Raman Spectroscopy of Iron Oxide of Nanoparticles (Fe3O4)

Analog computing from recycling principle for next circular economy scenario has been studied with an iron oxide-coupled graphite/Fe–Si steel structure which was built using recycled waste materials, such as lead pencil and 3% Si steel (Fe–Si steel) foils. Proximity phenomena, such as disordered structure of iron oxide and magnetostriction-induced conduction, inside graphite lattice resulted in functional properties to advance analog architectures. Thermal oxidation was the synthesis route to produce iron oxide as coating film on Fe–Si steel foil, whose structure properties were validated by Raman spectroscopy where phase formation of hematite, α-Fe2O3, resulted as iron oxide thin-film. Three graphite layers with different compositions were also analyzed by Raman spectroscopy and used for studying electrical conduction in Fe–Si steel/α-Fe2O3/graphite structure from current–voltage plots at room temperature.

Download Full-text

Surface- and tip-enhanced Raman spectroscopy reveals spin-waves in iron oxide nanoparticles

Nanoscale ◽

10.1039/c5nr01277e ◽

2015 ◽

Vol 7 (21) ◽

pp. 9545-9551 ◽

Cited By ~ 23

Author(s):

Raul D. Rodriguez ◽

Evgeniya Sheremet ◽

Tanja Deckert-Gaudig ◽

Corinne Chaneac ◽

Michael Hietschold ◽

...

Keyword(s):

Raman Spectroscopy ◽

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Spin Waves ◽

Oxide Nanoparticles ◽

Tip Enhanced Raman Spectroscopy

Generating spin-waves by coupling photons with plasmon active tips and iron oxide nanoparticles.

Download Full-text

Vibrational properties of nanoparticles iron oxide by Raman spectroscopy

Modern Physics Letters B ◽

10.1142/s0217984921501256 ◽

2020 ◽

pp. 2150125

Author(s):

T. A. Darziyeva ◽

E. Sh. Alekperov ◽

S. H. Jabarov ◽

M. N. Mirzayev

Keyword(s):

Crystal Structure ◽

Raman Spectroscopy ◽

Iron Oxide ◽

Gaussian Function ◽

High Symmetry ◽

X Ray Diffraction ◽

Cubic Crystal ◽

Cubic Symmetry ◽

Structure Calculations ◽

Crystal Structure Calculations

The crystal structure and atomic dynamics of Fe3O4 nanoparticles have been studied. The crystal structure of iron oxide nanoparticles was determined by X-ray diffraction. The analysis showed that the crystal structure of [Formula: see text] 50–100 nm dimensional iron oxide corresponds to a high symmetry cubic crystal structure. Calculations have shown that there are four infrared active, five Raman active and seven hyper-Raman active modes in the space group Fd-3m with cubic symmetry. Four of these modes have been observed using Raman spectroscopy: 213, 271, 380 and 591 cm[Formula: see text]. The vibrational modes are interpreted by Gaussian function. It was found that these vibration modes correspond to the vibration of O–Fe–O bonds and iron-oxygen polyhedra.

Download Full-text

Tunable fabrication on iron oxide/Au/Ag nanostructures for surface enhanced Raman spectroscopy and magnetic enrichment

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2012.04.047 ◽

2012 ◽

Vol 378 (1) ◽

pp. 51-57 ◽

Cited By ~ 24

Author(s):

San-Yang Han ◽

Qing-Hua Guo ◽

Min-Min Xu ◽

Ya-Xian Yuan ◽

Li-Ming Shen ◽

...

Keyword(s):

Raman Spectroscopy ◽

Iron Oxide ◽

Surface Enhanced Raman Spectroscopy ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Magnetic Enrichment

Download Full-text

Defects Behavior in Disordered Iron Oxide Synthesized from Grain-Oriented Iron Foils

MRS Advances ◽

10.1557/adv.2019.35 ◽

2019 ◽

Vol 4 (1) ◽

pp. 51-59

Author(s):

Karen A. Neri ◽

José A. Andraca ◽

Ramón Peña ◽

Roberto Baca

Keyword(s):

Raman Spectroscopy ◽

Iron Oxide ◽

Low Temperatures ◽

Magnetic Ordering ◽

Structure Parameters ◽

Vibrational Modes ◽

Charge Effects ◽

Force Microscopy ◽

Atomic Force ◽

Discontinuous Growth

ABSTRACTDisordered iron oxide thin-films synthesized from grain-oriented iron foils were grown on both glass and Si (100) n-type substrates by vacuum evaporation followed by thermal oxidation at low temperatures. Defects such as vacancies formation has been studied using Atomic Force Microscopy (AFM) and Raman Spectroscopy. The kinetic of oxidation as a function of surface parameters was investigated by AFM studies. The vibrational modes (bands) connected with the vacancies formation and magnetic ordering into the iron oxide structure were validated by Raman spectroscopy. Space-charge effects can be influenced by discontinuous growth of iron oxide and correlated with their structure parameters. Finally, the disordered iron oxide will be useful for the next generation of adaptive oxide devices.

Download Full-text

Detection of mercury in spiked cosmetics by surface enhanced Raman spectroscopy using silver shelled iron oxide nanoparticles

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2021.129788 ◽

2021 ◽

pp. 129788

Author(s):

Zih-Ying Chen ◽

Akash Gupta ◽

Surojit Chattopadhyay

Keyword(s):

Raman Spectroscopy ◽

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Surface Enhanced Raman Spectroscopy ◽

Oxide Nanoparticles ◽

Surface Enhanced ◽

Surface Enhanced Raman

Download Full-text

Stress analysis of local blisters coupling Raman spectroscopy and X-ray diffraction. Correlation between experimental results and continuous damage modelling for buckling in an iron oxide/phosphated iron system

Applied Surface Science ◽

10.1016/j.apsusc.2010.08.048 ◽

2010 ◽

Vol 257 (4) ◽

pp. 1282-1288 ◽

Cited By ~ 2

Author(s):

B. Panicaud ◽

J.L. Grosseau-Poussard

Keyword(s):

Raman Spectroscopy ◽

Iron Oxide ◽

Stress Analysis ◽

Experimental Results ◽

X Ray Diffraction ◽

X Ray ◽

Damage Modelling

Download Full-text

Nanostructured Hematite Prepared by Thermal Oxidation of Iron

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.694.208 ◽

2016 ◽

Vol 694 ◽

pp. 208-212 ◽

Cited By ~ 1

Author(s):

Syahriza Ismail ◽

Nur Syafini Saad ◽

Jeeferie Abd Razak

Keyword(s):

Raman Spectroscopy ◽

Iron Oxide ◽

Thermal Oxidation ◽

Surface Diffusion ◽

Structural Properties ◽

Diffusion Mechanism ◽

Morphological Observation ◽

Oxide Nanowires ◽

Oxidation Period ◽

Heating Duration

This paper reports on the synthesis of iron oxide nanowires using thermal oxidation of iron. The α-Fe2O3 (hematite) and Fe3O4 (magnetite) were successfully formed using this method. The morphological observation was done through the FESEM, while the XRD, EDX and Raman spectroscopy were used to determine the physical and structural properties of the produced nanostructures. It was found that the peaks intensities relative to the hematite, increased with the extent of oxidation period. The growth and final morphology of hematite was significantly controlled by the heating duration. A surface diffusion mechanism for nano-hematite growth was then proposed to account for the growth phenomena of this nanostructured formation.

Download Full-text