Composition dependence of the magnetic properties of bonded magnets of strontium hexaferrite-polyvinyl chloride

2000 ◽  
Vol 21 (5) ◽  
pp. 734-738 ◽  
Author(s):  
J. Matutes-Aquino ◽  
D. Ríos-Jara ◽  
O. Ayala-Valenzuela ◽  
P. Sifuentes Gallardo ◽  
L. F. Ramos De Valle ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Polyvinyl Chloride ◽  
Composition Dependence ◽  
Strontium Hexaferrite

Transformation of Structure, Magnetic Properties and Microwave Absorption Capability in Nd-Doped Strontium Hexaferrite

2020 ◽  
Vol 855 ◽  
pp. 255-260
Author(s):  
Mukhtar Effendi ◽  
Efi Solihah ◽  
Candra Kurniawan ◽  
Wahyu Tri Cahyanto ◽  
Wahyu Widanarto
Keyword(s):  
Magnetic Properties ◽  
Microwave Absorption ◽  
Solid State Reaction Method ◽  
Strontium Hexaferrite ◽  
Basic Material ◽  
X Ray Diffraction ◽  
Cell Parameters ◽  
Tetragonal Crystal ◽  
Capability Analysis ◽  
Natural Iron

The synthesize of Nd3+-strontium hexaferrite magnetic material by the solid-state reaction method has been successfully carried out. This study aims to determine the effect of Nd3+ on the structure, magnetic properties, and microwave absorption capability of the material. Preparation of (1-x)SrO:xNd2O3:6Fe2O3 where x = 0, 10, 20, and 30 mol% using basic material in the form of SrCO3 powder, Nd2O3 powder and Fe3O4 from natural iron sand. The characterization includes the X-Ray Diffraction (XRD) examination to determine the crystal structure, the Scanning Electron Microscope (SEM) for exploring the surface morphology, Vibrating Sample Magnetometer (VSM) for the magnetic properties investigation of material, and Vector Network Analyzer (VNA) for microwave absorption capability analysis. The XRD results show that the addition of Nd3+ doping increases the number of SrNdFeO4 phases. The phase has a tetragonal crystal system that has cell parameters a = b = 3.846 Å, and c = 12.594 Å. The magnetic properties of the material showed that the addition of Nd3+ decreased the saturation and remanence magnetization values, whereas the value of the coercivity field increased. Meanwhile, the best microwave absorption occurs in samples with the addition of Nd3+ as much as 0.3 mol, which results in a reflection loss value of -18.9 dB with a frequency bandwidth of 3.9 GHz.

Composition dependence of the structure and magnetic properties of Pr2(Fe,Co)14(C,B)-type nanocomposites

2005 ◽  
Vol 98 (4) ◽  
pp. 044315 ◽  
Author(s):  
A. H. Li ◽  
C. H. Chiu ◽  
H. W. Chang ◽  
W. C. Chang ◽  
W. Li
Keyword(s):  
Magnetic Properties ◽  
Composition Dependence
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