Synthesis and characterization of Ni grafted RGO—A nanocomposite with tunable magnetic properties

2022 ◽  
Vol 342 ◽  
pp. 114602
Author(s):  
S. Goswami ◽  
A. Banerjee ◽  
M. Chakraborty ◽  
D. De
Keyword(s):  
Magnetic Properties ◽  
Synthesis And Characterization

Synthesis and Characterization of Particle-reinforced Ni/Al2O3 Nanocomposites

2002 ◽  
Vol 17 (6) ◽  
pp. 1412-1418 ◽  
Author(s):  
I. Shao ◽  
P. M. Vereecken ◽  
C. L. Chien ◽  
P. C. Searson ◽  
R. C. Cammarata
Keyword(s):  
Magnetic Properties ◽  
Rotation Rate ◽  
Particle Concentration ◽  
Volume Fraction ◽  
Particle Dispersion ◽  
Nanocomposite Films ◽  
Synthesis And Characterization ◽  
Electrode Rotation ◽  
Deposition Current Density

Nanocomposite Ni/Al2O3 films were electrodeposited from a suspension of Al2O3 nanoparticles in aqueous nickel sulfamate solution. The volume fraction of particles incorporated increased with electrode rotation rate and decreased with deposition current density. The composition, microstructure, hardness, and magnetic properties of these nanocomposite films were characterized. The mechanical strengthening due to particle dispersion in the films was interpreted by considering an Orowan dislocation bowing mechanism. The coercivity of the films increased with increasing particle concentration in the film. The saturation magnetization showed a weak dependence on particle concentration.

Preparation and properties of thienyl and 2,2′-bithienyl substituted cobalt-bis(semiquinone) valence tautomers

2009 ◽  
Vol 87 (4) ◽  
pp. 533-538 ◽  
Author(s):  
Thomas J. O’Sullivan ◽  
Brandon Djukic ◽  
Paul A. Dube ◽  
Martin T. Lemaire
Keyword(s):  
Magnetic Properties ◽  
Synthesis And Characterization ◽  
Electronic And Magnetic Properties ◽  
Valence Tautomers

The synthesis and characterization of two new 2,2′-bipyridine ligands containing 3-ethynylthiophene and 3,3′-diethynyl-2,2′-bithiophene substituents is presented, along with the preparation, electronic, and magnetic properties of mono- and bimetallic cobalt-semiquinone valence tautomers containing these ligands.

Synthesis and Characterization of the First 1:2 Ordered Perovskite Ruthenate

2002 ◽  
Vol 718 ◽  
Author(s):  
Job Rijssenbeek ◽  
Sylvie Malo ◽  
Takashi Saito ◽  
Vincent Caignaert ◽  
Masaki Azuma ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Neutron Diffraction ◽  
Structure Type ◽  
Synthesis And Characterization ◽  
Neutron Diffraction Data ◽  
X Ray ◽  
Relationship Of ◽  
The Relationship ◽  
Perovskite Lattice

AbstractPerovskite-like mixed metal ruthenates are of interest owing to their varied electronic and magnetic properties, which are heavily dependent on the ordering of the transition metals. We report the synthesis and structural characterization of the first 1:2 ordered perovskite ruthenate, Sr3CaRu2O9. The structure was determined from a combination of powder X-ray, electron and neutron diffraction data and is characterized by a 1:2 ordering of Ca2+ and Ru5+ over the sixcoordinate B-sites of the perovskite lattice. Sr3CaRu2O9 is the first example of this structure-type to include a majority metal with d electrons (Ru(V), d3). The relationship of this material to the K2NiF4-type Sr1.5Ca0.5RuO4 (i.e., Sr3CaRu2O8) highlights the dramatic effects of the ruthenium valence on the resultant structure. Remarkably, these two structures can be quantitatively interconverted by the appropriate choice of reaction temperature and atmosphere.

ChemInform Abstract: Synthesis and Characterization of Discrete FeNi2-xP Nanocrystals (0 < x < 2): Compositional Effects on Magnetic Properties.

ChemInform ◽  
2015 ◽  
Vol 46 (51) ◽  
pp. no-no
Author(s):  
Asha Hitihami-Mudiyanselage ◽  
Maheshika Palihawadana Arachchige ◽  
Takele Seda ◽  
Gavin Lawes ◽  
Stephanie L. Brock
Keyword(s):  
Magnetic Properties ◽  
Synthesis And Characterization ◽  
Compositional Effects

Synthesis and Characterization of Magnetic Al/NiO Composite Pigments with Low Infrared Emissivity

2017 ◽  
Vol 898 ◽  
pp. 1561-1568 ◽  
Author(s):  
Yun Feng Liu ◽  
Jian Liang Xie ◽  
Mei Luo ◽  
Bo Peng ◽  
Long Jiang Deng
Keyword(s):  
Magnetic Properties ◽  
Efficient Method ◽  
Spectral Reflectance ◽  
Synthesis And Characterization ◽  
Magnetic Composite ◽  
Infrared Emissivity ◽  
Flowing Liquid ◽  
Aluminum Flake ◽  
Addition Amount

Generally, traditional low infrared coatings based on metallic pigments cannot have low lightness, low infrared emissivity and low radar reflectivity simultaneously. Herein, we used a simple and efficient method to synthesize magnetic Al/NiO composite pigments which possessed all these attributes to a degree. The results indicated that the covering area of NiO on the aluminum flake could be tuned by the addition amount of NiCO3 and the reaction temperature of hot-flowing, both of which played a key role on the VIS/IR spectral reflectance and magnetic properties. The magnetic Al/NiO composite pigments with low lightness and low infrared emissivity could be obtained at 130 °C for 24 h in hot flowing liquid. The lightness L* could be decreased to 75.94, however the infrared emissivity (8-14 μm) was also low to 0.421. Compared with the single aluminum flakes, the Al/NiO magnetic composite pigments presented stronger magnetic properties. Therefore, the Al/NiO magnetic composite pigments offered a new choice for the pigments of multispectral stealth coating.

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