A5054730614- Carbon Nanotubes in Composites
- Force Microscopy Techniques and Applications
- Magnetic properties of thin films
- Mechanical and Optical Resonators
- Graphene research and applications
- Acoustic Wave Resonator Technologies
- Diamond and Carbon-based Materials Research
- Quantum and electron transport phenomena
- Advanced Sensor and Energy Harvesting Materials
- Soil Moisture and Remote Sensing
- Electronic Packaging and Soldering Technologies
- Aluminum Alloys Composites Properties
- Microfluidic and Bio-sensing Technologies
- Chemical and Physical Properties of Materials
- Magnetic Properties of Alloys
- Icing and De-icing Technologies
- Microstructure and mechanical properties
- Copper Interconnects and Reliability
- Advancements in Battery Materials
- Molecular Junctions and Nanostructures
- Nanotechnology research and applications
Leibniz Institute for Solid State and Materials Research
2008-2024
Technische Universität Dresden
2019
Leibniz Association
2010-2011
We present a novel ultrahigh stability sensor for quantitative magnetic force microscopy (MFM) based on an iron filled carbon nanotube. In contrast to the complex structure of conventional MFM probes, this constitutes nanomagnet with defined properties. The long nanowire can be regarded as extended dipole which only monopole close sample surface is involved in imaging process. demonstrate its potential high resolution imaging. Moreover, we easy routine determine moment and prove that...
Abstract Microacoustic wave devices are essential components in the radio frequency (RF) electronics and microelectromechanical systems (MEMS) industry with increasing impact various sensing actuation applications. Reliable smart operation of acoustic at low costs will cause a crucial advancement. Herein, this study presents enablement temperature mechanical capabilities Rayleigh‐mode standing surface (sSAW) chip device by harnessing an shear‐thickness dominant (SD) using same set...
Iron-filled carbon nanotubes (Fe-CNTs) were used to prepare probes for magnetic force microscopy (MFM) by attaching them the tips of conventional atomic cantilevers. An optimized chemical vapor deposition process, employing a two stage furnace and ferrocene as precursor, supplied homogeneously filled Fe-CNTs required MFM probes. These can be regarded cylindrically shaped single-domain nanomagnets that are protected from oxidation shell. Carbon known possess both great mechanical stability...
Single crystal iron carbide nanowires contained in multiwalled carbon nanotubes have been prepared by aerosol-based thermal chemical vapor deposition. Investigations transmission electron microscopy reveal the crystallographic [010] axis of orthorhombic Fe3C to be predominantly aligned along nanotube axis. Despite high aspect ratio nanowires, magnetic force measurements imply single domain behavior with easy perpendicular wire In agreement structural results, these findings show that is...
The magnetization reversal and switching behavior of an individual Fe-filled carbon nanotube has been measured using vibrating cantilever magnetometry. We report measurements the magnetic field at which 25 nanometer diameter iron core inside reverses. fields occurs, characterized by exceptionally narrow distribution (σH≤1 G 6.3 K), are determined thermally activated excitation over a dependent barrier. high precision achievable virtue measuring nanowires allows detailed quantitative...
The magnetic properties of single domain α-Fe and Fe3C nanowires encapsulated within Multi Walled Carbon Nanotubes (MWNT) are investigated with a Magnetic Force Microscope (MFM). wires formed during the Chemical Vapour Deposition growth process, partially filling hollow center MWNTs. have diameter variation 10-60nm can be several μm long. phase crystal orientation relative to long tube axis probed by Transmission Electron Microscopy. remanent magnetization states MFM imaging. show shape...
The magnetization dynamics of individual Fe-filled multiwall carbon-nanotubes (FeCNT), grown by chemical vapor deposition, are investigated microresonator ferromagnetic resonance (FMR) and Brillouin light scattering (BLS) microscopy corroborated micromagnetic simulations. Currently, only static magnetometry measurements available. They suggest that the FeCNTs consist a single-crystalline Fe nanowire throughout length. number structure FMR lines abrupt decay spin-wave transport seen in BLS...
We report on the magnetic properties of an individual, high-quality single-crystalline iron nanowire with diameter d=26 nm. The is embedded in a carbon nanotube which provides complete shielding against oxidation. Magnetization reversal associated domain wall formation where nucleation initiated by curling. observed fields up to 900 mT are much higher than reported previously and nearly reach shape anisotropy field nanowires.
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The influence of external magnetic fields on the bending vibration a one-side clamped iron filled carbon nanotube (CNT) has been analyzed theoretically and experimentally, with particular consideration given to changes in resonance frequency. model involves application modified Euler-Bernoulli-beam analyze zero field oscillatory behavior, as well magnetostatic approach used determine any distributions. experiments were conducted situ scanning electron microscope. measured moment nanowire at...
We performed magnetic force microscopy (MFM) measurements in external fields parallel to the sample plane qualitatively study their effect on magnetization of different kinds MFM probes. As a test structure we used an array rectangular ferromagnetic thin film elements aligned with field direction. images were taken while was increased stepwise monitor onset tilt probe magnetization. Three probes investigated: conventional pyramidal coated 40 nm CoCrTa, high aspect ratio probe, and based iron...
We present results on the application of an iron filled carbon nanotube (Fe-CNT) as a probe for magnetic force microscopy (MFM) in external field. If field is applied parallel to sample surface, conventional ferromagnetically coated MFM probes often have disadvantage that magnetization coating turns towards direction Then it difficult distinguish effect from those probe. The Fe-CNT has large shape anisotropy due high aspect ratio enclosed nanowire. Thanks this stays mainly oriented along...
Copper matrix composite thin films reinforced with multiwall carbon nanotubes (CNT-Cu-MC) have been processed by electroplating on conducting or insulating underlayers oxidized (100)Si substrates using iron catalyst particles. The were grown thermal plasma enhanced catalytic CVD process. Enhanced interfacial strength to copper was achieved after covering the CNTs atomic layer deposition (PEALD) of a Ta-N Ta-N/Zr-O interlayer. For plating conventional electrolyte additives (Ethone) applied....
We have characterized a new Magnetic Force Microscopy (MFM) probe based on an iron filled carbon nanotube (FeCNT) using MFM imaging permalloy (Py) disks saturated in high magnetic field perpendicular to the disk plane. The experimental data are accurately modeled by describing FeCNT as having single monopole at its tip whose effective charge is determined diameter of wire enclosed and saturation magnetization 4 \pi M_s ~ 2.2 x 10^4 G. A enables quantitative measurements gradient close sample...
Microacoustic wave devices are essential components in the RF electronics and MEMS industry with increasing impact various sensing actuation applications. Reliable smart operation of acoustic at low costs would cause a crucial advancement. Herein, we present enablement temperature mechanical capabilities Rayleigh-mode standing surface (sSAW) chip device by harnessing an shear plate mode using same set electrodes. Most importantly, this is excited switching polarity sSAW transducer electrodes...