Biography
Oct. 2006 |
Ph.D. in physics, University of Cambridge, UK |
Jan. 2001
|
Dipl.-Phys. (M.Sc. in physics), RWTH Aachen, GER |
Publications
Books:
- “Biomagnetism and Magnetic Biosystems based on Molecular Recognition Processes”, edited by Ionescu A, AIP Conf. Proc. 1025, Jun 2008 (ISBN 978-0735405479).
- “Magnetic Nanoparticles in Biosensing and Medicine”, edited by Ionescu A et al., Cambridge University Press, 14 Feb 2019, (ISBN 978-1107031098)
i) Refereed full papers
1.Valladares, LD; Ccamapaza, JL, Valencia-Bedregal, RA, Borja-Castro, LE, Velazquez-Garcia, J, Perera, DHN, Ionescu, A et al.
Physical and chemical characterization of sediments from an Andean River exposed to mining and agricultural activities: The Moquegua River, Peru
INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH, 37 (6) Art. No 780 OCT 31 2022
2. Pantousa, S, Mergia, K, Ionescu, A. et al.
Fe+ ion irradiation effects in Fe-10at%Cr films irradiated at 300 degrees C
NUCLEAR MATERIALS AND ENERGY, 30 Art. No. 101147 APR 23 2022
3. Lampen-Kelley, P; Madhogaria,R, Bingham, NS, Monteiro, PMS, Steinke, NJ, Ionescu, A et al.
Tablelike magnetocaloric effect and enhanced refrigerant capacity in EuO1-delta thin films
PHYSICAL REVIEW MATERIALS, 5 (9) Art. No. 094404 SEP 10 2021
4. Aboljadayel, ROM; Ionescu, A et al.
Growth and Characterisation Studies of Eu3O4 Thin Films Grown on Si/SiO2 and Graphene
NANOMATERIALS, 11 (6) Art No. 1598 JUL 5 2021
5. Liu, J, Singh, A, Liu, YYF, Ionescu, A, et al.,
Exchange Bias in Magnetic Topological Insulator Superlattices
NANO LETTER, 20 (7) Art. No. 5315JUL 8 2020
6. Mallick, K, Wagh, AA, Ionescu, A, et al.,
Magnetoresistance effects in Pt / EuO 1 - x
APPLIED PHYSICS LETTERS, 116 (20) MAY 18 2020
7. Mallick, K, Wagh, AA, Ionescu, A, et al.,
Role of spin mixing conductance in determining thermal spin pumping near the ferromagnetic phase transition in EuO1-x and La2NiMnO6
PHYSICAL REVIEW B, 100 (22) Art. No. 224403 DEC 2 2019
8. Wang, S.-J., Venkateshvaran, D, Mahani, MR, Chopra, U, McNellis, ER, Di Pietro, R, Schott, S, Wittmann, A, Schweicher, G, Cubukcu, M, Kang, K, Carey, R, Wagner, TJ, Siebrecht, JNM, Wong, DPGH, Jacobs, IE, Aboljadayel, RO, Ionescu, A, et al.,
Long spin diffusion lengths in doped conjugated polymers due to enhanced exchange coupling
NATURE ELECTRONICS, 2 Art. No. 98 MAR 2019
9. Ionescu, A, Llandro, J, and Ziebeck, KRA
Magnetism, Magnetic Materials and Nanoparticles
MAGNETIC NANOPARTICLES IN BIOSENSING AND MEDICINE, Pages: 1-51 Feb 2019
10. Singh, A, Kamboj, VS, Liu, J, Llandro, J, Duffy, LB, Senanayak, SP, Beere, HE, Ionescu, A, et al.,
Systematic Study of Ferromagnetism in CrxSb2-xTe3 Topological Insulator Thin Films using Electrical and Optical Techniques
SCIENTIFIC REPORTS, 8Art. No. 17024 NOV 16 2018
11. Zhou, Ke Xu, Ionescu, A, Wan, E, et al.,
Paramagnetism in Bacillus spores: Opportunities for novel biotechnological applications
BIOTECHNOLOGY AND BIOENGINEERING, 115 (4 ) Art. No. 955APR 2018
12. Khalid, N, Kim, J. -Y., Ionescu, A, et al.,
Structure and magnetic properties of an epitaxial Fe(110)/MgO(111)/GaN(0001) heterostructure
JOURNAL OF APPLIED PHYSICS, 129 (10 )Art. No. 103901 MAR 14 2018
13. Kim, J.-Y., Ionescu, A, Mansell, R, et al.,
Structural and magnetic properties of ultra-thin Fe films on metal-organic chemical vapour deposited GaN(0001)
JOURNAL OF APPLIED PHYSICS, (4)121Art. No. 043904 JAN 28 2017
14. De los Santos, VL, Bustamante, D, Ionescu, A, et al.,
Thermal oxidation of amorphous germanium thin films on SiO2 substrates
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 31 (12) Art. No 125017 DEC 2016
15. Monteiro, PMS, Baker, PJ, Hine, NDM, Steinke, N-J, Ionescu, A, et al.
Elevated Curie temperature and half-metallicity in the ferromagnetic semiconductor LaxEu1-xO
PHYSICAL REVIEW B, 92 (4): Art. No. 045202 JUL 9 2015
16. Vyas, KN, Love, DM, Ionescu, A, et al.
The Scanning TMR Microscope for Biosensor Applications
BIOSENSORS, 5 (2), Art. No. 172 2015 APR 02 2015
17. De Los Santos, VL, Ionescu, A, Holmes, S, et al.
Characterization of Ni thin films following thermal oxidation in air
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 32: Art. No. 051808 SEP 23 2014
18. Cooper, JFK, Ionescu, A, Langford, RM, et al.
Core/shell magnetism in NiO nanoparticles
JOURNAL OF APPLIED PHYSICS, 114 (8): Art. No. 083906 AUG 28 2013
19. Monteiro, PMS, Baker, PJ, Ionescu, A, et al.
Spatially Homogeneous Ferromagnetism below the Enhanced Curie Temperature in EuO1-x Thin Films
PHYSICAL REVIEW LETTERS, 110 (21): Art. No. 217208 MAY 23 2013
20. Chin, S-L, Ionescu, A, Reeve, RM, et al.
Ab-initio calculation of C and CO adsorption on the Co (110) surface
SURFACE SCIENCE, 608: Art. No. 282 FEB 2013
21. Edgcombe, CJ, Ionescu, A, Loudon, JC, et al.
Characterisation of ferromagnetic rings for Zernike phase plates using the Aharonov-Bohm effect
ULTRAMICROSCOPY, 120: Art. No. 78 SEP 2012
22. Reeve, RM., Chin, S-L, Kopper, K-P, Ionescu, A, and Barnes CHW.
Experimental and theoretical study of electron-beam-induced spin-reorientation transition reversal in the CO/Co(110) system
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 45: Art. No. 275003 JUL 11 2012
23. Reeve, RM, Chin, S-L, Ionescu, A, et al.
Modification of the secondary-electron spin polarization in Co/Cu(110) films via gaseous adsorbates
PHYSICAL REVIEW B, 84: Art. No. 184431 NOV 28 2011
24. Barbagallo, M, Stollenwerk, T, Kroha, J, Steinke, NJ, Hine, NDM, Cooper, JFK, Barnes, CHW, Ionescu, A, et al.
Thickness-dependent magnetic properties of oxygen-deficient EuO
PHYSICAL REVIEW B, 84: Art. No. 075219 AUG 26 2011
25. Thomas, KR, Ionescu, A, Gwyther, J, et al.
Magnetic properties of ceramics from the pyrolysis of Polyferrocenylsilane films doped with palladium
JOURNAL OF APPLIED PHYSICS, 109 (7): Art. No. 073904 APR 1 2011
26. Ionescu, A, Darton, NJ, Vyas, KN, and Llandro, J. (Invited)
Detection of endogenous magnetic nanoparticles with a TMR sensor
PHILOSOPHICAL TRANSACTIONS A, 368: Art. No. 4371 AUG 21 2010
27. Llandro, J, Palfreyman, JJ, Ionescu, A, and Barnes, CHW. (Invited)
Magnetic biosensor technologies for medical applications: a review
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, 48 (10): Art. No.977
OCT 2010: DOI 10.1007/s11517-010-0649-3
28. Kurebayashi, H, Trypiniotis, T, Lee, K, Moutafis, C, Easton, S, Ionescu, A, et al.
Numerical calculation model for spin-dependent transport of photoexcited electrons across Fe/GaAs(001) interfaces
J. PHYS. D: APPLIED PHYSICS, 43: Art. No. 305001 JUL 13 2010
29. Barbagallo, M, Hine, NDM, Cooper, JFK, Steinke, NJ, Ionescu, A, et al.
Experimental and theoretical analysis of magnetic moment enhancement in oxygen-deficient EuO
PHYSICAL REVIEW B, 81 (23): Art. No. 235216 JUN 29 2010
30. Rungsawang, R, da Silva, J, Wu, CP, Sivaniah, E, Ionescu, A, et al.
Magnetically Induced Pattern Formation in Phase Separating Polymer-Solvent-Nanoparticle Mixtures
PHYSICAL REVIEW LETTERS, 104 (25): Art. No. 255703 JUN 22 2010
31. Easton, S, Ionescu, A, et al.
The initial growth mode of Co on Cu(311)
JOURNAL OF APPLIED PHYSICS, 107 (9): Art. No. 09E101 MAY 1 2010
32. Easton, S, Kupper, D, Ionescu, A, et al.
Spin-engineering in the Co75Fe25/Cu(110) system
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 322 (17): Art. No. 2493 MAR 19 2010
33. Kurebayashi, H, Trypiniotis, T, Lee, K, Easton, S, Ionescu, A, et al.
Electrical determination of the spin relaxation time of photoexcited electrons in GaAs
APPLIED PHYSICS LETTERS, 96 (2): Art. No. 022505 JAN 11 2010
34. De Los Santos, VL, Lee, D, Seo, J, Leon, FL, Bustamante, DA, Suzuki, S, Majima, Y, Mitrelias, T, Ionescu, A, and Barnes, CHW.
Crystallization and surface morphology of Au/SiO2 thin films following furnace and flame annealing
SURFACE SCIENCE, 603 (19): Art. No. 2978 OCT 1 2009
35. Hong, B, Hayward, TJ, Jeong, J-R, Cooper, JFK, Palfreyman, JJ, Mitrelias, T, Ionescu, A, et al.
Design and fabrication of SU8 encapsulated digital magnetic carriers for high throughput biological assays
JOURNAL OF APPLIED PHYSICS, 105 (3): Art. No. 034701 FEB 1 2009
36. Darton, NJ, Sederman, AJ, Ionescu, A, et al.
Manipulation and tracking of superparamagnetic nanoparticles using MRI
NANOTECHNOLOGY, 19 (39): Art. No. 395102 OCT 1 2008
37. Laloe, JB, Ionescu, A, et al.
Effect of MgO barriers on ferromagnetic metallic layers studied by polarized neutron reflectivity
APPLIED PHYSICS LETTERS, 93 (1): Art. No. 012505 JUL 7 2008
38. Kupper, D, Ionescu, A, et al.
Distinct evolution of magnetism and anisotropy of ultrathin CoFe and Co films on Cu(110) upon gas adsorption
JOURNAL OF APPLIED PHYSICS, 103 (7): Art. No. 07C911 APR 1 2008
39. Laloe, JB, Ionescu, A, et al.
Control of epitaxy-induced magnetocrystalline anisotropy in a molecular beam epitaxy-grown Co/MgO/Fe/MgO(100) pseudo-spin-valve
APPLIED PHYSICS LETTERS, 92 (8): Art. No. 082505 FEB 25 2008
40. Gillingham, DM, Tselepi, M, Ionescu, A, et al.
Smoothening of ultrathin Fe films grown on GaAs(100) observed by scanning tunneling microscopy and Brillouin light scattering
PHYSICAL REVIEW B, 76 (21): Art. No. 214412 DEC 2007
41. Kurebayashi, H, Steinmuller, SJ, Laloe, JB, Trypiniotis, T, Easton, S, Ionescu, A, et al.
Initial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interface
APPLIED PHYSICS LETTERS, 91 (10): Art. No. 102114 SEP 3 2007
42. Ionescu, A, Tselepi, M, Gillingham, DM, et al.
Submonolayer growth of Fe on a GaAs(100)-2x6 reconstructed surface
i) PHYSICAL REVIEW B, 72 (12): Art. No. 125404 SEP 2005 and ii) Virtual Journal of
Nanoscale Science & Technology 12 (11): SEP 12 2005
43. Vaz, CAF; Ionescu, A; Trypiniotis, T, et al.
Magnetic properties of Fe/AlOx/GaAs(001) structures
JOURNAL OF APPLIED PHYSICS, 97 (10): Art. No. 10J119 Part 3 MAY 15 2005
44. Ionescu, A, Vaz, CAF, Trypiniotis, T, et al.
Structural, magnetic, electronic, and spin transport properties of epitaxial Fe3Si/GaAs(001)
i) PHYSICAL REVIEW B, 71 (9): Art. No. 094401 MAR 2005 and ii) Virtual Journal of
Nanoscale Science & Technology 11 (10): MAR 14 2005
45. Choi, KY, Lemmens, P, Pommer, J; Ionescu, A, et al.
Random magnetism in the frustrated triangular spin ladder KCu5V3O13
PHYSICAL REVIEW B, 70 (17): Art. No. 174417 NOV 2004
46. Moore, TA, Ionescu, A, Bland, JAC
Field sweep rate dependence of domain-wall speed distributions in a thin Ni80Fe20 film
JOURNAL OF APPLIED PHYSICS, 96 (11): 6546-6549 DEC 1 2004
47. Steinmuller, SJ, Tselepi, M, Wastlbauer, G, Strom, V, Gillingham, DM, Ionescu, A, et al.
Spin dynamics in an ultrathin Fe film in the vicinity of the superparamagnetic/ferromagnetic phase transition
PHYSICAL REVIEW B, 70 (2): Art. No. 024420 JUL 2004
48. Kataev, V, Pommer, J, Choi, KY, Lemmens, P, Ionescu, A, et al.
Magnetic exchange in a low-dimensional complex oxide ((Cu, Zn)(2)V2O7
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272: 933-934 Part 2 Sp. Iss. SI MAY 2004
49. Taniyama, T, Wastlbauer, G, Ionescu, A, et al.
Spin-selective transport through Fe/AlOx/GaAs(100) interfaces under optical spin orientation
PHYSICAL REVIEW B, 68 (13): Art. No. 134430 OCT 1 2003
50. Bland, JAC, Steinmuller, SJ, Hirohata, A, Cho, WS, Xu, YB, Guertler, CM, Wastlbauer, G, Ionescu, A, et al.
Electron spin filtering in ferromagnet/semiconductor heterostructures
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 36 (18): 2204-2210 SEP 21 2003
51. Andresen, SE, Steinmuller, SJ, Ionescu, A, et al.
Role of electron tunneling in spin filtering at ferromagnet/semiconductor interfaces
PHYSICAL REVIEW B, 68 (7): Art. No. 073303 AUG 15 2003
52. Pommer, J, Kataev, V, Choi, KY, Lemmens, P, Ionescu, A, et al.
Interplay between structure and magnetism in the spin-chain compound (Cu,Zn)(2)V2O7
PHYSICAL REVIEW B, 67 (21): Art. No. 214410 JUN 1 2003
53. Klauss, HH, Lemmens, P, Birke, M, Baabe, D, Mienert, D, Litterst,FJ, Amato, A, Pommer, J, Ionescu, A, et al.
Spin dynamics in the quantum spin system KCu5V3O13
PHYSICA B-CONDENSED MATTER, 326 (1-4): 436-439 FEB 2003
54. Lemmens, P, Choi, KY, Ionescu, A, et al.
Low energy singlets in the excitation spectrum of the spin tetrahedra system Cu2Te2O5Br2
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 63 (6-8): 1115-1117 JUN-AUG 2002
55. Sparta, K, Redhammer, GJ, Roussel, P, Heger, G, Roth, G, Lemmens, P, Ionescu, A, et al.
Structural phase transition in the 2D spin dimer compound SrCu2(BO3)(2)
EUROPEAN PHYSICAL JOURNAL B, 19 (4): 507-516 FEB 2001
ii) Refereed conference publications
1. Kamboj, VS, Singh, A, Jakob, L, Duffy, LB, Idros, N, Senanayak, SP, Ionescu, A, et al.,
Temperature dependence of the ferromagnetic response in CrxSb2-xTe3 topological insulator thin films investigated using terahertz spectroscopy and magneto-transport
Proceedings of SPIE, 10917Art. No. UNSP 109171T FEB 2019
2. Reeve, R, Chin, SL, Kopper, KP, Ionescu, A and Barnes, CHW.
Electron Beam Tuning of the Magnetic Anisotropy in Co/Cu(110) Films
IEEE TRANSACTIONS ON MAGNETICS, 47 (6): 1554-155 JUN 2011
3. Hong, B, Jeong, J-R, Llandro, J, Hayward, TJ, Ionescu, A, et al.
High Throughput Biological Analysis Using Multi-bit Magnetic Digital Planar Tags
AIP Conf. Proc. “BIOMAGNETISM AND MAGNETIC BIOSYSTEMS BASED ON
MOLECULAR RECOGNITION PROCESSES”, edited by Bland JAC and Ionescu A, 1025: Art. No. 74 JUN 19 2008
4. Barbagallo, M, van Belle, F, Ionescu, A, et al.
Digitally Encoded Exchange Biased Multilayers
AIP Conf. Proc. “BIOMAGNETISM AND MAGNETIC BIOSYSTEMS BASED ON
MOLECULAR RECOGNITION PROCESSES”, edited by Bland JAC and Ionescu A, 1025: Art. No. 52 JUN 19 2008
5. Laloe, JB, van Belle, F, Ionescu, A, et al.
Room-temperate study of the magnetic moment of ultrathin Fe films on GaAs(100) and InAs(100)
IEEE TRANSACTIONS ON MAGNETICS, 42 (10): 2933-2935 OCT 2006
6. Ionescu, A, Vaz, CAF, Trypiniotis, T, et al.
Magnetic and structural properties of stoichiometric thin Fe3Si/GaAs(001) films
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 286: 72-76 Sp. Iss. SI FEB 1 2005
Teaching and Supervisions
2022 - present |
Graduate student lecture course “Introduction to Electrical and Magnetic Charactersation Techniques” at the Materials Science and Metallurgy department. |
2019 - present |
Head of Class (Part 1B): Michaelmas: Electronics; Lent: Optics and Waves. |
2018 - present |
Head of Class (Part 2): Michaelmas/Lent: Semiconducting Quantum Devices. |
2011 - 2018 |
Supervisor for A-level work experience placements for the Educational Outreach office at the Cavendish. |
2008 - 2017 |
Inviting Ph.D. students as national and international experts to present their work as the TFM's Group Seminar organiser. |
2008 - present |
Examiner for Part 3 project, 1'st year (CPGS) and Ph.D. viva at the Cavendish. Member of the group's student and post-doctoral position interview panel. |
2008 - 2017 |
Graduate student lecture course “Introduction to Thin Film and Nanomagnetism” at the Cavendish Laboratory. |
2005 - present |
Training and co-supervision of Master and Ph.D. students (~32 students) including peparing poster presentations and talks, proof reading submitted articles and theses. |
2004 - 2005 |
Supervisor Part II Natural Science Tripos on Solid State Physics. |
2003 - present |
Supervisor Part II Natural Science Tripos on Particle and Nuclear Physics. |
2002 - 2019 |
Demonstrator (since 2013 super demonstrator) for Part 1B Practical Work on Electronics, Optics and waves, Cavendish. |
2001 - 2002 |
Advanced Physics Praktikum A (4th year) on electronics, RWTH-Aachen. |