scholarly journals Probing bismuth ferrite nanoparticles by hard x-ray photoemission: Anomalous occurrence of metallic bismuth

2014 ◽  
Vol 105 (10) ◽  
pp. 102910 ◽  
Author(s):  
Smita Chaturvedi ◽  
Indranil Sarkar ◽  
Mandar M. Shirolkar ◽  
U-Ser Jeng ◽  
Yi-Qi Yeh ◽  
...  
Keyword(s):  
Bismuth Ferrite ◽  
Ferrite Nanoparticles ◽  
X Ray ◽  
Metallic Bismuth

scholarly journals Characterization of ferrite nanoparticles for preparation of biocomposites

2017 ◽  
Vol 8 ◽  
pp. 1257-1265 ◽  
Author(s):  
Urszula Klekotka ◽  
Magdalena Rogowska ◽  
Dariusz Satuła ◽  
Beata Kalska-Szostko
Keyword(s):  
Chemical Method ◽  
Ferrite Nanoparticles ◽  
Chemical Activity ◽  
Nominal Composition ◽  
X Ray Diffraction ◽  
Wet Chemical Method ◽  
X Ray ◽  
Transmission Electron ◽  
Wet Chemical

Ferrite nanoparticles with nominal composition Me0.5Fe2.5O4 (Me = Co, Fe, Ni or Mn) have been successfully prepared by the wet chemical method. The obtained particles have a mean diameter of 11–16 ± 2 nm and were modified to improve their magnetic properties and chemical activity. The surface of the pristine nanoparticles was functionalized afterwards with –COOH and –NH2 groups to obtain a bioactive layer. To achieve our goal, two different modification approaches were realized. In the first one, glutaraldehyde was attached to the nanoparticles as a linker. In the second one, direct bonding of such nanoparticles with a bioparticle was studied. In subsequent steps, the nanoparticles were immobilized with enzymes such as albumin, glucose oxidase, lipase and trypsin as a test bioparticles. The characterization of the nanoparticles was acheived by transmission electron microscopy, X-ray diffraction, energy dispersive X-ray and Mössbauer spectroscopy. The effect of the obtained biocomposites was monitored by Fourier transform infrared spectroscopy. The obtained results show that in some cases the use of glutaraldehyde was crucial (albumin).

Electronic structure of bismuth ferrite and hematite single crystals: X-ray photoelectron study and calculation

2011 ◽  
Vol 53 (1) ◽  
pp. 41-47 ◽  
Author(s):  
A. T. Kozakov ◽  
K. A. Guglev ◽  
V. V. Ilyasov ◽  
I. V. Ershov ◽  
A. V. Nikol’skii ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Single Crystals ◽  
Bismuth Ferrite ◽  
X Ray ◽  
Photoelectron Study

Effect of Yb substitution on room temperature magnetic and dielectric properties of bismuth ferrite nanoparticles

2016 ◽  
Vol 120 (13) ◽  
pp. 134304 ◽  
Author(s):  
K. P. Remya ◽  
S. Amirthapandian ◽  
M. Manivel Raja ◽  
C. Viswanathan ◽  
N. Ponpandian
Keyword(s):  
Dielectric Properties ◽  
Room Temperature ◽  
Bismuth Ferrite ◽  
Ferrite Nanoparticles ◽  
Magnetic And Dielectric Properties

scholarly journals In-situ high-pressure x-ray diffraction study of zinc ferrite nanoparticles

2016 ◽  
Vol 56 ◽  
pp. 68-72 ◽  
Author(s):  
S. Ferrari ◽  
R.S. Kumar ◽  
F. Grinblat ◽  
J.C. Aphesteguy ◽  
F.D. Saccone ◽  
...  
Keyword(s):  
High Pressure ◽  
Diffraction Study ◽  
Zinc Ferrite ◽  
Ferrite Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray

Effects of size and oxygen annealing on the multiferroic behavior of bismuth ferrite nanoparticles

2012 ◽  
Vol 14 (12) ◽  
Author(s):  
Alina Manzoor ◽  
S. K. Hasanain ◽  
A. Mumtaz ◽  
M. F. Bertino ◽  
L. Franzel
Keyword(s):  
Bismuth Ferrite ◽  
Ferrite Nanoparticles ◽  
Oxygen Annealing

Cation distribution of Mn-Zn ferrite nanoparticles using pair distribution function analysis and resonant X-ray scattering

2018 ◽  
Vol 124 (5) ◽  
pp. 56001 ◽  
Author(s):  
Rodrigo U. Ichikawa ◽  
João P. R. L. L. Parra ◽  
Oriol Vallcorba ◽  
Inma Peral ◽  
Walter K. Yoshito ◽  
...  
Keyword(s):  
Distribution Function ◽  
Cation Distribution ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Ferrite Nanoparticles ◽  
X Ray ◽  
X Ray Scattering ◽  
Zn Ferrite ◽  
Ray Scattering

scholarly journals Layer-by-Layer Self-Assembled Ferrite Multilayer Nanofilms for Microwave Absorption

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Jiwoong Heo ◽  
Daheui Choi ◽  
Jinkee Hong
Keyword(s):  
Electron Microscopy ◽  
Self Assembly ◽  
Precursor Solution ◽  
Ferrite Nanoparticles ◽  
Energy Dispersive ◽  
Layer By Layer ◽  
X Ray Diffraction ◽  
Simple Method ◽  
X Ray ◽  
Scanning Electron

We demonstrate a simple method for fabricating multilayer thin films containing ferrite (Co0.5Zn0.5Fe2O4) nanoparticles, using layer-by-layer (LbL) self-assembly. These films have microwave absorbing properties for possible radar absorbing and stealth applications. To demonstrate incorporation of inorganic ferrite nanoparticles into an electrostatic-interaction-based LbL self-assembly, we fabricated two types of films: (1) a blended three-component LbL film consisting of a sequential poly(acrylic acid)/oleic acid-ferrite blend layer and a poly(allylamine hydrochloride) layer and (2) a tetralayer LbL film consisting of sequential poly(diallyldimethylammonium chloride), poly(sodium-4-sulfonate), bPEI-ferrite, and poly(sodium-4-sulfonate) layers. We compared surface morphologies, thicknesses, and packing density of the two types of ferrite multilayer film. Ferrite nanoparticles (Co0.5Zn0.5Fe2O4) were prepared via a coprecipitation method from an aqueous precursor solution. The structure and composition of the ferrite nanoparticles were characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, transmission electron microscopy, and scanning electron microscopy. X-ray diffraction patterns of ferrite nanoparticles indicated a cubic spinel structure, and energy dispersive X-ray spectroscopy revealed their composition. Thickness growth and surface morphology were measured using a profilometer, atomic force microscope, and scanning electron microscope.

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