Preparation of hierarchical leaf-like cobalt and enhanced magnetic properties by a new low-temperature synthesis method

2016 ◽  
Vol 42 (10) ◽  
pp. 12092-12096 ◽  
Author(s):  
Xing Zhou ◽  
Wei Shen ◽  
Feng Cao ◽  
Jihang Li ◽  
Jiali Liu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Synthesis Method ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis

scholarly journals LOW-TEMPERATURE SYNTHESIS OF SUPERPARAMAGNETIC Zn0.8Ni0.2Fe2O4 FERRITE NANOPARTICLES

2018 ◽  
Vol 56 (1) ◽  
pp. 31
Author(s):  
Luong Thi Quynh Anh ◽  
Nguyen Van Dan ◽  
Do Minh Nghiep
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Oleic Acid ◽  
Low Temperature ◽  
Coercive Force ◽  
Saturation Magnetization ◽  
Ferrite Nanoparticles ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Co Precipitation

The crystalline nanoparticles of Ni0.2Zn0.8Fe2O4 ferrite were synthesized by chemical co-precipitation with precursor concentration of 0.1M, then modified by 0.25M solution of oleic acid in pentanol, finally heated at temperatures 120, 140, 160 and 180oC for 6h in autoclave. The XRD, EDS and TEM confirmed that all of samples are crystalline and their particle size are 6, 6.5, 7 and 8 nm. The magnetic properties showed that the coercive force, the remanence of samples are about zero, the saturation magnetization Ms has values from 14.20 to 27.12 emu/g.

A Novel Low Temperature Synthesis Method for Semiconductor Nanowires

2001 ◽  
Vol 676 ◽  
Author(s):  
Shashank Sharma ◽  
Mahendra K. Sunkara ◽  
Raul Miranda ◽  
Guoda Lian ◽  
Elizabeth C. Dickey
Keyword(s):  
Low Temperature ◽  
Synthesis Method ◽  
Nucleation And Growth ◽  
Semiconductor Nanowires ◽  
Nanometer Scale ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Novel Synthesis ◽  
Low Solubility ◽  
Carbon Nanowires

ABSTRACTWe present a novel synthesis technique to grow bulk quantities of semiconductor nanowires at temperatures less than 500 °C. Gallium is used as the liquid medium in a mechanism similar to vapor-liquid-solid (VLS). We demonstrated this low temperature technique with silicon and carbon nanowires. Gallium exhibits extremely low solubility for several elemental semiconductors. This property enables nucleation and growth of nanometer scale wires from large sized gallium droplets (>1 μm) eliminating the need for creation of quantum sized metal droplets.

A Novel, Low Temperature Synthesis Method of Dimethyl Ether Over Cu–Zn Catalyst Based on Self-Catalysis Effect of Methanol

2009 ◽  
Vol 52 (8) ◽  
pp. 1079-1084 ◽  
Author(s):  
Prasert Reubroycharoen ◽  
Suwattana Teppood ◽  
Tharapong Vitidsant ◽  
Chaiyan Chaiya ◽  
Suchada Butnark ◽  
...  
Keyword(s):  
Low Temperature ◽  
Dimethyl Ether ◽  
Synthesis Method ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis

Low Temperature Synthesis of MO2C/W2C Superlattices via Ultra-Thin Modulated Reactants

1996 ◽  
Vol 434 ◽  
Author(s):  
Christopher D. Johnson ◽  
David C. Johnson
Keyword(s):  
Low Temperature ◽  
Binary Systems ◽  
Reaction Pathway ◽  
Synthesis Method ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Initial Reactant ◽  
Repeat Units ◽  
Superlattice Period ◽  
Modulation Length

AbstractWe report here a synthesis method of preparing carbide superlattices using ultra-thin modulated reactants. Initial investigations into the synthesis of the binary systems, Mo2C and W2C using ultra-thin modulated reactants revealed that both can be formed at relatively low temperature(500 and 600°C respectively). DSC and XRD data suggested a two step reaction pathway involving interdiffusion of the initial modulated reactant followed by crystallization of the final product, if the modulation length is on the order of 10 Å. This information was used to form Mo2C/W2C superlattices using the structure of the ultra-thin modulated reactant to control the final superlattice period. Relatively large superlattice modulations were kinetically trapped by having several repeat units of each binary within the total repeat of the initial reactant. DSC and XRD data again are consistent with a two step reaction pathway leading to the formation of carbide superlattices.

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