽  
Essential Change

Cerium oxide in borate glasses of composition xCeO2·(50 − x)PbO·50B2O3 plays an important role in changing both microstructure and magnetic behaviors of the system. The structural role of CeO2 as an effective agent for cluster and crystal formation in borate network is clearly evidenced by XRD technique. Both structure and size of well-formed cerium separated clusters have an effective influence on the structural properties. The cluster aggregations are documented to be found in different range ordered structures, intermediate and long range orders are the most structures in which cerium phases are involved. The nano-sized crystallized cerium species in lead borate phase are evidenced to have magnetic behavior.  The criteria of building new specific borate phase enriched with cerium as ferrimagnetism has been found to keep the magnetization in large scale even at extremely high temperature. Treating the glass thermally or exposing it to an effective dose of ionized radiation is evidenced to have an essential change in magnetic properties. Thermal heat treatment for some of investigated materials is observed to play dual roles in the glass matrix. It can not only enhance alignment processes of the magnetic moment but also increases the capacity of the crystallite species in the magnetic phases. On the other hand, reverse processes are remarked under the effect of irradiation. The magnetization was found to be lowered, since several types of the trap centers which are regarded as defective states can be produced by effect of ionized radiation. 

Temperature and field dependences of transverse relaxivity of Co–Zn ferrite nanoparticles coated with silica: The role of magnetic properties and different regimes

2021 ◽  
Vol 260 ◽  
pp. 124178
Author(s):  
Pavel Veverka ◽  
Lenka Kubíčková ◽  
Zdeněk Jirák ◽  
Vít Herynek ◽  
Miroslav Veverka ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ferrite Nanoparticles ◽  
Zn Ferrite

Role of Fe Doping on Local Structure and Electrical and Magnetic Properties of PbTiO3

2021 ◽  
Author(s):  
Hasitha Ganegoda ◽  
Soham Mukherjee ◽  
Beihai Ma ◽  
Daniel T. Olive ◽  
James H. McNeely ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Local Structure ◽  
Fe Doping ◽  
Electrical And Magnetic Properties

scholarly journals Role of Ce concentration on the structural and magnetic properties of functional magnetic oxide particles

2021 ◽  
Author(s):  
Jyoti Saini ◽  
Monika Sharma ◽  
Bijoy Kumar Kuanr
Keyword(s):  
Signal Processing ◽  
Magnetic Properties ◽  
Magnetic Oxide ◽  
Oxide Particles ◽  
Structural And Magnetic Properties

Functional magnetic oxide particles offer exceptional GHz frequency capabilities, which can significantly enhance the utility of communication and signal processing devices.

scholarly journals Microstructure and magnetic properties of Nd-Fe-B-(Re, Ti) alloys

Nukleonika ◽  
2015 ◽  
Vol 60 (1) ◽  
pp. 29-33
Author(s):  
Mariusz Hasiak
Keyword(s):  
Magnetic Properties ◽  
Phase Composition ◽  
Volume Fraction ◽  
Magnetic Characteristics ◽  
Ti Alloys ◽  
Wide Range ◽  
Magnetically Hard ◽  
Ti Addition ◽  
Microstructure And Magnetic Properties

Abstract The microstructure and magnetic properties of nanocomposite hard magnetic Nd-Fe-B-(Re, Ti) materials with different Nd and Fe contents are studied. The role of Re and Ti addition in phase composition and volume fraction of the Nd-Fe-B phase is determined. All samples are annealed at the same temperature of 993 K for 10 min. Mössbauer spectroscopy shows that the addition of 4 at.% of Re to the Nd8Fe78B14 alloy leads to creation of an ineligible amount of the magnetically hard Nd2Fe14B phase. Moreover, the microstructure and magnetic characteristics recorded in a wide range of temperatures for the Nd8Fe79−xB13Mx (x = 4; M = Re or Ti) alloys are also analyzed.

Role of oxygen defects in diluted Mn:Ge

2008 ◽  
Vol 78 (8) ◽  
Author(s):  
A. Continenza ◽  
G. Profeta
Keyword(s):  
Oxygen Defects
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