Gram scale synthesis of high magnetic moment Fe100−xCox alloy nanoparticles: Reaction mechanism, structural and magnetic properties and its application on nanocomposite

2012 ◽  
Vol 111 (7) ◽  
pp. 07B539 ◽  
Author(s):  
Chins Chinnasamy ◽  
Jonathan Herr ◽  
Riyanka Pai ◽  
Baozhi Cui ◽  
Wanfeng Li ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Reaction Mechanism ◽  
Magnetic Moment ◽  
Alloy Nanoparticles ◽  
Structural And Magnetic Properties ◽  
High Magnetic Moment

Theoretical Studies of the Structural, Electronic and Magnetic Properties of the CoFeCeZ (Z = P, As and Sb) Quaternary Heusler Alloys

SPIN ◽  
2019 ◽  
Vol 10 (01) ◽  
pp. 2050002 ◽  
Author(s):  
F. N. Gharbi ◽  
I. E. Rabah ◽  
M. Rabah ◽  
H. Rached ◽  
D. Rached ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Moment ◽  
Heusler Alloys ◽  
Ferromagnetic Phase ◽  
Full Potential ◽  
Half Metallicity ◽  
Electronic And Magnetic Properties ◽  
Quaternary Heusler Alloys ◽  
Lmto Method ◽  
High Magnetic Moment

In this paper, we investigate the structural, electronic and magnetic properties of CoFeCrZ ([Formula: see text], As,Sb) quaternary Heusler alloy, using the first-principles full potential linear muffin-tin orbital (FP-LMTO) method within the spin gradient generalized approximation (GGA) for the exchange and correlation potential. Our results demonstrate that in ferromagnetic phase, the all alloys CoFeCrZ are stable in type-1 configuration and are half-metallic ferromagnets (HMF) with gaps of 0.99[Formula: see text]eV, 0.57[Formula: see text]eV and 0.70[Formula: see text]Ev, respectively. The obtained negative formation energy shows that CoFeCrZ alloys have strong structural stability. The calculated total magnetic moment, [Formula: see text] for all alloys exhibit Slater-Pauling rule, [Formula: see text]. At zero pressure, the three alloys shown 100% spin-polarization at Fermi–level [Formula: see text] with high Curie temperatures [Formula: see text]. Our calculation indicate also that the half-metallicity and high magnetic moment of CoFeCrP, CoFeCrAs and CoFeCrSb are robust against the lattice compression (up to 7.80%, 5.40% and 11%, respectively). On the basis of these results, it is suggested that the CoFeCrZ Heusler could be suitable for spintronics devices applications.

MAGNETIC PROPERTIES OF ICOSAHEDRAL COPPER-COATED COBALT CLUSTERS

2004 ◽  
Vol 11 (01) ◽  
pp. 15-20 ◽  
Author(s):  
BAOLIN WANG ◽  
XIAOSHUANG CHEN ◽  
GUIBIN CHEN ◽  
GUANGHOU WANG ◽  
JIJUN ZHAO
Keyword(s):  
Genetic Algorithm ◽  
Magnetic Properties ◽  
Magnetic Moment ◽  
Tight Binding ◽  
Tight Binding Model ◽  
Significant Modification ◽  
Binding Model ◽  
Model Hamiltonian ◽  
Spin Polarized ◽  
Structural And Magnetic Properties

The structural and magnetic properties of Cu -coated Co clusters are investigated with empirical genetic algorithm simulation and a spin-polarized spd tight-binding model Hamiltonian. In some specific stoichiometric compositions, icosahedral Co n (n=1, 2, 4, 7, 13, 19, 55) clusters perfectly coated with A Cu monolayer or dual layer are obtained. The outer Cu layers lead to significant modification of the magnetic moment of the Co core, depending on the structure and thickness of the Cu layers. The interaction between Cu and Co atoms induces a nonzero magnetic moment for Cu atoms.

Diphenoxo-Bridged NiIILnIIIDinuclear Complexes as Platforms for Heterotrimetallic (LnIIINiII)2RuIIISystems with a High-Magnetic-Moment Ground State: Synthesis, Structure, and Magnetic Properties

2012 ◽  
Vol 51 (13) ◽  
pp. 7010-7012 ◽  
Author(s):  
María A. Palacios ◽  
Antonio J. Mota ◽  
José Ruiz ◽  
Mikko M. Hänninen ◽  
Reijo Sillanpää ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Moment ◽  
Ground State ◽  
High Magnetic Moment

Sonochemical synthesis, structural and magnetic properties of air-stable Fe/Co alloy nanoparticles

2003 ◽  
Vol 27 (8) ◽  
pp. 1194 ◽  
Author(s):  
Qiaoling Li ◽  
Hongliang Li ◽  
V. G. Pol ◽  
Ishai Bruckental ◽  
Yuri Koltypin ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Alloy Nanoparticles ◽  
Sonochemical Synthesis ◽  
Structural And Magnetic Properties

A Study of Exchange Interactions in R(FeCo)11TiCy (R=Y or Pr) Compounds

2011 ◽  
Vol 170 ◽  
pp. 223-226
Author(s):  
Corneliu Bazil Cizmas ◽  
Lotfi Bessais
Keyword(s):  
Magnetic Properties ◽  
Exchange Interaction ◽  
Magnetic Moment ◽  
Exchange Coupling ◽  
Interaction Strength ◽  
Exchange Interactions ◽  
Field Approximation ◽  
Molecular Field ◽  
Coupling Parameters ◽  
Structural And Magnetic Properties

The exchange interactions in PrFe11-xCoxTiCy (x=0÷2, y≤1), are analyzed on the basis of the structural and magnetic properties of polycrystalline samples. The magnetic properties of polycrystalline isomorphous compounds YFe11-xCoxTiCy have been used in order to determine the T (T=Fe+Co) sub-lattice contributions, such as the T sub-lattice mean magnetic moment and the T-T exchange interaction strength. The exchange coupling parameters JTT, JRT and the recurrent molecular field coefficients nTT, nRT have been calculated in the molecular field approximation (MCA). The effects of Co content and carbonation on the R-T (T=Fe+Co) and on the T-T exchange interactions are analyzed.

On the structural and magnetic properties of K3CrTe3O12, Na3CrTe3O12 and NaCrTe2O8

1983 ◽  
Vol 48 (8) ◽  
pp. 2197-2204 ◽  
Author(s):  
Pavel Danihelka
Keyword(s):  
Magnetic Properties ◽  
Oxidation State ◽  
Magnetic Moment ◽  
Magnetic Moments ◽  
Basic Structure ◽  
Lattice Parameters ◽  
Sodium Salts ◽  
Tetragonal System ◽  
Structural And Magnetic Properties ◽  
Potassium Compound

K3CrTe3O12, Na3CrTe3O12, and NaCrTe2O8 were obtained by reacting telluric acid or amorphous potassium tellurate with molten alkali dichromates, and their structural and magnetic properties were studied. The three substances are paramagnetic, with magnetic moments corresponding to the chromium oxidation state III. The sodium compounds obey the Curie-Weiss law up to the temperature of decomposition, the potassium compound follows this law up to a temperature of 800 K, above which the magnetic moment of chromium decreases probably on account of a partial reversible oxidation of chromium by the tellurium(VI) present. The three substances investigated were indexed in the tetragonal system and their lattice parameters were calculated. The two sodium salts involve the same basic structure motiv, viz. Te12O4824-.

Investigation of structural and magnetic properties of thermal plasma-synthesized Fe1−xNi alloy nanoparticles

2016 ◽  
Vol 663 ◽  
pp. 30-40 ◽  
Author(s):  
Nilesh S. Kanhe ◽  
Amit Kumar ◽  
S.M. Yusuf ◽  
A.B. Nawale ◽  
S.S. Gaikwad ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Thermal Plasma ◽  
Alloy Nanoparticles ◽  
Structural And Magnetic Properties
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