6814 Suchergebnisse für: „“
Comparative characterization of differently grown ZnO single crystals by positron annihilation and Hall effect
High-quality ZnO single crystals of dimensions 10 × 10 × 0.3 mm3, grown either using a pressurized melt or a hydrothermal growth approach, have been investigated in their as-received state and are compared...
PublikationenEPR study on magnetic Zn1-xMnxO
Diluted magnetic semiconductors (DMS), systems formed by replacing cations of the host semiconductor material with transition-metal ions, are developed for further use in spintronics. A good combination...
PublikationenElectrical and magnetic properties of RE-doped ZnO thin films (RE = Gd, Nd)
Due to the small magnetic moments observed for 3d transition metals in ZnO [M. Diaconu, H. Schmidt, H. Hochmuth, M. Lorenz, G. Benndorf, J. Lenzner, D. Spemann, A. Setzer, K.W. Nielsen, P. Esquinazi, M....
PublikationenDynamic Magneto-Optical Imaging of Domains in Grain-Oriented Electrical Steel
Magneto-optical imaging with magneto-optical indicator films (MOIF) is a versatile method to characterize magnetic field distributions especially for material development and quality control. Magnetic...
PublikationenDeep defects generated in n-conducting ZnO : TM thin films
The ferromagnetism in highly transparent and intrinsically n-type conducting zinc oxide doped with 3d transition metals (TM), is predicted to be defect mediated. We investigate the generation of deep defects...
PublikationenEngineering interface-type resistive switching in BiFeO3 thin film switches by Ti implantation of bottom electrodes
BiFeO3 based MIM structures with Ti-implanted Pt bottom electrodes and Au top electrodes have been fabricated on Sapphire substrates. The resulting metal-insulator-metal (MIM) structures show bipolar resistive...
PublikationenKey concepts behind forming-free resistive switching incorporated with rectifying transport properties
This work reports the effect of Ti diffusion on the bipolar resistive switching in Au/BiFeO3/Pt/Ti capacitor-like structures. Polycrystalline BiFeO3 thin films are deposited by pulsed laser deposition...
PublikationenPractical guide for validated memristance measurements
Chua [IEEE Trans. Circuit Theory 18, 507–519 (1971)] predicted rather simple charge-flux curves for active and passive memristors (short for memory resistors) and presented active memristor circuit realizations...
PublikationenVector-magneto-optical generalized ellipsometry
We present the setup of a variable-angle vector-magneto-optical generalized ellipsometer (VMOGE) in the spectral range from 300 to 1100 nm using an octupole magnet, and demonstrate VMOGE measurements of...
PublikationenAnionic and cationic substitution in ZnO
In this contribution we review the impact of anionic and cationic substitutions on the electronic properties of bulk ZnO crystals, thin films and ZnO powders. p-type doping is discussed with focus on the...
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