Room-temperature magnetoresistance of one-dimensional magnetite (Fe3O4) nanostructures

2004 ◽  
Vol 853 ◽  
Author(s):  
Zuqin Liu ◽  
Daihua Zhang ◽  
Chongwu Zhou
Keyword(s):  
Magnetic Field ◽  
Wall Thickness ◽  
Room Temperature ◽  
Core Shell ◽  
Single Crystalline ◽  
One Dimensional ◽  
Magnetite Fe3o4 ◽  
Prepared Material ◽  
Different Temperatures ◽  
Shell Nanowires

ABSTRACTIn this paper, we present our recent studies on the synthesis and magnetoresistance of single crystalline Fe3O4 core-shell nanowires and nanotubes. Homogeneous Fe3O4 nanowires/tubes with controllable length, diameter and wall thickness were synthesized. The as-prepared material composition and stoichoimetry have been carefully examined and confirmed with a variety of characterization techniques including XRD, EDS, XPS, and TEM. Magnetoresistance under different temperatures was systemically studied. Up to 1.2% room temperature magnetoresistance was observed in the as synthesized nanowires/tubes under a magnetic field of B = 1.8 T.

scholarly journals Terahertz emission from GaAs-AlGaAs core-shell nanowires on Si (100) substrate: Effects of applied magnetic field and excitation wavelength

2013 ◽  
Vol 102 (6) ◽  
pp. 063101 ◽  
Author(s):  
Jasher John Ibanes ◽  
Ma. Herminia Balgos ◽  
Rafael Jaculbia ◽  
Arnel Salvador ◽  
Armando Somintac ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Excitation Wavelength ◽  
Core Shell ◽  
Terahertz Emission ◽  
Substrate Effects ◽  
Shell Nanowires

scholarly journals Robust topological phase in proximitized core–shell nanowires coupled to multiple superconductors

2018 ◽  
Vol 9 ◽  
pp. 1512-1526 ◽  
Author(s):  
Tudor D Stanescu ◽  
Anna Sitek ◽  
Andrei Manolescu
Keyword(s):  
Magnetic Field ◽  
Longitudinal Magnetic Field ◽  
Tight Binding ◽  
Core Shell ◽  
Topological Phase ◽  
Binding Model ◽  
Chemical Potentials ◽  
Topological Quantum ◽  
The Stability ◽  
Shell Nanowires

We consider core–shell nanowires with prismatic geometry contacted with two or more superconductors in the presence of a magnetic field applied parallel to the wire. In this geometry, the lowest energy states are localized on the outer edges of the shell, which strongly inhibits the orbital effects of the longitudinal magnetic field that are detrimental to Majorana physics. Using a tight-binding model of coupled parallel chains, we calculate the topological phase diagram of the hybrid system in the presence of non-vanishing transverse potentials and finite relative phases between the parent superconductors. We show that having finite relative phases strongly enhances the stability of the induced topological superconductivity over a significant range of chemical potentials and reduces the value of the critical field associated with the topological quantum phase transition.

One-dimensional core–shell cellulose-akaganeite hybrid nanocrystals: synthesis, characterization, and magnetic field induced self-assembly

RSC Advances ◽  
2014 ◽  
Vol 4 (94) ◽  
pp. 52542-52549 ◽  
Author(s):  
Mahdi Mashkour ◽  
Tsunehisa Kimura ◽  
Fumiko Kimura ◽  
Mozhdeh Mashkour ◽  
Mehdi Tajvidi
Keyword(s):  
Magnetic Field ◽  
Self Assembly ◽  
Core Shell ◽  
One Dimensional ◽  
Hybrid Nanocrystals

Magnetic field induced self-assembly of the synthesized one-dimensional core–shell cellulose-akaganeite hybrid nanocrystals (1D-CAHNCs).

Chalcogenide solution-mediated activation protocol for scalable and ultrafast synthesis of single-crystalline 1-D copper sulfide for supercapacitors

2019 ◽  
Vol 7 (6) ◽  
pp. 2529-2535 ◽  
Author(s):  
John Hong ◽  
Byung-Sung Kim ◽  
Seungmo Yang ◽  
A-Rang Jang ◽  
Young-Woo Lee ◽  
...  
Keyword(s):  
Copper Sulfide ◽  
Room Temperature ◽  
Single Crystalline ◽  
One Dimensional

One-dimensional Cu2S nanostructures via a facile and room-temperature sulfur activation for supercapacitors.

Carbon Nanotube/CdS Core–Shell Nanowires Prepared by a Simple Room-Temperature Chemical Reduction Method

2004 ◽  
Vol 16 (1) ◽  
pp. 84-87 ◽  
Author(s):  
J. Cao ◽  
J.-Z. Sun ◽  
J. Hong ◽  
H.-Y. Li ◽  
H.-Z. Chen ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Room Temperature ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Core Shell ◽  
Chemical Reduction Method ◽  
Shell Nanowires

Electron transport and conduction band structure of GaSb

1981 ◽  
Vol 59 (12) ◽  
pp. 1844-1850 ◽  
Author(s):  
Hyung Jae Lee ◽  
John C. Woolley
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Electrical Conductivity ◽  
Conduction Band ◽  
Room Temperature ◽  
Energy Gap ◽  
Band Model ◽  
Scattering Coefficients ◽  
Wide Range ◽  
Different Temperatures

Calculations have been made using the Fletcher and Butcher method in a three conduction band model to fit a wide range of experimental transport data for n-type samples of GaSb: viz. Hall coefficient and electrical conductivity as a function of temperature and as a function of pressure at room temperature, magnetoresistance as a function of magnetic field at different temperatures, and Nernst–Ettingshausen coefficients as a function of magnetic field. Various energy gap parameters and scattering coefficients have been taken as adjustable and values determined for these which give good fits to all of the experimental data. Values of mobility for each of the Γ, L, and X bands have then been calculated as a function of temperature.

Room temperature luminescent InGaAs/GaAs core-shell nanowires

2008 ◽  
Vol 93 (8) ◽  
pp. 083117 ◽  
Author(s):  
F. Jabeen ◽  
S Rubini ◽  
V Grillo ◽  
L. Felisari ◽  
F. Martelli
Keyword(s):  
Room Temperature ◽  
Core Shell ◽  
Shell Nanowires

Hydrogen generation enhanced by nano-forest structures

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 12953-12958 ◽  
Author(s):  
Keumyoung Seo ◽  
Taekyung Lim ◽  
Edmund M. Mills ◽  
Sangtae Kim ◽  
Sanghyun Ju
Keyword(s):  
Surface Area ◽  
Hierarchical Structure ◽  
Hydrogen Generation ◽  
Three Dimensional ◽  
Core Shell ◽  
Porous Disk ◽  
One Dimensional ◽  
Reaction Surface ◽  
Shell Nanowires

A hierarchical structure of one-dimensional CeO2/SnO2 core–shell nanowires on a three-dimensional porous disk (namely the “nanowire forest”) could maximize the reaction surface area and avoid coarsening during hydrogen generation.

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