Room-Temperature Soft Magnetic Iron Oxide Nanocrystals: Synthesis, Characterization, and Size-Dependent Magnetic Properties

2008 ◽  
Vol 20 (15) ◽  
pp. 5029-5034 ◽  
Author(s):  
Yiwei Tan ◽  
Zhongbin Zhuang ◽  
Qing Peng ◽  
Yadong Li
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Room Temperature ◽  
Soft Magnetic ◽  
Magnetic Iron Oxide ◽  
Size Dependent

scholarly journals Properties of Silicone Rubber-Based Composites Reinforced with Few-Layer Graphene and Iron Oxide or Titanium Dioxide

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1550
Author(s):  
Vineet Kumar ◽  
Anuj Kumar ◽  
Minseok Song ◽  
Dong-Joo Lee ◽  
Sung-Soo Han ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Titanium Dioxide ◽  
Iron Oxide ◽  
Stress Relaxation ◽  
Silicone Rubber ◽  
Room Temperature ◽  
Relaxation Rates ◽  
Layer Graphene ◽  
Few Layer Graphene ◽  
Mechanical Actuation

The increasing demand for polymer composites with novel or improved properties requires novel fillers. To meet the challenges posed, nanofillers such as graphene, carbon nanotubes, and titanium dioxide (TiO2) have been used. In the present work, few-layer graphene (FLG) and iron oxide (Fe3O4) or TiO2 were used as fillers in a room-temperature-vulcanized (RTV) silicone rubber (SR) matrix. Composites were prepared by mixing RTV-SR with nanofillers and then kept for vulcanization at room temperature for 24 h. The RTV-SR composites obtained were characterized with respect to their mechanical, actuation, and magnetic properties. Fourier-transform infrared spectroscopy (FTIR) analysis was performed to investigate the composite raw materials and finished composites, and X-ray photoelectron spectroscopy (XPS) analysis was used to study composite surface elemental compositions. Results showed that mechanical properties were improved by adding fillers, and actuation displacements were dependent on the type of nanofiller used and the applied voltage. Magnetic stress-relaxation also increased with filler amount and stress-relaxation rates decreased when a magnetic field was applied parallel to the deformation axes. Thus, this study showed that the inclusion of iron oxide (Fe3O4) or TiO2 fillers in RTV-SR improves mechanical, actuation, and magnetic properties.

Magnetic iron oxide and the effect of grafting on the magnetic properties

2012 ◽  
Author(s):  
L. Truong Phuoc ◽  
J. Jouhannaud ◽  
G. Pourroy
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Magnetic Iron Oxide

Alloy Elements Added in Fe-6.5wt% Si Silicon Steel and their Effect on Ductility and Magnetic Properties

2013 ◽  
Vol 750-752 ◽  
pp. 426-430
Author(s):  
Zhao Yang Cheng ◽  
Jing Liu ◽  
Wen Si Chen ◽  
Guo Dong Sun ◽  
Xi Feng Lin ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Room Temperature ◽  
Silicon Steel ◽  
Soft Magnetic Properties ◽  
Action Mechanism ◽  
Soft Magnetic ◽  
Research Status

Fe-6.5wt%Si silicon steel has excellent soft magnetic properties, but its ductility in room temperature is near zero. A lot of researchers tried to improve the ductility by adding alloy elements. In this paper, we summarized the action mechanism and the content of these alloy elements according to the overseas and domestic research status. Al, B, Cr, RE, et al. improved the ductility of Fe-6.5wt%Si silicon steel in low temperature, but reduced its magnetic properties simultaneously. Ni, Ti, Mn, et al. improved the ductility of Fe-6.5wt%Si silicon steel inconspicuously.

Size-dependent magnetic properties of iron oxide nanoparticles

2016 ◽  
Vol 88 ◽  
pp. 24-30 ◽  
Author(s):  
Vitalii Patsula ◽  
Maksym Moskvin ◽  
Silvio Dutz ◽  
Daniel Horák
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Size Dependent

Cutoff Frequency Study on Nanocrystalline FeNbB Thin Films

2012 ◽  
Vol 465 ◽  
pp. 72-75
Author(s):  
Xiao Long Jiang ◽  
Y.J. Yao ◽  
M. Lai ◽  
K. Peng ◽  
Y.W. Du
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Room Temperature ◽  
Ion Beam ◽  
Cutoff Frequency ◽  
Magnetic Behavior ◽  
Soft Magnetic Properties ◽  
Ion Beam Sputtering ◽  
Soft Magnetic ◽  
Beam Sputtering

A series of nanocrystalline FeNbB films were fabricated using ion-beam sputtering technique from FeNbB target. Pieces of these films were annealed for 1 hour at various temperatures up to 5730C. Room temperature soft magnetic properties of these films were measured. The influence of microstructure on magnetic behavior in nanocrystalline FeNbB films is investigated in a series of specimens with different film’s thickness. For the sample 120nm and 5000C annealed, cutoff frequency was found to be 5E7 Hz, which has the μf0=5E10.

Tuning the Magnetic Properties of Iron Oxide Nanoparticles by a Room-Temperature Air-Atmosphere (RTAA) Co-Precipitation Method

2015 ◽  
Vol 15 (5) ◽  
pp. 3870-3878 ◽  
Author(s):  
S. Vikram ◽  
M. Dhakshnamoorthy ◽  
R. Vasanthakumari ◽  
A. R. Rajamani ◽  
Murali Rangarajan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Room Temperature ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Air Atmosphere ◽  
Co Precipitation

Size-Dependent Heating of Magnetic Iron Oxide Nanoparticles

ACS Nano ◽  
2017 ◽  
Vol 11 (7) ◽  
pp. 6808-6816 ◽  
Author(s):  
Sheng Tong ◽  
Christopher A. Quinto ◽  
Linlin Zhang ◽  
Priya Mohindra ◽  
Gang Bao
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Magnetic Iron Oxide ◽  
Size Dependent

Composite nanoplatelets combining soft-magnetic iron oxide with hard-magnetic barium hexaferrite

Nanoscale ◽  
2015 ◽  
Vol 7 (6) ◽  
pp. 2688-2697 ◽  
Author(s):  
D. Primc ◽  
D. Makovec
Keyword(s):  
Iron Oxide ◽  
Aqueous Suspension ◽  
Barium Hexaferrite ◽  
Composite Nanoparticles ◽  
Soft Magnetic ◽  
Magnetic Iron Oxide ◽  
Sandwich Type ◽  
Type Composite ◽  
Core Nanoparticles

Bi-magnetic, sandwich-type, composite nanoparticles were synthesized by the topotactic growth of a shell of soft-magnetic maghemite (γ-Fe2O3) on platelet core nanoparticles of hard-magnetic barium hexaferrite (BaFe12O19) in an aqueous suspension.

Magnetic Iron Oxide Nanotubes and Their Neuronal Applications

2010 ◽  
Author(s):  
Jining Xie ◽  
Linfeng Chen ◽  
Vijay K. Varadan ◽  
Malathi Srivastan
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Dorsal Root Ganglion ◽  
Dorsal Root ◽  
Neuronal Growth ◽  
Differential Effects ◽  
Magnetic Iron Oxide ◽  
Magnetic Nanotubes ◽  
Somatosensory Neurons ◽  
Structural And Magnetic Properties

Due to their unique structural and magnetic properties, magnetic nanotubes could be used in the field of neuroscience. In this study, hematite and maghemite nanotubes were synthesized and characterized. These magnetic nanotubes with coupled proteins such as albumin or laminin were used to investigate the interaction of nanotubes and their influence on somatosensory neurons from the dorsal root ganglion of rat. Our results indicated differential effects of magnetic nanotubes on neuronal growth based on the nanomaterial.

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