Roxana Radu
University of Hamburg
21 Papers
122 Citations
Roxana Radu is an academic researcher from University of Hamburg. The author has contributed to research in topics: Dielectric & Coercivity. The author has an hindex of 8, co-authored 18 publications.
Chat about Author
Papers
Investigation of point and extended defects in electron irradiated silicon—Dependence on the particle energy
TL;DR: In this article, the authors focus on the electrical performance of silicon diodes impaired by radiation induced active defects and show an increase of the introduction rates of both point defects and small clusters with increasing energy.
79
Magnetic properties of BaxSr1 xFe12O19 (x = 0.05-0.35) ferrites prepared by different methods
TL;DR: In this paper, the magnetic properties of hexagonal ferrites were investigated by magnetometry and Mossbauer spectroscopy in correlation to structural aspects, showing a relative high coercive field and remanent magnetization, as specific features for permanent magnet behavior.
69
Radiation damage in n-type silicon diodes after electron irradiation with energies between 1.5 MeV and 15 MeV
TL;DR: In this paper, the defect formation rate of point and cluster-related point defects was investigated as a function of electron energy, and it was shown that the ratio between cluster dominated and point defect formation increases with increasing electron energy.
25
Study of point- and cluster-defects in radiation-damaged silicon
Elena Maria Donegani,Eckhart Fretwurst,Erika Garutti,Robert Klanner,G. Lindstroem,Ioana Pintilie,Roxana Radu,Joern Schwandt +7 more
TL;DR: In this paper, a method based on SRH (Shockley-Read-Hall) statistics is introduced, which assumes that the ionisation energy of the defects in a cluster depends on the fraction of occupied traps.
Magnetic properties of BaNixFe12–xO19 (x=0.0–1.0) hexaferrites, synthesized by citrate–gel auto-combustion and sintered by conventional and spark plasma methods
Marin Cernea,Simona-Gabriela Greculeasa,Roxana Radu,Gheorghe Aldica,Paul Ganea,Vasile-Adrian Surdu,Eugenia Tanasa,Marius Christian Cioangher,Nicu Iacob,Ruxandra Maria Costescu +9 more
TL;DR: The influence of nickel substitutions on the local structure, dielectric and magnetic properties of Ba hexaferrites is investigated in this paper for use as rare earth free permanent magnets and microwave devices, especially.
19