scholarly journals From core–shell BaTiO3@MgO to nanostructured low dielectric loss ceramics by spark plasma sintering

2014 ◽  
Vol 2 (4) ◽  
pp. 683-690 ◽  
Author(s):  
Romain Berthelot ◽  
Brice Basly ◽  
Sonia Buffière ◽  
Jérôme Majimel ◽  
Geoffroy Chevallier ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Spark Plasma Sintering ◽  
Core Shell ◽  
Low Dielectric ◽  
Plasma Sintering ◽  
Spark Plasma

Spark Plasma Sintering of Core-Shell Structured (Mg,Zn)O Wrapped Ba1-xSrxTiO3 Nanopowder

2007 ◽  
Vol 334-335 ◽  
pp. 1037-1040 ◽  
Author(s):  
Wan Ping Chen ◽  
Hu Yong Tian ◽  
J.Q. Qi ◽  
Y. Wang ◽  
Z.J. Shen ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Core Shell ◽  
Plasma Sintering ◽  
Spark Plasma

Fabrication of high strength and plasticity of Zn-Mg composites with core–shell structure by spark plasma sintering

2020 ◽  
Vol 279 ◽  
pp. 128525
Author(s):  
Zeqin Cui ◽  
Mengda Luo ◽  
Yakai Zhang ◽  
Dianqing Gong ◽  
Wenxian Wang ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Shell Structure ◽  
High Strength ◽  
Core Shell ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Core Shell Structure ◽  
Strength And Plasticity

Colossal dielectric performance of pure barium titanate ceramics consolidated by spark plasma sintering

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75422-75429 ◽  
Author(s):  
X. Yang ◽  
D. Li ◽  
Z. H. Ren ◽  
R. G. Zeng ◽  
S. Y. Gong ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Barium Titanate ◽  
Dielectric Permittivity ◽  
Oxygen Vacancies ◽  
High Permittivity ◽  
Low Dielectric ◽  
Plasma Sintering ◽  
Dielectric Performance ◽  
Spark Plasma ◽  
Titanate Ceramics

The pure BaTiO3 nanoceramics have a high permittivity up to 6 × 104 and a low dielectric loss. The polaron dipoles configured by oxygen vacancies and Ti3+ cations within grains could contribute to the colossal dielectric permittivity of the ceramics.

scholarly journals Fe-Si/MnZn(Fe2O4)2 Core-shell Composites with Excellent Magnetic Properties by Mechanical Milling and Spark Plasma Sintering (SPS)

Metals ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 553 ◽  
Author(s):  
Liang Yan ◽  
Biao Yan
Keyword(s):  
Magnetic Properties ◽  
Spark Plasma Sintering ◽  
Mechanical Milling ◽  
Core Shell ◽  
Magnetic Composite ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Plasma Sintering ◽  
Soft Magnetic Composites ◽  
Spark Plasma

The Fe-Si/MnZn(Fe2O4)2 composite powders are synthetized by means of the mechanical milling, and Fe-Si/MnZn(Fe2O4)2 soft magnetic composites are prepared by spark plasma sintering (SPS). The impact of milling time on particle size, phase structure and magnetic properties of the investigative core-shell structure powders along with that of sintering temperature on microstructure and magnetic properties of FeSi-MnZn(Fe2O4)2 soft magnetic composite are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM). The experimental results demonstrate a layer of MnZn(Fe2O4)2 forming a coating on the surface of Fe-Si powder after mechanical milling, and the soft magnetic composites exhibiting excellent magnetic performance at 900 °C: 212.49 emu/g for saturation magnetization, with 6.89 Oe for coercivity, 3 × 10−4 Ω.m for electrical resistivity and stable amplitude permeability and low core loss over a wide frequency range. Therefore, SPS offers a convenient and swift way to enhance performance of soft magnetic composites using magnetic materials as insulting layer.

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