6.1.6 Magnetic moment, saturation magnetization, Curie temperature - Tables and Figures

2005 ◽  
pp. 87-87
Author(s):  
S. Kobe ◽  
A. R. Ferchmin
Keyword(s):  
Curie Temperature ◽  
Saturation Magnetization ◽  
Magnetic Moment

scholarly journals Magnetic properties of the non-stoichiometric TbCo2Nix alloys

2018 ◽  
Vol 185 ◽  
pp. 04021
Author(s):  
Alexander Inishev ◽  
Evgeny Gerasimov ◽  
Nikolay Mushnikov ◽  
Pavel Terentev ◽  
Vasily Gaviko
Keyword(s):  
Magnetic Properties ◽  
Curie Temperature ◽  
Concentration Dependence ◽  
Magnetic Moment ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Thermodynamic Relation ◽  
Temperature Dependences

The magnetic and magnetothermal properties of the non-stoichiometric TbCo2Nix (0 ≤ x ≤ 0.2) alloys were studied. It was found that the concentration dependence of the Curie temperature and magnetic moment of the 3d-sublattice have a maximum at x = 0.025. The obtained experimental magnetic properties of the TbCo2Nix alloys were discussed under assumption that the Co magnetic moment in the compounds changes with increasing x. The magnetic entropy change was determined using the temperature dependences of the magnetization and Maxwell’s thermodynamic relation. The obtained results for TbCo2Nix were compared with those for the ErCo2Mnx alloys.

Magnetic Moment and Curie Temperature in Amorphous Co-R Alloys

1990 ◽  
Vol 5 (5) ◽  
pp. 431-436 ◽  
Author(s):  
Yang Xing-Bo ◽  
S. Ishio ◽  
T. Miyazaki
Keyword(s):  
Curie Temperature ◽  
Magnetic Moment

Ferromagnetism in lightly Gd doped GaN: The role of defects

2011 ◽  
Vol 1290 ◽  
Author(s):  
J. K. Mishra ◽  
S. Dhar ◽  
M. A. Khaderabad ◽  
O. Brandt
Keyword(s):  
Magnetic Properties ◽  
Molecular Beam Epitaxy ◽  
Saturation Magnetization ◽  
Magnetic Moment ◽  
Molecular Beam ◽  
Defect Density ◽  
Defect Cluster ◽  
Clear Correlation ◽  
Defect Band

ABSTRACTGd:GaN layers grown with different Gd concentrations by molecular beam epitaxy (MBE) are studied using photoconductivity and photo-thermoelectric power spectroscopy. Our study reveals that the incorporation of Gd produces a large concentration of acceptor-like defects in the GaN lattice. The defect band is found to be located ~450meV above the valence band. Moreover, the concentration of defects is found to increase with the Gd concentration. The effect of annealing on the structural and the magnetic properties of GaN implanted with Gd is also investigated. A clear correlation between the saturation magnetization and the defect density is observed in implanted samples. The colossal magnetic moment per Gd ion and the ferromagnetism observed in this material is explained in terms of the formation of giant defect cluster around each Gd ion.

Ferromagnetic Ordering in the Thallide EuPdTl2

2006 ◽  
Vol 61 (2) ◽  
pp. 159-163 ◽  
Author(s):  
Rainer Kraft ◽  
Sudhindra Rayaprol ◽  
C. Peter Sebastian ◽  
Rainer Pöttgen
Keyword(s):  
Curie Temperature ◽  
Single Crystals ◽  
Magnetic Moment ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Zintl Phase ◽  
X Ray ◽  
Divalent Europium ◽  
Ferromagnetic Ordering

AbstractThe new thallide EuPdTl2, synthesized from the elements in a sealed tantalum tube in a highfrequency furnace, was investigated by X-ray diffraction on powders and single crystals: MgCuAl2 type, Cmcm, Z = 4, a = 446.6(1), b = 1076.7(2), c = 812.0(2) pm, wR2 = 0.0632, 336 F2 values, 16 variables. The structure can be considered as an orthorhombically distorted, palladium-filled variant of the binary Zintl phase EuTl2. The palladium and thallium atoms build up a three-dimensional [PdTl2] polyanion with significant Pd-Tl (286 - 287 pm) and Tl-Tl (323 - 329 pm) interactions. The europium atoms fill distorted hexagonal channels of the [PdTl2] polyanion. Susceptibility measurements show a magnetic moment of 7.46(5) μB/Eu atom, indicative of divalent europium. EuPdTl2 is a soft ferromagnet with a Curie temperature of TC = 12.5(5) K.

Demonstration of high-performance pole pieces made of monocrystalline dysprosium for short-period undulators

2019 ◽  
Vol 26 (4) ◽  
pp. 1220-1225
Author(s):  
Takashi Tanaka ◽  
Akihiro Kagamihata
Keyword(s):  
Magnetic Flux ◽  
Curie Temperature ◽  
Saturation Magnetization ◽  
High Performance ◽  
Permanent Magnets ◽  
Magnetic Performance ◽  
Short Period ◽  
Conventional Material ◽  
Selection Of

Reported here are the results of experiments carried out to demonstrate the magnetic performance of dysprosium (Dy) to enhance the capability of undulators. Tiny pieces of monocrystalline Dy surrounded by permanent magnets (PMs) work as pole pieces (PPs) to concentrate the magnetic flux, when cooled down below the Curie temperature of 85 K. A PP made of Dy is much more attractive than one made of a conventional material, because its saturation magnetization is much higher. Furthermore, it also allows for a more flexible selection of PM material, potentially leading to further enhancement of the performance of short-period undulators. Besides these advantages, practical issues related to using Dy PPs and countermeasures against them are discussed.

Nanocrystalline MnFe2O4 produced by niobium doping

1999 ◽  
Vol 14 (10) ◽  
pp. 3957-3961 ◽  
Author(s):  
T. K. Kundu ◽  
D. Chakravorty
Keyword(s):  
Curie Temperature ◽  
Saturation Magnetization ◽  
Active Oxygen ◽  
Niobium Doping ◽  
Ferrimagnetic Phase ◽  
Break Up

Nanosized MnFe2O4 phase with diameters in the range 13.7 to 100 nm were produced by calcination and sintering treatments in the system zNb2O5 · (50 – z)MnO · 50Fe2O3 with z having values between 0 and 20. Nb5+ ions are believed to give rise to vacancies in the Mn2+ sites, which break up the coupling of ferrimagnetically active oxygen polyhedra. The Curie temperature decreases as the size of the MnFe2O4 phase is reduced. This is explained on the basis of a decrease in the number of exchange pairs of the type Mn2+–Fe3+. The coercivity increases with a decrease in the size of the ferrimagnetic phase. This is believed to arise due to a decrease in saturation magnetization as the size of the MnFeO4 phase is reduced.

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