Dr. Diana Benea
'%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)
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Academic Career Length
31Years (1996-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 May 2017 in Applied Surface Science
Journal Article
10 July 2000 in Physical Review Letters
Journal Article
FWF. Wilhelm
F. Wilhelm
Panagiotis PoulopoulosGCG. Ceballos
G. CeballosHWH. Wende
H. WendeKBK. Baberschke
K. Baberschke
NBN. B. Brookes
N. B. Brookes +7
The magnetic moments in multilayers are thoroughly studied by combining experimental and ab initio theoretical techniques. SQUID magnetometry probes the samples' magnetizations. X-ray magnetic circular dichroism separates the contribution of Ni and Pt and provides a layer-resolved magnetic moment profile for the whole system. The results are compared to band-structure calculations. Induced Pt magnetic moments localized mostly at the interface are revealed. No magnetically “dead” Ni layers are found. The magnetization per Ni volume is slightly enhanced compared to bulk NiPt alloys.
1 November 2002 in Physical Review B
Journal Article
ASA. Scherz
A. Scherz
HWH. Wende
H. WendeKBK. Baberschke
K. Baberschke
JMJ. Minár
J. MinárDiana BeneaHEH. Ebert
H. Ebert
State-of-the-art x-ray magnetic circular dichroism measurements of V at the edges with an excellent signal-to-noise ratio are analyzed for a disordered alloy and a trilayer which were prepared in UHV and measured in situ on a Cu(100) single crystal. The absorption fine structure and the magnetic dichroism are discussed in detail with the help of ab initio theory. Several approaches known from literature to obtain magnetic ground-state properties from experimental spectra are tested for their validity.
1 March 2016 in Journal of Magnetism and Magnetic Materials
Journal Article
SMSever Mican
Sever Mican
Diana Benea
Razvan HirianRGRadu Gavrea
Radu Gavrea
OIOlivier Isnard
Olivier Isnard
MCMarin Coldea
Marin Coldea
+1
1 April 2001 in Journal of Applied Physics
Journal Article
Panagiotis PoulopoulosFWF. Wilhelm
F. Wilhelm
HWH. Wende
H. WendeGCG. Ceballos
G. CeballosKBK. Baberschke
K. Baberschke
NBN. B. Brookes
N. B. Brookes +5
X-ray magnetic circular dichroism measurements have been performed on Ni/Pt multilayers at a temperature of 10 K. The element specificity and shell selectivity of the technique allows us to probe Ni and Pt magnetic moments and to separate them into their constituent spin (μS) and orbital (μL) magnetic moments. The Ni magnetic moment at the interface is found to be reduced. However, magnetically “dead” Ni layers are unambiguously ruled out. Induced Pt magnetic moments up to about 0.3 μB/atom are reported. The results are compared to ab initio calculations and to previous experiments performed on NiPt alloys. The role of intermixing in the reduction of the Ni magnetic moments is also discussed.
29 March 2010 in Journal of Physics: Condensed Matter
Journal Article
SPS Polesya
S Polesya
SMS Mankovsky
S Mankovsky
Diana BeneaHEH Ebert
H Ebert
WBW Bensch
W Bensch
An investigation on the electronic and magnetic properties of NiAs-type CrTe and CrSe has been performed for ferromagnetic, antiferromagnetic and non-collinear spin configurations, using the spin-polarized relativistic KKR (Korringa-Kohn-Rostoker) band structure method. Calculated exchange coupling parameters, as well as the total energy calculated as a function of the tilt angle of magnetic moments, indicate the presence of a non-collinear spin structure in CrTe and CrSe. The existence of a non-collinear spin structure is also shown by Monte Carlo (MC) simulations used for studies on the temperature dependent magnetization. The results are compared with available results in the literature and are in satisfactory agreement with the experimental results.
About Me
Diana Benea obtained a PhD in 2004 from the Ludwig Maximillian University of Munich with the thesis “Theoretical description of magnetic Compton scattering and magnetic properties of Cr-chalcogenide compounds”. During the PhD stage, Dr. Benea was involved in the development of the SPRKKR calculation code of Prof. Dr. Hubert Ebert on the Compton scattering and positron annihilation routines. The competence domains of Dr. Benea include ab initio methods for describing the electronic structure of solids, with an emphasis on the ab initio methods for the description of the magnetic/spectroscopic properties of solids (magnetic Compton scattering, positron annihilation, X-ray magnetic dichroism, XPS spectroscopy). Currently, Dr. Benea’s research activity is focused on theoretical investigations of new permanent magnets with lower cost and high performance of R-M-A/R-M type (R, rare-earth element; M, transition metal; A, metalloid) and half-metal ferrimagnets with high spin polarization.