'%3e%3cpath%20d='M29.5529%2025.4577C28.9763%2024.0918%2028.1395%2022.8511%2027.0891%2021.8047C26.0419%2020.7553%2024.8014%2019.9186%2023.4361%2019.3408C23.4239%2019.3347%2023.4116%2019.3317%2023.3994%2019.3256C25.3039%2017.95%2026.5419%2015.7092%2026.5419%2013.1812C26.5419%208.99325%2023.1487%205.6001%2018.9608%205.6001C14.7729%205.6001%2011.3797%208.99325%2011.3797%2013.1812C11.3797%2015.7092%2012.6177%2017.95%2014.5222%2019.3286C14.51%2019.3347%2014.4977%2019.3378%2014.4855%2019.3439C13.116%2019.9216%2011.8871%2020.7501%2010.8325%2021.8078C9.78311%2022.8549%208.94642%2024.0954%208.36866%2025.4607C7.80106%2026.7974%207.49494%2028.2304%207.46687%2029.6823C7.46606%2029.7149%207.47178%2029.7474%207.4837%2029.7778C7.49563%2029.8082%207.51351%2029.8358%207.5363%2029.8592C7.55909%2029.8826%207.58633%2029.9011%207.6164%2029.9138C7.64648%2029.9265%207.67879%2029.933%207.71142%2029.933H9.54556C9.68007%2029.933%209.78706%2029.826%209.79011%2029.6945C9.85125%2027.3346%2010.7989%2025.1245%2012.4741%2023.4493C14.2073%2021.716%2016.5092%2020.7623%2018.9608%2020.7623C21.4124%2020.7623%2023.7143%2021.716%2025.4475%2023.4493C27.1227%2025.1245%2028.0703%2027.3346%2028.1315%2029.6945C28.1345%2029.829%2028.2415%2029.933%2028.376%2029.933H30.2102C30.2428%2029.933%2030.2751%2029.9265%2030.3052%2029.9138C30.3353%2029.9011%2030.3625%2029.8826%2030.3853%2029.8592C30.4081%2029.8358%2030.426%2029.8082%2030.4379%2029.7778C30.4498%2029.7474%2030.4555%2029.7149%2030.4547%2029.6823C30.4242%2028.2211%2030.1215%2026.7997%2029.5529%2025.4577ZM18.9608%2018.4391C17.5577%2018.4391%2016.2371%2017.8919%2015.2436%2016.8984C14.2501%2015.9049%2013.7029%2014.5843%2013.7029%2013.1812C13.7029%2011.7781%2014.2501%2010.4575%2015.2436%209.46401C16.2371%208.47052%2017.5577%207.92334%2018.9608%207.92334C20.3639%207.92334%2021.6845%208.47052%2022.678%209.46401C23.6715%2010.4575%2024.2187%2011.7781%2024.2187%2013.1812C24.2187%2014.5843%2023.6715%2015.9049%2022.678%2016.8984C21.6845%2017.8919%2020.3639%2018.4391%2018.9608%2018.4391Z'%20fill='white'/%3e%3c/g%3e%3c/svg%3e)
Dr. Sergio Ferrari
Faculty of Engeneering, UBA, CONICET, Buenos Aires, Argentina
'%3e%3cpath%20d='M22.1642%2019.0924C21.7317%2018.068%2021.1041%2017.1375%2020.3163%2016.3527C19.5309%2015.5656%2018.6006%2014.9381%2017.5766%2014.5048C17.5674%2014.5002%2017.5582%2014.4979%2017.5491%2014.4933C18.9774%2013.4616%2019.9059%2011.7811%2019.9059%209.88504C19.9059%206.74408%2017.3611%204.19922%2014.2201%204.19922C11.0792%204.19922%208.53429%206.74408%208.53429%209.88504C8.53429%2011.7811%209.46282%2013.4616%2010.8912%2014.4956C10.882%2014.5002%2010.8728%2014.5025%2010.8636%2014.5071C9.83652%2014.9404%208.91487%2015.5617%208.1239%2016.355C7.33685%2017.1404%206.70933%2018.0707%206.276%2019.0947C5.85031%2020.0972%205.62072%2021.172%205.59967%2022.2609C5.59905%2022.2853%205.60335%2022.3097%205.61229%2022.3325C5.62123%2022.3553%205.63465%2022.376%205.65174%2022.3935C5.66883%2022.4111%205.68926%2022.425%205.71182%2022.4345C5.73437%2022.444%205.7586%2022.4489%205.78308%2022.4489H7.15868C7.25956%2022.4489%207.3398%2022.3686%207.3421%2022.2701C7.38795%2020.5001%208.09868%2018.8425%209.35506%2017.5861C10.655%2016.2862%2012.3814%2015.5709%2014.2201%2015.5709C16.0588%2015.5709%2017.7852%2016.2862%2019.0852%2017.5861C20.3415%2018.8425%2021.0523%2020.5001%2021.0981%2022.2701C21.1004%2022.3709%2021.1807%2022.4489%2021.2815%2022.4489H22.6571C22.6816%2022.4489%2022.7058%2022.444%2022.7284%2022.4345C22.751%2022.425%2022.7714%2022.4111%2022.7885%2022.3935C22.8056%2022.376%2022.819%2022.3553%2022.8279%2022.3325C22.8369%2022.3097%2022.8412%2022.2853%2022.8406%2022.2609C22.8176%2021.165%2022.5907%2020.0989%2022.1642%2019.0924ZM14.2201%2013.8284C13.1678%2013.8284%2012.1773%2013.418%2011.4322%2012.6729C10.6871%2011.9278%2010.2767%2010.9374%2010.2767%209.88504C10.2767%208.83271%2010.6871%207.84227%2011.4322%207.09715C12.1773%206.35204%2013.1678%205.94165%2014.2201%205.94165C15.2724%205.94165%2016.2629%206.35204%2017.008%207.09715C17.7531%207.84227%2018.1635%208.83271%2018.1635%209.88504C18.1635%2010.9374%2017.7531%2011.9278%2017.008%2012.6729C16.2629%2013.418%2015.2724%2013.8284%2014.2201%2013.8284Z'%20fill='%238590A2'/%3e%3c/g%3e%3c/svg%3e)
Co-authors
Following
Followers
Research Focus & Metrics
Explore full metrics on Scilit
Academic Career Length
23Years (2004-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 August 2014 in Materials Chemistry and Physics
Journal Article
VBV. Bilovol
V. Bilovol
SFSergio Ferrari
Sergio FerrariDDD. Derewnicka
D. Derewnicka
FSF.D. Saccone
F.D. Saccone
20 August 2015 in Journal of Applied Physics
Journal Article
FSFabio Daniel Fabio Saccone
Fabio Daniel Fabio SacconeSFSergio Ferrari
Sergio FerrariDED. Errandonea
D. Errandonea
FGF. Grinblat
F. GrinblatVBV. Bilovol
V. Bilovol
SAS. Agouram
S. AgouramWe report by the first time a high pressure X-ray diffraction and Raman spectroscopy study of cobalt ferrite (CoFe2O4) nanoparticles carried out at room temperature up to 17 GPa. In contrast with previous studies of nanoparticles, which proposed the transition pressure to be reduced from 20–27 GPa to 7.5–12.5 GPa (depending on particle size), we found that cobalt ferrite nanoparticles remain in the spinel structure up to the highest pressure covered by our experiments. In addition, we report the pressure dependence of the unit-cell parameter and Raman modes of the studied sample. We found that under quasi-hydrostatic conditions, the bulk modulus of the nanoparticles (B0 = 204 GPa) is considerably larger than the value previously reported for bulk CoFe2O4 (B0 = 172 GPa). In addition, when the pressure medium becomes non-hydrostatic and deviatoric stresses affect the experiments, there is a noticeable decrease of the compressibility of the studied sample (B0 = 284 GPa). After decompression, the cobalt ferrite lattice parameter does not revert to its initial value, evidencing a unit cell contraction after pressure was removed. Finally, Raman spectroscopy provides information on the pressure dependence of all Raman-active modes and evidences that cation inversion is enhanced by pressure under non-hydrostatic conditions, being this effect not fully reversible.
1 June 2016 in Solid State Sciences
Journal Article
SFSergio Ferrari
Sergio FerrariRKR.S. Kumar
R.S. KumarFGF. Grinblat
F. GrinblatJAJ.C. Aphesteguy
J.C. Aphesteguy
FSF.D. Saccone
F.D. Saccone
DED. Errandonea
D. Errandonea
4 December 2014 in IEEE Transactions on Magnetics
Journal Article
SFSergio Ferrari
Sergio FerrariJAJuan Carlos Aphesteguy
Juan Carlos Aphesteguy
FSFabio Daniel Saccone
Fabio Daniel Saccone
The structural and magnetic properties of Fe (3-x) Zn x O 4 (x: 0, 0.1, 0.2, 0.5, 1) nanoparticles, prepared by wet chemical method, have been studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Mössbauer spectroscopy, and magnetization measurements. The nanoparticles are polyhedrical-shaped with a narrow distribution in size as it was verified by SEM. By Rietveld analysis of XRD patterns, it was determined that the crystallites' sizes of Fe (3-x) Zn x O 4 in spinel structure is in the range of 30 to 50 nm. Hysteresis cycles, measured at different temperatures (300, 200, 100, 50, and 7 K), showed an increase in saturation, while temperature is diminished, as it is expected. All the samples, exhibited a high blocking temperature of ~350 K, as it was determined by zero field cooling-field cooling measurements. This fact, reveals their strongly interacting superparamagnetic nature. Real ac susceptibility increases with temperature, while the imaginary part has a maximum, which depends on frequency, and it is related to a critical temperature, which depends on composition. A Néel-Arrhenius dependence of frequency on the critical temperature was found for all the samples. We determined a minimum of the effective anisotropy for x=0.2.
1 February 2017 in Solid State Sciences
Journal Article
FGF. Grinblat
F. Grinblat
SFSergio Ferrari
Sergio FerrariLPLaura Pampillo
Laura PampilloFSF.D. Saccone
F.D. Saccone
DEDaniel Errandonea
Daniel Errandonea
Catalin Popescu +3
4 March 2010 in International Journal of Hydrogen Energy
Journal Article
LDLaura Damonte
Laura DamonteVDV. Donderis
V. DonderisSFSergio Ferrari
Sergio FerrariMMM. Meyer
M. MeyerJOJ. Orozco
J. OrozcoMHM.A. Hernández-Fenollosa
M.A. Hernández-FenollosaAbout Me
Skills:
Bachelor in Physics, PhD in Exact Sciences.
Research expertise in materials science, engineering, and quantum field theory.
Proficient in experimental techniques: diffractometry, PALS, optical & electrical characterization.
Strong analytical & problem-solving skills.
Effective collaboration & communication abilities.
Adaptable & committed to continuous learning.
Experienced in presenting research findings.
Expertise:
Material identification, cosmic ray interactions, magnetic properties of nanomaterials.
Structural behavior of nanocrystals, high-energy ball milling, electronic structure calculations.
X-ray diffraction, XANES, XPS analysis of materials.
Fundamentals of interactions, quantum field theory, hyperfine interactions.
Collaborative research across disciplines.
Passion for science education & didactics.
With a Bachelor and a Doctorate in in Physics, I am a dedicated Materials Scientist and Physicist. My research expertise spans materials science, engineering, and quantum field theory. I excel in various experimental techniques such as diffractometry, PALS, and optical & electrical characterization. Possessing strong analytical and problem-solving skills, I am an effective collaborator and communicator. Committed to continuous learning, I have presented my research findings at conferences. My expertise lies in material identification, cosmic ray interactions, and magnetic properties of nanomaterial