Icosahedral Symmetry and Magnetic Properties of Small Nickel Metal Clusters

1994 ◽  
Vol 98 (40) ◽  
pp. 9972-9978 ◽  
Author(s):  
Guillermina Lucia Estiu ◽  
Michael C. Zerner
Keyword(s):  
Magnetic Properties ◽  
Metal Clusters ◽  
Icosahedral Symmetry ◽  
Nickel Metal

Magnetic properties of free alkali and transition metal clusters

1991 ◽  
Vol 19 (1-4) ◽  
pp. 241-245 ◽  
Author(s):  
W. Heer ◽  
P. Milani ◽  
A. Ch�telain
Keyword(s):  
Magnetic Properties ◽  
Transition Metal ◽  
Metal Clusters ◽  
Free Alkali ◽  
Transition Metal Clusters

Effect of Electrolyte Composition on Corrosion Resistance in Nickel Plating Process for Coating Bonded Magnet PrFeB

2014 ◽  
Vol 896 ◽  
pp. 245-248 ◽  
Author(s):  
Candra Kurniawan ◽  
Hayati M.A. Sholihat ◽  
Kemas Ahmad Zaini Thosin ◽  
Muljadi ◽  
Prijo Sardjono
Keyword(s):  
Magnetic Properties ◽  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Nickel Coating ◽  
Electrolyte Composition ◽  
Nickel Metal ◽  
Sem Images ◽  
Average Value ◽  
Immersion Corrosion ◽  
Bonded Magnet

Despite of its excellence magnetic quality, one of the critical properties of PrFeB based permanent magnet is a low corrosion resistance so it can be oxidized easily which can reduce its magnetic properties. In this study, Nickel coating has been performed for bonded PrFeB magnet by the electroplating method using Nickel-Watts bath-type as the electrolyte to improve the corrosion resistance. The varying amount of the electrolyte compounds used to have the optimized composition indicated by the corrosion resistance measurement. The solution composition used was NiSO4 (230-380 g/L), NiCl2 (30-60 g/L), and H3BO3 (30 and 45 g/L) with a fixed value of other parameters. Characterization used including the immersion corrosion test, microstructure analysis, and magnetic properties. Based on the corrosion rate measurement, the highest corrosion resistant of Nickel coated PrFeB magnet achieved from the electrolyte composition of NiSO4: NiCl2: H3BO3 = 380: 60: 30 g/L with a plating time and current density (J) of 60 minutes and 40 mA/cm2 respectively. The corrosion rate data showed that the Nickel metal coating can improve the corrosion resistance of bonded PrFeB magnet up to 29 times than of the substrate. The SEM images showed that the thickness of the Nickel coating on the optimum electrolyte composition was in average value of 35.1 µm. The overall samples has a magnetic remanence value (Br) reached ≥ 6 kG, so it has enough properties to be applied in devices such as generators and electric motors.

Filling the gap between the quantum and classical worlds of nanoscale magnetism: giant molecular aggregates based on paramagnetic 3d metal ions

2016 ◽  
Vol 45 (6) ◽  
pp. 1597-1628 ◽  
Author(s):  
Constantina Papatriantafyllopoulou ◽  
Eleni E. Moushi ◽  
George Christou ◽  
Anastasios J. Tasiopoulos
Keyword(s):  
Magnetic Properties ◽  
Magnetic Nanoparticles ◽  
Metal Ions ◽  
Crystal Structures ◽  
Magnetic Materials ◽  
Metal Clusters ◽  
Molecular Aggregates ◽  
Bottom Up ◽  
Paramagnetic Metal

The syntheses, structures and magnetic properties of giant molecular 3d and 3d/4f paramagnetic metal clusters are surveyed. Such complexes combine fascinating crystal structures, interesting magnetic properties and sizes comparable to those of classical magnetic nanoparticles providing a powerful bottom-up approach to nanoscale magnetic materials.

Synthesis, structure and magnetic properties of cyclic 3d metal clusters based on N–N single bonds of diacylhydrazine ligand

Polyhedron ◽  
2020 ◽  
Vol 191 ◽  
pp. 114801
Author(s):  
Qun Tang ◽  
Ze Cheng ◽  
Qingmei Lin ◽  
Jingwei Wu ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Metal Clusters ◽  
Single Bonds
Sign in / Sign up

Export Citation Format

Share Document